/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:04:06,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:06,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:06,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:04:06,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:04:06,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:04:06,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:04:06,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:04:06,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:04:06,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:04:06,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:04:06,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:04:06,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:04:06,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:04:06,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:04:06,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:04:06,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:04:06,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:04:06,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:04:06,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:04:06,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:04:06,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:04:06,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:04:06,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:04:06,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:04:06,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:04:06,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:04:06,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:04:06,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:04:06,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:04:06,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:04:06,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:04:06,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:04:06,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:04:06,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:04:06,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:04:06,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:04:06,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:04:06,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:04:06,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:04:06,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:04:06,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:04:06,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:06,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:06,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:06,286 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:06,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:06,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:06,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:06,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:06,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:06,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:06,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:06,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:06,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:06,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:06,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:06,290 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:06,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:06,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:06,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:06,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:06,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:06,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:06,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:06,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:06,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:06,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:06,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:06,735 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:06,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2021-02-23 23:04:06,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df09af93a/296ed6751bb1455cbc8f4c8aeab460ac/FLAGa6067c6e0 [2021-02-23 23:04:07,519 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:07,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2021-02-23 23:04:07,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df09af93a/296ed6751bb1455cbc8f4c8aeab460ac/FLAGa6067c6e0 [2021-02-23 23:04:07,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df09af93a/296ed6751bb1455cbc8f4c8aeab460ac [2021-02-23 23:04:07,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:07,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:07,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:07,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:07,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:07,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:07" (1/1) ... [2021-02-23 23:04:07,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8177f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:07, skipping insertion in model container [2021-02-23 23:04:07,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:07" (1/1) ... [2021-02-23 23:04:07,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:07,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:08,204 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i[23721,23734] [2021-02-23 23:04:08,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:08,225 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:08,305 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i[23721,23734] [2021-02-23 23:04:08,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:08,361 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:08,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08 WrapperNode [2021-02-23 23:04:08,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:08,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:08,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:08,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:08,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... [2021-02-23 23:04:08,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:08,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:08,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:08,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:08,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 23:04:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 23:04:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 23:04:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 23:04:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 23:04:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 23:04:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:04:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:04:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:04:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:04:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:04:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:04:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:04:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:04:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:04:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:04:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:04:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:04:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:04:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:04:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:04:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:04:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:04:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:04:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:04:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 23:04:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 23:04:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 23:04:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 23:04:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 23:04:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:04:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:04:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:04:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:04:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:04:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:04:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:04:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:04:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:04:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:04:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:04:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:04:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:04:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:04:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:04:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:04:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:04:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:04:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:04:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:04:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:04:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:04:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:04:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:04:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:04:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:04:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:04:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:04:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:04:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:04:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:04:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:04:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:04:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:04:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:04:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:04:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:04:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:04:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:04:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:04:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:04:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:04:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:04:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:04:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:04:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:04:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:04:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:04:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:04:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:04:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:04:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:04:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:04:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:04:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:04:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:04:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:04:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:04:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:04:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:04:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:04:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:04:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:04:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:04:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:04:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:04:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:04:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:04:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:04:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:04:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:04:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:04:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:04:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 23:04:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:04:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:04:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:04:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:09,003 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 23:04:09,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:09,180 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 23:04:09,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:09 BoogieIcfgContainer [2021-02-23 23:04:09,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:09,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:09,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:09,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:09,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:07" (1/3) ... [2021-02-23 23:04:09,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e81a7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:09, skipping insertion in model container [2021-02-23 23:04:09,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:08" (2/3) ... [2021-02-23 23:04:09,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e81a7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:09, skipping insertion in model container [2021-02-23 23:04:09,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:09" (3/3) ... [2021-02-23 23:04:09,196 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2021-02-23 23:04:09,205 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:09,211 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:09,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:09,261 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:09,261 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:09,262 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:09,262 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:09,262 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:09,262 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:09,262 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:09,262 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2021-02-23 23:04:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 23:04:09,292 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:09,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:09,293 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:09,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2031810677, now seen corresponding path program 1 times [2021-02-23 23:04:09,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:09,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620268313] [2021-02-23 23:04:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:09,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:09,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:09,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:09,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:09,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:09,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:09,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620268313] [2021-02-23 23:04:09,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:09,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:04:09,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150054409] [2021-02-23 23:04:09,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:04:09,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:09,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:04:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:04:09,700 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2021-02-23 23:04:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:10,025 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2021-02-23 23:04:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:04:10,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-02-23 23:04:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:10,038 INFO L225 Difference]: With dead ends: 143 [2021-02-23 23:04:10,038 INFO L226 Difference]: Without dead ends: 80 [2021-02-23 23:04:10,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:04:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-23 23:04:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-02-23 23:04:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-23 23:04:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2021-02-23 23:04:10,106 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 37 [2021-02-23 23:04:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:10,107 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2021-02-23 23:04:10,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:04:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2021-02-23 23:04:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 23:04:10,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:10,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:10,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:04:10,110 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:10,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:10,111 INFO L82 PathProgramCache]: Analyzing trace with hash -921830062, now seen corresponding path program 1 times [2021-02-23 23:04:10,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:10,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002776377] [2021-02-23 23:04:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:10,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:10,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:10,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:10,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:10,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:10,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002776377] [2021-02-23 23:04:10,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:10,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:04:10,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295005953] [2021-02-23 23:04:10,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:04:10,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:10,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:04:10,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:10,289 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 6 states. [2021-02-23 23:04:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:10,540 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2021-02-23 23:04:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:04:10,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2021-02-23 23:04:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:10,543 INFO L225 Difference]: With dead ends: 146 [2021-02-23 23:04:10,543 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 23:04:10,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:04:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 23:04:10,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2021-02-23 23:04:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 23:04:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2021-02-23 23:04:10,558 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 41 [2021-02-23 23:04:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:10,559 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2021-02-23 23:04:10,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:04:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2021-02-23 23:04:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 23:04:10,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:10,561 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:10,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:04:10,562 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:10,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1623822134, now seen corresponding path program 1 times [2021-02-23 23:04:10,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:10,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983560355] [2021-02-23 23:04:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:10,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:10,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:10,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:10,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:10,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983560355] [2021-02-23 23:04:10,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:10,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:04:10,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465018752] [2021-02-23 23:04:10,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:04:10,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:10,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:04:10,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:04:10,658 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 4 states. [2021-02-23 23:04:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:10,898 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-02-23 23:04:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:04:10,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-02-23 23:04:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:10,901 INFO L225 Difference]: With dead ends: 192 [2021-02-23 23:04:10,902 INFO L226 Difference]: Without dead ends: 133 [2021-02-23 23:04:10,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:04:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-23 23:04:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2021-02-23 23:04:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-23 23:04:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2021-02-23 23:04:10,919 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 54 [2021-02-23 23:04:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:10,919 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2021-02-23 23:04:10,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:04:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2021-02-23 23:04:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 23:04:10,921 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:10,922 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:10,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:04:10,922 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 872420046, now seen corresponding path program 1 times [2021-02-23 23:04:10,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:10,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572954650] [2021-02-23 23:04:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:11,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:11,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:04:11,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572954650] [2021-02-23 23:04:11,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:11,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:04:11,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873143089] [2021-02-23 23:04:11,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:04:11,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:11,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:04:11,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:04:11,122 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 5 states. [2021-02-23 23:04:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:11,321 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2021-02-23 23:04:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:04:11,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-02-23 23:04:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:11,328 INFO L225 Difference]: With dead ends: 144 [2021-02-23 23:04:11,330 INFO L226 Difference]: Without dead ends: 125 [2021-02-23 23:04:11,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-02-23 23:04:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2021-02-23 23:04:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 23:04:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2021-02-23 23:04:11,361 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 54 [2021-02-23 23:04:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:11,362 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2021-02-23 23:04:11,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:04:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2021-02-23 23:04:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 23:04:11,370 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:11,370 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:11,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:04:11,371 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:11,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:11,372 INFO L82 PathProgramCache]: Analyzing trace with hash -478097667, now seen corresponding path program 1 times [2021-02-23 23:04:11,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:11,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415934488] [2021-02-23 23:04:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:11,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:11,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:11,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:11,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:04:11,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415934488] [2021-02-23 23:04:11,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:11,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:04:11,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640015776] [2021-02-23 23:04:11,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:04:11,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:11,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:04:11,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:04:11,533 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 5 states. [2021-02-23 23:04:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:11,717 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2021-02-23 23:04:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:04:11,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2021-02-23 23:04:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:11,721 INFO L225 Difference]: With dead ends: 149 [2021-02-23 23:04:11,721 INFO L226 Difference]: Without dead ends: 134 [2021-02-23 23:04:11,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-23 23:04:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2021-02-23 23:04:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-23 23:04:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-02-23 23:04:11,753 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 56 [2021-02-23 23:04:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:11,754 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-02-23 23:04:11,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:04:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-02-23 23:04:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 23:04:11,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:11,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:11,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:04:11,764 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1113275188, now seen corresponding path program 1 times [2021-02-23 23:04:11,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:11,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752383561] [2021-02-23 23:04:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:11,802 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:11,833 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:11,888 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:04:11,888 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:04:11,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:04:11,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:04:11 BoogieIcfgContainer [2021-02-23 23:04:11,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:04:11,985 INFO L168 Benchmark]: Toolchain (without parser) took 4162.79 ms. Allocated memory was 156.2 MB in the beginning and 207.6 MB in the end (delta: 51.4 MB). Free memory was 132.0 MB in the beginning and 81.9 MB in the end (delta: 50.2 MB). Peak memory consumption was 101.7 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:11,985 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:04:11,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.76 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 108.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:11,987 INFO L168 Benchmark]: Boogie Preprocessor took 78.15 ms. Allocated memory is still 156.2 MB. Free memory was 108.7 MB in the beginning and 106.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:11,988 INFO L168 Benchmark]: RCFGBuilder took 740.93 ms. Allocated memory is still 156.2 MB. Free memory was 106.0 MB in the beginning and 115.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:11,989 INFO L168 Benchmark]: TraceAbstraction took 2797.71 ms. Allocated memory was 156.2 MB in the beginning and 207.6 MB in the end (delta: 51.4 MB). Free memory was 114.7 MB in the beginning and 81.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 85.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:11,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 525.76 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 108.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.15 ms. Allocated memory is still 156.2 MB. Free memory was 108.7 MB in the beginning and 106.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 740.93 ms. Allocated memory is still 156.2 MB. Free memory was 106.0 MB in the beginning and 115.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2797.71 ms. Allocated memory was 156.2 MB in the beginning and 207.6 MB in the end (delta: 51.4 MB). Free memory was 114.7 MB in the beginning and 81.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 85.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 584]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; VAL [flag=1] [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L535] List t; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L536] List l1; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L537] List l2; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L538] List b; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L539] List u; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L540] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L542] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L543] p->h = 1 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L544] flag = 0 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L550] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L551] p->n = t VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L552] EXPR p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->n={-2:0}, t={-2:0}] [L552] p = p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->n={-2:0}, t={-2:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L554] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L555] COND FALSE !(a->h == 3) VAL [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L556] flag = 1 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L557] l1 = 0 VAL [a={-1:0}, flag=1, l1={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L558] l2 = 0 VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L559] p = a VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L560] EXPR p->h VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L560] COND TRUE p->h != 3 VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L561] t = p VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-1:0}] [L562] EXPR p->n VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->n={-2:0}, t={-1:0}] [L562] p = p->n VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->n={-2:0}, t={-1:0}] [L563] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-1:0}] [L564] t->n = l1 VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-1:0}] [L565] l1 = t VAL [a={-1:0}, flag=1, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-1:0}] [L566] flag = 0 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-1:0}] [L560] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->h=3, t={-1:0}] [L560] COND FALSE !(p->h != 3) VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->h=3, t={-1:0}] [L573] p = l1 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-1:0}] [L574] COND TRUE p != 0 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-1:0}] [L575] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-1:0}] [L575] COND TRUE p->h != 2 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-1:0}] [L584] reach_error() VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 126 SDslu, 552 SDs, 0 SdLazy, 571 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 76 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 307 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 24751 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, 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...