/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:20:04,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:20:04,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:20:04,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:20:04,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:20:04,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:20:04,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:20:04,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:20:04,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:20:04,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:20:04,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:20:04,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:20:04,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:20:04,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:20:04,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:20:04,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:20:04,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:20:04,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:20:04,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:20:04,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:20:04,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:20:04,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:20:04,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:20:04,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:20:04,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:20:04,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:20:04,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:20:04,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:20:04,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:20:04,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:20:04,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:20:04,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:20:04,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:20:04,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:20:04,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:20:04,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:20:04,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:20:04,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:20:04,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:20:04,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:20:04,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:20:04,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:20:04,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:20:04,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:20:04,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:20:04,200 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:20:04,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:20:04,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:20:04,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:20:04,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:20:04,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:20:04,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:20:04,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:20:04,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:20:04,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:20:04,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:20:04,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:20:04,204 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:20:04,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:20:04,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:20:04,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:20:04,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:20:04,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:20:04,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:20:04,205 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:20:04,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:20:04,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:20:04,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:20:04,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:20:04,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:20:04,605 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:20:04,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2021-02-24 04:20:04,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb9b68035/d8e99e17d098410791cd17baa2f99955/FLAG9988fc5d5 [2021-02-24 04:20:05,376 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:20:05,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2021-02-24 04:20:05,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb9b68035/d8e99e17d098410791cd17baa2f99955/FLAG9988fc5d5 [2021-02-24 04:20:05,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb9b68035/d8e99e17d098410791cd17baa2f99955 [2021-02-24 04:20:05,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:20:05,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:20:05,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:20:05,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:20:05,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:20:05,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:20:05" (1/1) ... [2021-02-24 04:20:05,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3d7f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:05, skipping insertion in model container [2021-02-24 04:20:05,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:20:05" (1/1) ... [2021-02-24 04:20:05,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:20:05,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:20:05,935 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_search-1.i[813,826] [2021-02-24 04:20:06,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:20:06,115 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:20:06,129 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_search-1.i[813,826] [2021-02-24 04:20:06,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:20:06,220 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:20:06,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06 WrapperNode [2021-02-24 04:20:06,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:20:06,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:20:06,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:20:06,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:20:06,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (1/1) ... [2021-02-24 04:20:06,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:20:06,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:20:06,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:20:06,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:20:06,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (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 [2021-02-24 04:20:06,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:20:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:20:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:20:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:20:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-24 04:20:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-24 04:20:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-24 04:20:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-24 04:20:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-24 04:20:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2021-02-24 04:20:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-02-24 04:20:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:20:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:20:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:20:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:20:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:20:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:20:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:20:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:20:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-24 04:20:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-24 04:20:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-24 04:20:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-24 04:20:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-24 04:20:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-24 04:20:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-24 04:20:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-24 04:20:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-24 04:20:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-24 04:20:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-24 04:20:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-24 04:20:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-24 04:20:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-24 04:20:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-24 04:20:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-24 04:20:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-24 04:20:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-24 04:20:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-24 04:20:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-24 04:20:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-24 04:20:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-24 04:20:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-24 04:20:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-24 04:20:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-24 04:20:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-24 04:20:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-24 04:20:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-24 04:20:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-24 04:20:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-24 04:20:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-24 04:20:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-24 04:20:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-24 04:20:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-24 04:20:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-24 04:20:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-24 04:20:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-24 04:20:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:20:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-24 04:20:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-24 04:20:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 04:20:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-24 04:20:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-24 04:20:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-24 04:20:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-24 04:20:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-24 04:20:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-24 04:20:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-24 04:20:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:20:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-24 04:20:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-24 04:20:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-24 04:20:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-24 04:20:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-24 04:20:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-24 04:20:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-24 04:20:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-24 04:20:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-24 04:20:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-24 04:20:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-24 04:20:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-24 04:20:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-24 04:20:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-24 04:20:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-24 04:20:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-24 04:20:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-24 04:20:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-24 04:20:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-24 04:20:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-24 04:20:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-24 04:20:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-24 04:20:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-24 04:20:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-24 04:20:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-02-24 04:20:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:20:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:20:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:20:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:20:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:20:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:20:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:20:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:20:07,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:20:07,226 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:20:07,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:20:07 BoogieIcfgContainer [2021-02-24 04:20:07,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:20:07,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:20:07,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:20:07,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:20:07,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:20:05" (1/3) ... [2021-02-24 04:20:07,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e3d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:20:07, skipping insertion in model container [2021-02-24 04:20:07,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:20:06" (2/3) ... [2021-02-24 04:20:07,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e3d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:20:07, skipping insertion in model container [2021-02-24 04:20:07,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:20:07" (3/3) ... [2021-02-24 04:20:07,256 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2021-02-24 04:20:07,264 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:20:07,270 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:20:07,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:20:07,327 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:20:07,327 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:20:07,327 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:20:07,328 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:20:07,328 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:20:07,328 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:20:07,328 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:20:07,328 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:20:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2021-02-24 04:20:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-24 04:20:07,369 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:07,370 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:07,370 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:07,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1236516545, now seen corresponding path program 1 times [2021-02-24 04:20:07,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:07,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292593668] [2021-02-24 04:20:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:07,503 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:07,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:07,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:07,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:07,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:07,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:07,918 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 04:20:07,920 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 04:20:07,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:07,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:07,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:07,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:08,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:08,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-24 04:20:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:08,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:08,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-24 04:20:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:08,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:08,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-24 04:20:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:08,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:08,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:08,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:08,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-02-24 04:20:08,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292593668] [2021-02-24 04:20:08,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:08,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:20:08,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085113813] [2021-02-24 04:20:08,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:20:08,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:20:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:20:08,108 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 9 states. [2021-02-24 04:20:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:08,899 INFO L93 Difference]: Finished difference Result 192 states and 230 transitions. [2021-02-24 04:20:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 04:20:08,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2021-02-24 04:20:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:08,912 INFO L225 Difference]: With dead ends: 192 [2021-02-24 04:20:08,912 INFO L226 Difference]: Without dead ends: 96 [2021-02-24 04:20:08,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:20:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-24 04:20:08,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2021-02-24 04:20:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-24 04:20:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-02-24 04:20:08,978 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 86 [2021-02-24 04:20:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:08,979 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-02-24 04:20:08,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:20:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-02-24 04:20:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-24 04:20:08,984 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:08,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:08,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:20:08,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1097503254, now seen corresponding path program 1 times [2021-02-24 04:20:08,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:08,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23491304] [2021-02-24 04:20:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:08,991 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:09,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,175 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 04:20:09,176 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 04:20:09,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:09,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:09,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:09,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:09,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:20:09,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:09,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-02-24 04:20:09,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23491304] [2021-02-24 04:20:09,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:09,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 04:20:09,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746207672] [2021-02-24 04:20:09,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 04:20:09,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:09,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 04:20:09,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:20:09,301 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2021-02-24 04:20:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:10,044 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2021-02-24 04:20:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:20:10,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2021-02-24 04:20:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:10,051 INFO L225 Difference]: With dead ends: 117 [2021-02-24 04:20:10,051 INFO L226 Difference]: Without dead ends: 94 [2021-02-24 04:20:10,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:20:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-24 04:20:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2021-02-24 04:20:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 04:20:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-02-24 04:20:10,075 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 93 [2021-02-24 04:20:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:10,075 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-02-24 04:20:10,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 04:20:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-02-24 04:20:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-24 04:20:10,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:10,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:10,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:20:10,078 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1922674771, now seen corresponding path program 1 times [2021-02-24 04:20:10,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:10,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484321232] [2021-02-24 04:20:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:10,088 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:20:10,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:10,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:10,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:10,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:10,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:10,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:10,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:10,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:20:10,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-24 04:20:10,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:20:10,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-24 04:20:10,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:10,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-24 04:20:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484321232] [2021-02-24 04:20:10,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:10,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:20:10,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570660500] [2021-02-24 04:20:10,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:20:10,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:10,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:20:10,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:20:10,598 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 14 states. [2021-02-24 04:20:11,477 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 04:20:11,622 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-02-24 04:20:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:11,986 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-02-24 04:20:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 04:20:11,993 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 95 [2021-02-24 04:20:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:11,996 INFO L225 Difference]: With dead ends: 104 [2021-02-24 04:20:11,996 INFO L226 Difference]: Without dead ends: 91 [2021-02-24 04:20:11,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2021-02-24 04:20:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-24 04:20:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-02-24 04:20:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 04:20:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-02-24 04:20:12,021 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 95 [2021-02-24 04:20:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:12,022 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-02-24 04:20:12,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:20:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-02-24 04:20:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-02-24 04:20:12,024 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:12,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:12,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:20:12,025 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash -150000509, now seen corresponding path program 1 times [2021-02-24 04:20:12,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:12,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414671158] [2021-02-24 04:20:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:12,030 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:12,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:12,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,201 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 04:20:12,202 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 04:20:12,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:12,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:12,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:12,283 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 04:20:12,285 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 04:20:12,300 WARN L141 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-02-24 04:20:12,304 WARN L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-02-24 04:20:12,323 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-24 04:20:12,323 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-24 04:20:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:12,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:12,405 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-24 04:20:12,408 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-24 04:20:12,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:12,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:12,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:20:12,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:12,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-24 04:20:12,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414671158] [2021-02-24 04:20:12,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:12,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-24 04:20:12,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029430887] [2021-02-24 04:20:12,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 04:20:12,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:12,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 04:20:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:20:12,563 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 18 states. [2021-02-24 04:20:13,805 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-02-24 04:20:14,651 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-02-24 04:20:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:14,725 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-02-24 04:20:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-24 04:20:14,725 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2021-02-24 04:20:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:14,727 INFO L225 Difference]: With dead ends: 142 [2021-02-24 04:20:14,728 INFO L226 Difference]: Without dead ends: 119 [2021-02-24 04:20:14,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 04:20:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-24 04:20:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 91. [2021-02-24 04:20:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-24 04:20:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-02-24 04:20:14,762 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 103 [2021-02-24 04:20:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:14,763 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-02-24 04:20:14,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 04:20:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-02-24 04:20:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-02-24 04:20:14,765 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:14,765 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:14,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:20:14,766 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1905603578, now seen corresponding path program 1 times [2021-02-24 04:20:14,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:14,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794985276] [2021-02-24 04:20:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:14,771 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:14,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:14,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:14,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:20:14,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:20:14,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:14,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:20:14,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:14,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:14,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:14,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:14,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:14,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:15,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:15,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:15,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:15,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:15,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:15,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:15,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:15,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:15,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:20:15,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:20:15,133 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-24 04:20:15,133 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-24 04:20:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:15,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:20:15,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:20:15,247 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-24 04:20:15,247 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-24 04:20:15,278 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-24 04:20:15,279 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-24 04:20:15,313 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-24 04:20:15,314 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-24 04:20:15,315 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:20:15,316 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:20:15,356 WARN L141 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-02-24 04:20:15,357 WARN L147 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size 48 [2021-02-24 04:20:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:15,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:15,430 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:20:15,431 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:20:15,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:20:15,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:20:15,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:15,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:20:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 04:20:15,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794985276] [2021-02-24 04:20:15,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:15,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-24 04:20:15,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786725839] [2021-02-24 04:20:15,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 04:20:15,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:15,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 04:20:15,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2021-02-24 04:20:15,660 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 26 states. [2021-02-24 04:20:17,545 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-02-24 04:20:17,982 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-02-24 04:20:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:18,402 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-02-24 04:20:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 04:20:18,402 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2021-02-24 04:20:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:18,404 INFO L225 Difference]: With dead ends: 123 [2021-02-24 04:20:18,404 INFO L226 Difference]: Without dead ends: 110 [2021-02-24 04:20:18,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2021-02-24 04:20:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-24 04:20:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2021-02-24 04:20:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-02-24 04:20:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-02-24 04:20:18,432 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 105 [2021-02-24 04:20:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:18,433 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-02-24 04:20:18,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 04:20:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-02-24 04:20:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-24 04:20:18,434 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:18,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:18,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:20:18,435 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:18,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:18,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1705131996, now seen corresponding path program 2 times [2021-02-24 04:20:18,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:18,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414283525] [2021-02-24 04:20:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:18,441 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:18,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:18,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:18,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:18,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:20:18,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:20:18,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:18,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:18,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:18,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:18,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:18,624 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 04:20:18,624 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 04:20:18,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:18,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:18,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:18,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:18,709 WARN L141 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-02-24 04:20:18,710 WARN L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-02-24 04:20:18,728 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-24 04:20:18,728 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-24 04:20:18,750 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-24 04:20:18,751 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-24 04:20:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:18,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:20:18,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:20:18,854 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-24 04:20:18,856 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-24 04:20:18,887 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-24 04:20:18,888 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-24 04:20:18,920 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-24 04:20:18,921 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-24 04:20:18,922 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:20:18,923 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:20:18,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:18,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 04:20:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:19,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:19,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:19,040 WARN L141 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-02-24 04:20:19,041 WARN L147 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size 20 [2021-02-24 04:20:19,091 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-02-24 04:20:19,093 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size 20 [2021-02-24 04:20:19,126 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size [2021-02-24 04:20:19,128 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size 37 [2021-02-24 04:20:19,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:19,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:20:19,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:19,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:20:19,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:19,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:20:19,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:19,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:20:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-24 04:20:19,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414283525] [2021-02-24 04:20:19,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:19,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-24 04:20:19,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034942381] [2021-02-24 04:20:19,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-24 04:20:19,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-24 04:20:19,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:20:19,418 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 27 states. [2021-02-24 04:20:21,534 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-02-24 04:20:22,582 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-02-24 04:20:22,819 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-02-24 04:20:23,007 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-24 04:20:23,174 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-02-24 04:20:23,361 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-02-24 04:20:23,637 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-02-24 04:20:23,789 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-02-24 04:20:23,935 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-02-24 04:20:24,120 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-02-24 04:20:24,473 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-24 04:20:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:24,599 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2021-02-24 04:20:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-24 04:20:24,599 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 113 [2021-02-24 04:20:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:24,602 INFO L225 Difference]: With dead ends: 164 [2021-02-24 04:20:24,602 INFO L226 Difference]: Without dead ends: 141 [2021-02-24 04:20:24,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=591, Invalid=3569, Unknown=0, NotChecked=0, Total=4160 [2021-02-24 04:20:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-24 04:20:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2021-02-24 04:20:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-24 04:20:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2021-02-24 04:20:24,635 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 113 [2021-02-24 04:20:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:24,636 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2021-02-24 04:20:24,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-24 04:20:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2021-02-24 04:20:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-24 04:20:24,637 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:24,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:24,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:20:24,638 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:24,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1534694113, now seen corresponding path program 2 times [2021-02-24 04:20:24,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:24,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650290812] [2021-02-24 04:20:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:24,643 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:24,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:20:24,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:20:24,756 WARN L141 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size [2021-02-24 04:20:24,756 WARN L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-02-24 04:20:24,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:24,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:24,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:24,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:24,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:24,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:24,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:24,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:20:24,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:20:24,922 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-24 04:20:24,922 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-24 04:20:24,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:24,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:20:24,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:24,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:20:25,013 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-02-24 04:20:25,013 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size 23 [2021-02-24 04:20:25,041 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-02-24 04:20:25,041 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-02-24 04:20:25,076 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-02-24 04:20:25,077 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-02-24 04:20:25,079 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size [2021-02-24 04:20:25,080 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size 38 [2021-02-24 04:20:25,120 WARN L141 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-02-24 04:20:25,121 WARN L147 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size 53 [2021-02-24 04:20:25,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:25,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:25,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:20:25,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:25,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:20:25,266 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-02-24 04:20:25,266 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size 24 [2021-02-24 04:20:25,303 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-02-24 04:20:25,304 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-02-24 04:20:25,347 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-02-24 04:20:25,347 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-02-24 04:20:25,348 WARN L141 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size [2021-02-24 04:20:25,349 WARN L147 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size 49 [2021-02-24 04:20:25,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:25,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-02-24 04:20:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:25,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:25,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:25,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:25,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:25,547 WARN L141 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size [2021-02-24 04:20:25,548 WARN L147 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size 23 [2021-02-24 04:20:25,612 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-02-24 04:20:25,613 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size 30 [2021-02-24 04:20:25,705 WARN L141 QuantifierPusher]: treesize reduction 13, result has 72.9 percent of original size [2021-02-24 04:20:25,706 WARN L147 QuantifierPusher]: treesize reduction 13, result has 72.9 percent of original size 35 [2021-02-24 04:20:25,782 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-02-24 04:20:25,783 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-02-24 04:20:25,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:25,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:20:25,944 WARN L141 QuantifierPusher]: treesize reduction 27, result has 85.8 percent of original size [2021-02-24 04:20:25,947 WARN L147 QuantifierPusher]: treesize reduction 27, result has 85.8 percent of original size 163 [2021-02-24 04:20:26,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:26,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 04:20:26,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:26,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-02-24 04:20:26,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:26,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-02-24 04:20:26,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:26,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-02-24 04:20:26,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:26,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-02-24 04:20:26,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:26,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-02-24 04:20:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 04:20:26,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650290812] [2021-02-24 04:20:26,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:26,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-02-24 04:20:26,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131860927] [2021-02-24 04:20:26,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-24 04:20:26,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:26,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-24 04:20:26,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1248, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 04:20:26,922 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 37 states. [2021-02-24 04:20:28,188 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-02-24 04:20:29,746 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-02-24 04:20:29,954 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-02-24 04:20:30,169 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2021-02-24 04:20:30,426 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2021-02-24 04:20:30,689 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-02-24 04:20:30,960 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2021-02-24 04:20:31,234 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-02-24 04:20:31,501 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-02-24 04:20:31,733 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2021-02-24 04:20:31,963 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2021-02-24 04:20:32,224 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2021-02-24 04:20:32,466 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-02-24 04:20:32,769 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2021-02-24 04:20:33,132 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-02-24 04:20:33,405 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2021-02-24 04:20:33,664 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2021-02-24 04:20:33,989 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-02-24 04:20:34,294 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2021-02-24 04:20:34,618 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-02-24 04:20:34,879 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2021-02-24 04:20:35,199 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-02-24 04:20:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:35,450 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2021-02-24 04:20:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-24 04:20:35,451 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 115 [2021-02-24 04:20:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:35,453 INFO L225 Difference]: With dead ends: 145 [2021-02-24 04:20:35,454 INFO L226 Difference]: Without dead ends: 132 [2021-02-24 04:20:35,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=708, Invalid=5144, Unknown=0, NotChecked=0, Total=5852 [2021-02-24 04:20:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-24 04:20:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2021-02-24 04:20:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-24 04:20:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2021-02-24 04:20:35,494 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 115 [2021-02-24 04:20:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:35,495 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2021-02-24 04:20:35,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-02-24 04:20:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2021-02-24 04:20:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-02-24 04:20:35,497 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:35,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:35,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:20:35,497 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1254377483, now seen corresponding path program 3 times [2021-02-24 04:20:35,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:35,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011117717] [2021-02-24 04:20:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:35,501 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:35,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:35,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:20:35,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:20:35,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 04:20:35,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:20:35,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:20:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:35,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:35,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:20:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:35,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:35,713 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 04:20:35,714 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 04:20:35,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:35,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:20:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:20:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:35,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:20:35,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:20:35,798 WARN L141 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-02-24 04:20:35,799 WARN L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-02-24 04:20:35,818 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-24 04:20:35,818 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-24 04:20:35,839 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-24 04:20:35,839 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-24 04:20:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:20:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:35,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:20:35,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:35,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:20:35,939 WARN L141 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size [2021-02-24 04:20:35,940 WARN L147 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size 27 [2021-02-24 04:20:35,972 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:20:35,973 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:20:36,012 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:20:36,013 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:20:36,014 WARN L141 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size [2021-02-24 04:20:36,015 WARN L147 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size 42 [2021-02-24 04:20:36,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-24 04:20:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 04:20:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:36,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:20:36,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:20:36,199 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-24 04:20:36,199 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-24 04:20:36,233 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-02-24 04:20:36,234 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size 31 [2021-02-24 04:20:36,273 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-02-24 04:20:36,274 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size 31 [2021-02-24 04:20:36,275 WARN L141 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size [2021-02-24 04:20:36,275 WARN L147 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size 41 [2021-02-24 04:20:36,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-24 04:20:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-24 04:20:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:20:36,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:20:36,412 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:20:36,415 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:20:36,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:20:36,488 WARN L141 QuantifierPusher]: treesize reduction 50, result has 36.7 percent of original size [2021-02-24 04:20:36,489 WARN L147 QuantifierPusher]: treesize reduction 50, result has 36.7 percent of original size 29 [2021-02-24 04:20:36,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 04:20:36,607 WARN L141 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-02-24 04:20:36,608 WARN L147 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size 45 [2021-02-24 04:20:36,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 04:20:36,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 04:20:36,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 04:20:36,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:20:36,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 04:20:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 04:20:37,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011117717] [2021-02-24 04:20:37,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:20:37,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-02-24 04:20:37,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25876393] [2021-02-24 04:20:37,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-24 04:20:37,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:20:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-24 04:20:37,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 04:20:37,007 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand 36 states. [2021-02-24 04:20:38,790 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-02-24 04:20:39,615 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-02-24 04:20:40,541 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-02-24 04:20:40,967 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-02-24 04:20:41,201 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-02-24 04:20:41,531 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-02-24 04:20:41,757 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-02-24 04:20:41,973 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-02-24 04:20:42,212 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-02-24 04:20:42,534 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-02-24 04:20:42,764 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-02-24 04:20:42,979 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2021-02-24 04:20:43,212 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-02-24 04:20:43,538 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-02-24 04:20:43,762 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-02-24 04:20:43,963 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-02-24 04:20:44,169 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-24 04:20:44,618 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-24 04:20:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:20:44,766 INFO L93 Difference]: Finished difference Result 177 states and 183 transitions. [2021-02-24 04:20:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-24 04:20:44,767 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 123 [2021-02-24 04:20:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:20:44,768 INFO L225 Difference]: With dead ends: 177 [2021-02-24 04:20:44,768 INFO L226 Difference]: Without dead ends: 154 [2021-02-24 04:20:44,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=845, Invalid=5635, Unknown=0, NotChecked=0, Total=6480 [2021-02-24 04:20:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-02-24 04:20:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2021-02-24 04:20:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-24 04:20:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-02-24 04:20:44,805 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 123 [2021-02-24 04:20:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:20:44,805 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-02-24 04:20:44,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-24 04:20:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-02-24 04:20:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-24 04:20:44,807 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:20:44,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:20:44,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:20:44,807 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:20:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:20:44,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1940013816, now seen corresponding path program 3 times [2021-02-24 04:20:44,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:20:44,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365066864] [2021-02-24 04:20:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:20:44,811 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:20:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:20:44,847 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:20:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:20:44,876 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:20:44,928 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:20:44,928 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:20:44,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:20:44,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:20:44 BoogieIcfgContainer [2021-02-24 04:20:44,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:20:44,952 INFO L168 Benchmark]: Toolchain (without parser) took 39252.04 ms. Allocated memory was 152.0 MB in the beginning and 367.0 MB in the end (delta: 215.0 MB). Free memory was 127.1 MB in the beginning and 257.2 MB in the end (delta: -130.1 MB). Peak memory consumption was 85.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:44,952 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:20:44,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.70 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 103.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:44,953 INFO L168 Benchmark]: Boogie Preprocessor took 106.86 ms. Allocated memory is still 152.0 MB. Free memory was 103.8 MB in the beginning and 134.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:44,953 INFO L168 Benchmark]: RCFGBuilder took 900.58 ms. Allocated memory is still 152.0 MB. Free memory was 134.5 MB in the beginning and 87.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:44,953 INFO L168 Benchmark]: TraceAbstraction took 37716.78 ms. Allocated memory was 152.0 MB in the beginning and 367.0 MB in the end (delta: 215.0 MB). Free memory was 87.1 MB in the beginning and 257.2 MB in the end (delta: -170.1 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:20:44,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 506.70 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 103.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.86 ms. Allocated memory is still 152.0 MB. Free memory was 103.8 MB in the beginning and 134.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 900.58 ms. Allocated memory is still 152.0 MB. Free memory was 134.5 MB in the beginning and 87.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 37716.78 ms. Allocated memory was 152.0 MB in the beginning and 367.0 MB in the end (delta: 215.0 MB). Free memory was 87.1 MB in the beginning and 257.2 MB in the end (delta: -170.1 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L533] mlist *head; [L554] int i; [L555] mlist *mylist, *temp; [L556] CALL insert_list(mylist,2) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) [L550] head = l [L551] return 0; [L556] RET insert_list(mylist,2) [L557] CALL insert_list(mylist,5) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L557] RET insert_list(mylist,5) [L558] CALL insert_list(mylist,1) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L558] RET insert_list(mylist,1) [L559] CALL insert_list(mylist,3) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L559] RET insert_list(mylist,3) [L560] CALL, EXPR search_list(head,2) [L535] l = head [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] EXPR temp->key [L561] CALL __VERIFIER_assert(temp->key==1) [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.6s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 2258 SDslu, 2657 SDs, 0 SdLazy, 9356 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3781 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 150 StatesRemovedByMinimization, 8 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...