/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:27:18,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:27:18,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:27:18,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:27:18,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:27:18,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:27:18,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:27:18,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:27:18,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:27:18,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:27:18,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:27:18,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:27:18,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:27:18,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:27:18,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:27:18,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:27:18,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:27:18,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:27:18,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:27:18,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:27:18,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:27:18,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:27:18,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:27:18,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:27:18,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:27:18,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:27:18,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:27:18,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:27:18,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:27:18,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:27:18,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:27:18,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:27:18,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:27:18,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:27:18,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:27:18,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:27:18,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:27:18,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:27:18,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:27:18,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:27:18,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:27:18,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:27:18,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:27:18,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:27:18,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:27:18,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:27:18,239 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:27:18,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:27:18,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:27:18,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:27:18,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:27:18,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:27:18,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:27:18,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:27:18,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:27:18,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:27:18,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:27:18,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:27:18,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:27:18,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:27:18,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:27:18,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:27:18,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:27:18,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:27:18,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:27:18,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:27:18,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:27:18,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:27:18,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:27:18,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:27:18,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:27:18,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:27:18,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:27:18,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:27:18,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:27:18,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:27:18,663 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:27:18,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-11-06 22:27:18,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e6ef55d/5ccb86c732ce4121b543ecedffd451a7/FLAG868cfb533 [2020-11-06 22:27:19,304 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:27:19,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2020-11-06 22:27:19,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e6ef55d/5ccb86c732ce4121b543ecedffd451a7/FLAG868cfb533 [2020-11-06 22:27:19,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e6ef55d/5ccb86c732ce4121b543ecedffd451a7 [2020-11-06 22:27:19,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:27:19,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:27:19,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:27:19,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:27:19,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:27:19,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b57b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:19, skipping insertion in model container [2020-11-06 22:27:19,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:19" (1/1) ... [2020-11-06 22:27:19,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:27:19,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:27:20,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:27:20,043 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:27:20,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:27:20,250 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:27:20,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20 WrapperNode [2020-11-06 22:27:20,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:27:20,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:27:20,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:27:20,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:27:20,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (1/1) ... [2020-11-06 22:27:20,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:27:20,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:27:20,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:27:20,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:27:20,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (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 [2020-11-06 22:27:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:27:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:27:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:27:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:27:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-06 22:27:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-06 22:27:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-06 22:27:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-06 22:27:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-06 22:27:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-11-06 22:27:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-11-06 22:27:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:27:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:27:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:27:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:27:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:27:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:27:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-06 22:27:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-06 22:27:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-06 22:27:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-06 22:27:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-06 22:27:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-06 22:27:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-06 22:27:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-06 22:27:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-06 22:27:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-06 22:27:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-06 22:27:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-06 22:27:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-06 22:27:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-06 22:27:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-06 22:27:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-06 22:27:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-06 22:27:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-06 22:27:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-06 22:27:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-06 22:27:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-06 22:27:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-06 22:27:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-06 22:27:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-06 22:27:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-06 22:27:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-06 22:27:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-06 22:27:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-06 22:27:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-06 22:27:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-06 22:27:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-06 22:27:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-06 22:27:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-06 22:27:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-06 22:27:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-06 22:27:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-06 22:27:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-06 22:27:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-06 22:27:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-06 22:27:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:27:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-06 22:27:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-06 22:27:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 22:27:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-06 22:27:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-06 22:27:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-06 22:27:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-06 22:27:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-06 22:27:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-06 22:27:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-06 22:27:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:27:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-06 22:27:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-06 22:27:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-06 22:27:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-06 22:27:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-06 22:27:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-06 22:27:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-06 22:27:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-06 22:27:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-06 22:27:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-06 22:27:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-06 22:27:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-06 22:27:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-06 22:27:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-06 22:27:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-06 22:27:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-06 22:27:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-06 22:27:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-06 22:27:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-06 22:27:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-06 22:27:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-11-06 22:27:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:27:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:27:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-11-06 22:27:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:27:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:27:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:27:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:27:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:27:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:27:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:27:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:27:21,138 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:27:21,138 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:27:21,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:21 BoogieIcfgContainer [2020-11-06 22:27:21,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:27:21,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:27:21,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:27:21,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:27:21,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:19" (1/3) ... [2020-11-06 22:27:21,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bccd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:21, skipping insertion in model container [2020-11-06 22:27:21,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:20" (2/3) ... [2020-11-06 22:27:21,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bccd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:21, skipping insertion in model container [2020-11-06 22:27:21,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:21" (3/3) ... [2020-11-06 22:27:21,152 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-11-06 22:27:21,233 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:27:21,236 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:27:21,262 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:27:21,298 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:27:21,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:27:21,298 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:27:21,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:27:21,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:27:21,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:27:21,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:27:21,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:27:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-11-06 22:27:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-06 22:27:21,322 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:21,322 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:27:21,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:21,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:21,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1132079083, now seen corresponding path program 1 times [2020-11-06 22:27:21,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:21,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172445937] [2020-11-06 22:27:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:27:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:27:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-06 22:27:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-06 22:27:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:21,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-06 22:27:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-06 22:27:22,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172445937] [2020-11-06 22:27:22,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536194499] [2020-11-06 22:27:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:22,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-06 22:27:22,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:27:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-06 22:27:22,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:27:22,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2020-11-06 22:27:22,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021438364] [2020-11-06 22:27:22,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-06 22:27:22,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:22,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-06 22:27:22,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:27:22,475 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2020-11-06 22:27:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:22,498 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-11-06 22:27:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-06 22:27:22,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 47 [2020-11-06 22:27:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:22,509 INFO L225 Difference]: With dead ends: 65 [2020-11-06 22:27:22,509 INFO L226 Difference]: Without dead ends: 35 [2020-11-06 22:27:22,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:27:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-06 22:27:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-06 22:27:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-06 22:27:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-11-06 22:27:22,555 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 47 [2020-11-06 22:27:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:22,557 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-11-06 22:27:22,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-06 22:27:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-11-06 22:27:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-06 22:27:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:22,560 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:27:22,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-06 22:27:22,774 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:22,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1798844206, now seen corresponding path program 1 times [2020-11-06 22:27:22,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:22,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614752277] [2020-11-06 22:27:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:27:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:27:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-06 22:27:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:23,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-06 22:27:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-06 22:27:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-06 22:27:23,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614752277] [2020-11-06 22:27:23,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255211567] [2020-11-06 22:27:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:23,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-06 22:27:23,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:27:23,590 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-06 22:27:23,591 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 7 [2020-11-06 22:27:23,592 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:23,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:23,599 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:23,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:7 [2020-11-06 22:27:23,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:27:23,727 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:27:23,856 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-06 22:27:23,858 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:23,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:23,860 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:23,860 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:1 [2020-11-06 22:27:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-06 22:27:23,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:27:23,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2020-11-06 22:27:23,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414316536] [2020-11-06 22:27:23,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:27:23,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:23,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:27:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:27:23,870 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 10 states. [2020-11-06 22:27:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:24,180 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-11-06 22:27:24,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:27:24,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-11-06 22:27:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:24,185 INFO L225 Difference]: With dead ends: 55 [2020-11-06 22:27:24,185 INFO L226 Difference]: Without dead ends: 44 [2020-11-06 22:27:24,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-11-06 22:27:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-06 22:27:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-11-06 22:27:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-06 22:27:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-11-06 22:27:24,196 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 49 [2020-11-06 22:27:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:24,196 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-11-06 22:27:24,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:27:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-11-06 22:27:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-06 22:27:24,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:24,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:27:24,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:24,412 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:24,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2057009644, now seen corresponding path program 1 times [2020-11-06 22:27:24,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:24,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437919433] [2020-11-06 22:27:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:27:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:27:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-06 22:27:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-06 22:27:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-06 22:27:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-06 22:27:24,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437919433] [2020-11-06 22:27:24,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277628656] [2020-11-06 22:27:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:24,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-06 22:27:24,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:27:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-06 22:27:24,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:27:24,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2020-11-06 22:27:24,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215979963] [2020-11-06 22:27:24,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:27:24,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:27:24,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:27:24,883 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 5 states. [2020-11-06 22:27:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:25,002 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2020-11-06 22:27:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:27:25,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-06 22:27:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:25,004 INFO L225 Difference]: With dead ends: 74 [2020-11-06 22:27:25,004 INFO L226 Difference]: Without dead ends: 43 [2020-11-06 22:27:25,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:27:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-06 22:27:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-06 22:27:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-06 22:27:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-11-06 22:27:25,015 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 49 [2020-11-06 22:27:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:25,015 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-11-06 22:27:25,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:27:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-11-06 22:27:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-06 22:27:25,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:25,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-11-06 22:27:25,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:25,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:25,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1633362922, now seen corresponding path program 1 times [2020-11-06 22:27:25,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:25,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997341206] [2020-11-06 22:27:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:27:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:27:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-06 22:27:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-06 22:27:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-06 22:27:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-06 22:27:25,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997341206] [2020-11-06 22:27:25,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:25,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:27:25,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964187887] [2020-11-06 22:27:25,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:27:25,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:27:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:27:25,428 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 9 states. [2020-11-06 22:27:25,931 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-11-06 22:27:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:26,021 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-11-06 22:27:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-06 22:27:26,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-11-06 22:27:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:26,025 INFO L225 Difference]: With dead ends: 75 [2020-11-06 22:27:26,026 INFO L226 Difference]: Without dead ends: 43 [2020-11-06 22:27:26,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:27:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-06 22:27:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-06 22:27:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-06 22:27:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-06 22:27:26,037 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 49 [2020-11-06 22:27:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:26,041 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-06 22:27:26,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:27:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-06 22:27:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-06 22:27:26,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:26,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-11-06 22:27:26,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:27:26,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1677512552, now seen corresponding path program 1 times [2020-11-06 22:27:26,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:26,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850040641] [2020-11-06 22:27:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:27:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:27:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-06 22:27:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-06 22:27:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-06 22:27:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-06 22:27:26,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850040641] [2020-11-06 22:27:26,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459211059] [2020-11-06 22:27:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:26,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 63 conjunts are in the unsatisfiable core [2020-11-06 22:27:26,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:27:26,902 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-06 22:27:26,902 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:26,907 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:26,908 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:26,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-06 22:27:26,962 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-06 22:27:26,963 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 7 [2020-11-06 22:27:26,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:26,968 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:26,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:26,969 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:13 [2020-11-06 22:27:27,207 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-06 22:27:27,208 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:27,221 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:27,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-06 22:27:27,231 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:27,242 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:27,243 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-06 22:27:27,244 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:46 [2020-11-06 22:27:29,136 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 30 [2020-11-06 22:27:30,418 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 30 [2020-11-06 22:27:30,445 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:30,445 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2020-11-06 22:27:30,446 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:30,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:27:30,465 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2020-11-06 22:27:30,466 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,477 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:30,478 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,479 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:58, output treesize:30 [2020-11-06 22:27:30,777 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2020-11-06 22:27:30,781 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:30,794 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-11-06 22:27:30,795 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:30,802 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,802 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:48, output treesize:7 [2020-11-06 22:27:30,808 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-06 22:27:30,809 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:27:30,811 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:27:30,811 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-06 22:27:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:27:30,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:27:30,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 33 [2020-11-06 22:27:30,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238694412] [2020-11-06 22:27:30,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-06 22:27:30,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:30,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-06 22:27:30,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=979, Unknown=1, NotChecked=0, Total=1056 [2020-11-06 22:27:30,931 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 33 states. [2020-11-06 22:27:32,713 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-11-06 22:27:36,871 WARN L194 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-11-06 22:27:38,871 WARN L194 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-11-06 22:27:40,882 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-06 22:27:45,436 WARN L194 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-11-06 22:27:45,720 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-06 22:27:45,879 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-06 22:27:46,094 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-11-06 22:27:46,415 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-11-06 22:27:46,812 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-11-06 22:27:47,002 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-06 22:27:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:47,113 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-11-06 22:27:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-06 22:27:47,113 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 52 [2020-11-06 22:27:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:47,116 INFO L225 Difference]: With dead ends: 62 [2020-11-06 22:27:47,116 INFO L226 Difference]: Without dead ends: 51 [2020-11-06 22:27:47,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=252, Invalid=2297, Unknown=1, NotChecked=0, Total=2550 [2020-11-06 22:27:47,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-06 22:27:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-06 22:27:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-06 22:27:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-11-06 22:27:47,128 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 52 [2020-11-06 22:27:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:47,129 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-11-06 22:27:47,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-06 22:27:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-11-06 22:27:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-06 22:27:47,130 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:47,135 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:27:47,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:27:47,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:47,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash 970297772, now seen corresponding path program 2 times [2020-11-06 22:27:47,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:47,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088114774] [2020-11-06 22:27:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:47,471 ERROR L253 erpolLogProxyWrapper]: Interpolant 12 not inductive [2020-11-06 22:27:47,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:27:47,472 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-06 22:27:47,476 INFO L168 Benchmark]: Toolchain (without parser) took 27873.25 ms. Allocated memory was 151.0 MB in the beginning and 266.3 MB in the end (delta: 115.3 MB). Free memory was 104.9 MB in the beginning and 184.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:47,476 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:27:47,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.71 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 121.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:47,478 INFO L168 Benchmark]: Boogie Preprocessor took 99.70 ms. Allocated memory is still 151.0 MB. Free memory was 121.7 MB in the beginning and 118.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:47,478 INFO L168 Benchmark]: RCFGBuilder took 786.83 ms. Allocated memory is still 151.0 MB. Free memory was 118.9 MB in the beginning and 77.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:47,479 INFO L168 Benchmark]: TraceAbstraction took 26330.86 ms. Allocated memory was 151.0 MB in the beginning and 266.3 MB in the end (delta: 115.3 MB). Free memory was 76.6 MB in the beginning and 184.8 MB in the end (delta: -108.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:47,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 642.71 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 121.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.70 ms. Allocated memory is still 151.0 MB. Free memory was 121.7 MB in the beginning and 118.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 786.83 ms. Allocated memory is still 151.0 MB. Free memory was 118.9 MB in the beginning and 77.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26330.86 ms. Allocated memory was 151.0 MB in the beginning and 266.3 MB in the end (delta: 115.3 MB). Free memory was 76.6 MB in the beginning and 184.8 MB in the end (delta: -108.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...