/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_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:09:02,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:09:02,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:09:02,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:09:02,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:09:02,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:09:02,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:09:03,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:09:03,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:09:03,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:09:03,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:09:03,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:09:03,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:09:03,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:09:03,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:09:03,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:09:03,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:09:03,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:09:03,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:09:03,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:09:03,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:09:03,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:09:03,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:09:03,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:09:03,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:09:03,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:09:03,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:09:03,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:09:03,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:09:03,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:09:03,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:09:03,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:09:03,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:09:03,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:09:03,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:09:03,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:09:03,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:09:03,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:09:03,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:09:03,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:09:03,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:09:03,101 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 [2021-02-21 16:09:03,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:09:03,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:09:03,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:09:03,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:09:03,153 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:09:03,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:09:03,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:09:03,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:09:03,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:09:03,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:09:03,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:09:03,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:09:03,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:09:03,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:09:03,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:09:03,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:09:03,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:09:03,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:09:03,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:09:03,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:09:03,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:09:03,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:09:03,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:09:03,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:09:03,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:09:03,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:09:03,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:09:03,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:09:03,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:09:03,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:09:03,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:09:03,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:09:03,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:09:03,695 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:09:03,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2021-02-21 16:09:03,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ceb2a667/c00d6baf3a9349068267e03db8fed3a2/FLAG29bcc2457 [2021-02-21 16:09:04,495 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:09:04,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2021-02-21 16:09:04,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ceb2a667/c00d6baf3a9349068267e03db8fed3a2/FLAG29bcc2457 [2021-02-21 16:09:04,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ceb2a667/c00d6baf3a9349068267e03db8fed3a2 [2021-02-21 16:09:04,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:09:04,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:09:04,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:09:04,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:09:04,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:09:04,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:04" (1/1) ... [2021-02-21 16:09:04,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d131c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:04, skipping insertion in model container [2021-02-21 16:09:04,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:04" (1/1) ... [2021-02-21 16:09:04,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:09:04,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:09:05,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2021-02-21 16:09:05,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:09:05,200 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:09:05,285 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2021-02-21 16:09:05,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:09:05,368 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:09:05,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05 WrapperNode [2021-02-21 16:09:05,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:09:05,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:09:05,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:09:05,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:09:05,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... [2021-02-21 16:09:05,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:09:05,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:09:05,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:09:05,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:09:05,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:09:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:09:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:09:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:09:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 16:09:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 16:09:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 16:09:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 16:09:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 16:09:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 16:09:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:09:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:09:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:09:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:09:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:09:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:09:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:09:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 16:09:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 16:09:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 16:09:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 16:09:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:09:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:09:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:09:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:09:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:09:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:09:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:09:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:09:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:09:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:09:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:09:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:09:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:09:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:09:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:09:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:09:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:09:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:09:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:09:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 16:09:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:09:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:09:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:09:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:09:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:09:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:09:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:09:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:09:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:09:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:09:06,181 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 16:09:06,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:09:06,460 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 16:09:06,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:06 BoogieIcfgContainer [2021-02-21 16:09:06,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:09:06,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:09:06,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:09:06,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:09:06,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:09:04" (1/3) ... [2021-02-21 16:09:06,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5238803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:06, skipping insertion in model container [2021-02-21 16:09:06,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:05" (2/3) ... [2021-02-21 16:09:06,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5238803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:06, skipping insertion in model container [2021-02-21 16:09:06,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:06" (3/3) ... [2021-02-21 16:09:06,490 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2021-02-21 16:09:06,501 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:09:06,507 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:09:06,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:09:06,573 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:09:06,574 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:09:06,574 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:09:06,574 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:09:06,574 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:09:06,574 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:09:06,574 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:09:06,574 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:09:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-21 16:09:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-21 16:09:06,608 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:06,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:06,610 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash -939025017, now seen corresponding path program 1 times [2021-02-21 16:09:06,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:06,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011449082] [2021-02-21 16:09:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:06,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:06,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:06,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:06,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:06,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:06,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:06,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011449082] [2021-02-21 16:09:06,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:06,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:09:06,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446557238] [2021-02-21 16:09:06,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:09:06,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:09:06,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:09:06,988 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-02-21 16:09:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:07,127 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2021-02-21 16:09:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:09:07,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-02-21 16:09:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:07,139 INFO L225 Difference]: With dead ends: 46 [2021-02-21 16:09:07,139 INFO L226 Difference]: Without dead ends: 24 [2021-02-21 16:09:07,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:09:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-21 16:09:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-02-21 16:09:07,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-02-21 16:09:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-02-21 16:09:07,184 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2021-02-21 16:09:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:07,184 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-02-21 16:09:07,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:09:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-02-21 16:09:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 16:09:07,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:07,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:07,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:09:07,186 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:07,187 INFO L82 PathProgramCache]: Analyzing trace with hash -737223875, now seen corresponding path program 1 times [2021-02-21 16:09:07,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:07,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777098661] [2021-02-21 16:09:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:07,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:07,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:07,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:07,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:07,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:07,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777098661] [2021-02-21 16:09:07,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:07,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:09:07,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970831570] [2021-02-21 16:09:07,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:09:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:09:07,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:09:07,334 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2021-02-21 16:09:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:07,501 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-21 16:09:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:09:07,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-21 16:09:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:07,503 INFO L225 Difference]: With dead ends: 48 [2021-02-21 16:09:07,504 INFO L226 Difference]: Without dead ends: 44 [2021-02-21 16:09:07,505 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 [2021-02-21 16:09:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-21 16:09:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2021-02-21 16:09:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 16:09:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-02-21 16:09:07,514 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2021-02-21 16:09:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:07,515 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-02-21 16:09:07,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:09:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-02-21 16:09:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 16:09:07,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:07,516 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:07,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:09:07,516 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash 246136600, now seen corresponding path program 1 times [2021-02-21 16:09:07,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:07,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121220019] [2021-02-21 16:09:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:07,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:07,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:07,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:07,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:07,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:07,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121220019] [2021-02-21 16:09:07,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:07,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:09:07,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654299105] [2021-02-21 16:09:07,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:09:07,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:07,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:09:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:09:07,674 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2021-02-21 16:09:07,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:07,814 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-02-21 16:09:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:09:07,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-02-21 16:09:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:07,816 INFO L225 Difference]: With dead ends: 50 [2021-02-21 16:09:07,816 INFO L226 Difference]: Without dead ends: 42 [2021-02-21 16:09:07,816 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 [2021-02-21 16:09:07,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-21 16:09:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-02-21 16:09:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-21 16:09:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-02-21 16:09:07,830 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2021-02-21 16:09:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:07,833 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-02-21 16:09:07,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:09:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-02-21 16:09:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 16:09:07,834 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:07,834 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:07,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:09:07,835 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash -997604921, now seen corresponding path program 1 times [2021-02-21 16:09:07,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:07,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901817300] [2021-02-21 16:09:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:07,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:07,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:07,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:07,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:07,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:07,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:07,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901817300] [2021-02-21 16:09:07,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:07,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:09:07,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320972582] [2021-02-21 16:09:07,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:09:07,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:07,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:09:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:09:07,975 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2021-02-21 16:09:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:08,115 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-02-21 16:09:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:09:08,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-02-21 16:09:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:08,117 INFO L225 Difference]: With dead ends: 48 [2021-02-21 16:09:08,118 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 16:09:08,121 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 [2021-02-21 16:09:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 16:09:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-02-21 16:09:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-21 16:09:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-02-21 16:09:08,135 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2021-02-21 16:09:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:08,135 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-02-21 16:09:08,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:09:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-02-21 16:09:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:09:08,136 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:08,136 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] [2021-02-21 16:09:08,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:09:08,137 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:08,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:08,137 INFO L82 PathProgramCache]: Analyzing trace with hash -832947214, now seen corresponding path program 1 times [2021-02-21 16:09:08,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:08,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914284295] [2021-02-21 16:09:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:08,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:08,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:08,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:08,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:09:08,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:08,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:08,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:08,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:08,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:08,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914284295] [2021-02-21 16:09:08,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:08,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:09:08,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887954664] [2021-02-21 16:09:08,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:09:08,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:08,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:09:08,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:09:08,292 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2021-02-21 16:09:08,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:08,356 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-02-21 16:09:08,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:09:08,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-02-21 16:09:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:08,358 INFO L225 Difference]: With dead ends: 54 [2021-02-21 16:09:08,358 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 16:09:08,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:09:08,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 16:09:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-02-21 16:09:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-21 16:09:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-02-21 16:09:08,365 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 23 [2021-02-21 16:09:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:08,365 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-02-21 16:09:08,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:09:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-02-21 16:09:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:09:08,366 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:08,367 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] [2021-02-21 16:09:08,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:09:08,367 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:08,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1276684159, now seen corresponding path program 1 times [2021-02-21 16:09:08,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:08,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435885192] [2021-02-21 16:09:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:09:08,413 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:09:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:09:08,430 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:09:08,463 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:09:08,463 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:09:08,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 16:09:08,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:09:08 BoogieIcfgContainer [2021-02-21 16:09:08,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:09:08,530 INFO L168 Benchmark]: Toolchain (without parser) took 3738.77 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 135.3 MB in the beginning and 167.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 1.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:08,532 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 135.5 MB in the end (delta: 83.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:09:08,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.94 ms. Allocated memory is still 161.5 MB. Free memory was 134.2 MB in the beginning and 112.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:08,537 INFO L168 Benchmark]: Boogie Preprocessor took 145.33 ms. Allocated memory is still 161.5 MB. Free memory was 112.2 MB in the beginning and 143.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:08,539 INFO L168 Benchmark]: RCFGBuilder took 953.62 ms. Allocated memory is still 161.5 MB. Free memory was 143.0 MB in the beginning and 101.6 MB in the end (delta: 41.4 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:08,541 INFO L168 Benchmark]: TraceAbstraction took 2054.75 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 101.6 MB in the beginning and 167.8 MB in the end (delta: -66.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:09:08,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 135.5 MB in the end (delta: 83.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.94 ms. Allocated memory is still 161.5 MB. Free memory was 134.2 MB in the beginning and 112.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 145.33 ms. Allocated memory is still 161.5 MB. Free memory was 112.2 MB in the beginning and 143.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 953.62 ms. Allocated memory is still 161.5 MB. Free memory was 143.0 MB in the beginning and 101.6 MB in the end (delta: 41.4 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2054.75 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 101.6 MB in the beginning and 167.8 MB in the end (delta: -66.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}] [L535] COND FALSE !(a == 0) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}] [L536] p = a VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}, p={-2:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 1 VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-2:0}, p={-2:0}] [L543] t = (List) malloc(sizeof(struct node)) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L544] COND FALSE !(t == 0) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L550] COND TRUE \read(flag) VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] [L551] EXPR p->h VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->h=1, t={-3:0}] [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->h=1, t={-3:0}] [L556] COND TRUE p->h != 3 [L557] reach_error() VAL [a={-2:0}, flag=-1, malloc(sizeof(struct node))={-3:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 73 SDslu, 178 SDs, 0 SdLazy, 288 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 6014 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...