/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:52:28,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:52:28,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:52:28,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:52:28,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:52:28,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:52:28,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:52:28,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:52:28,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:52:28,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:52:28,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:52:28,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:52:28,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:52:28,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:52:28,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:52:28,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:52:28,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:52:28,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:52:28,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:52:28,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:52:28,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:52:28,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:52:28,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:52:28,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:52:28,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:52:28,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:52:28,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:52:28,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:52:28,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:52:28,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:52:28,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:52:28,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:52:28,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:52:28,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:52:28,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:52:28,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:52:28,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:52:28,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:52:28,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:52:28,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:52:28,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:52:28,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:52:28,504 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:52:28,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:52:28,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:52:28,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:52:28,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:52:28,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:52:28,506 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:52:28,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:52:28,506 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:52:28,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:52:28,507 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:52:28,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:52:28,507 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:52:28,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:52:28,507 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:52:28,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:52:28,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:52:28,508 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:52:28,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:52:28,508 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:52:28,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:52:28,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:52:28,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:52:28,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:52:28,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:52:28,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:52:28,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:52:28,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:52:28,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:52:28,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:52:28,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:52:28,736 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:52:28,737 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:52:28,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_add-1.i [2023-03-31 22:52:29,829 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:52:30,059 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:52:30,059 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i [2023-03-31 22:52:30,074 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14cde0af/2812395eebe94963a48bc2cbbd5e8f5d/FLAG2b54a9dcf [2023-03-31 22:52:30,092 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14cde0af/2812395eebe94963a48bc2cbbd5e8f5d [2023-03-31 22:52:30,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:52:30,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:52:30,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:52:30,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:52:30,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:52:30,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a05ca72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30, skipping insertion in model container [2023-03-31 22:52:30,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:52:30,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:52:30,367 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2023-03-31 22:52:30,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:52:30,380 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:52:30,417 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2023-03-31 22:52:30,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:52:30,441 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:52:30,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30 WrapperNode [2023-03-31 22:52:30,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:52:30,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:52:30,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:52:30,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:52:30,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:52:30,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:52:30,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:52:30,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:52:30,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (1/1) ... [2023-03-31 22:52:30,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:52:30,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:52:30,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:52:30,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:52:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:52:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:52:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 22:52:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 22:52:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:52:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:52:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-03-31 22:52:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-03-31 22:52:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-03-31 22:52:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-03-31 22:52:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-03-31 22:52:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-03-31 22:52:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-03-31 22:52:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:52:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 22:52:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 22:52:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:52:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:52:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:52:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:52:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:52:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:52:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:52:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:52:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:52:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:52:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:52:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:52:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:52:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:52:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:52:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:52:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:52:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:52:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:52:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:52:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:52:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:52:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:52:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:52:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:52:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:52:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:52:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:52:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:52:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-03-31 22:52:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-03-31 22:52:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:52:30,827 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:52:30,829 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:52:31,056 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:52:31,112 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:52:31,112 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 22:52:31,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:52:31 BoogieIcfgContainer [2023-03-31 22:52:31,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:52:31,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:52:31,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:52:31,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:52:31,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:52:30" (1/3) ... [2023-03-31 22:52:31,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adf774a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:52:31, skipping insertion in model container [2023-03-31 22:52:31,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:30" (2/3) ... [2023-03-31 22:52:31,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adf774a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:52:31, skipping insertion in model container [2023-03-31 22:52:31,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:52:31" (3/3) ... [2023-03-31 22:52:31,120 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2023-03-31 22:52:31,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:52:31,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:52:31,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:52:31,181 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4bf14af6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:52:31,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:52:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 22:52:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-03-31 22:52:31,192 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:31,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:31,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:31,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash 11888667, now seen corresponding path program 1 times [2023-03-31 22:52:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234590012] [2023-03-31 22:52:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 22:52:31,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234590012] [2023-03-31 22:52:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234590012] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:52:31,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351097357] [2023-03-31 22:52:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:31,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:52:31,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:52:31,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:52:31,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:52:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:31,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-31 22:52:31,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:52:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:52:31,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:52:31,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351097357] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:31,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:52:31,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-03-31 22:52:31,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326060071] [2023-03-31 22:52:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:31,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:52:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:52:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:31,660 INFO L87 Difference]: Start difference. First operand has 46 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-31 22:52:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:31,767 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-03-31 22:52:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:52:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-03-31 22:52:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:31,775 INFO L225 Difference]: With dead ends: 66 [2023-03-31 22:52:31,775 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 22:52:31,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:31,780 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:31,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:52:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 22:52:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-03-31 22:52:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2023-03-31 22:52:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-03-31 22:52:31,819 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2023-03-31 22:52:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:31,820 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-03-31 22:52:31,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-31 22:52:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-03-31 22:52:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 22:52:31,823 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:31,823 INFO L195 NwaCegarLoop]: 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] [2023-03-31 22:52:31,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:52:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-03-31 22:52:32,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:32,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1292533567, now seen corresponding path program 1 times [2023-03-31 22:52:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786592413] [2023-03-31 22:52:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 22:52:32,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786592413] [2023-03-31 22:52:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786592413] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:32,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:52:32,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:52:32,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822558419] [2023-03-31 22:52:32,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:32,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:52:32,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:52:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:32,127 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-31 22:52:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:32,178 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2023-03-31 22:52:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:52:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2023-03-31 22:52:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:32,179 INFO L225 Difference]: With dead ends: 46 [2023-03-31 22:52:32,179 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 22:52:32,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:32,181 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:32,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:52:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 22:52:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-03-31 22:52:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-03-31 22:52:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2023-03-31 22:52:32,185 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 26 [2023-03-31 22:52:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:32,186 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2023-03-31 22:52:32,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-31 22:52:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2023-03-31 22:52:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 22:52:32,187 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:32,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:32,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:52:32,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:32,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1391610789, now seen corresponding path program 1 times [2023-03-31 22:52:32,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:32,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79009847] [2023-03-31 22:52:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:32,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 22:52:32,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:32,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79009847] [2023-03-31 22:52:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79009847] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:52:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139255572] [2023-03-31 22:52:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:32,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:52:32,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:52:32,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:52:32,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:52:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:32,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2023-03-31 22:52:32,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:52:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:52:33,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:52:33,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139255572] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:33,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:52:33,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-03-31 22:52:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051188769] [2023-03-31 22:52:33,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:33,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 22:52:33,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:33,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 22:52:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-03-31 22:52:33,086 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 22:52:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:33,266 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2023-03-31 22:52:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 22:52:33,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2023-03-31 22:52:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:33,269 INFO L225 Difference]: With dead ends: 62 [2023-03-31 22:52:33,269 INFO L226 Difference]: Without dead ends: 53 [2023-03-31 22:52:33,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-03-31 22:52:33,272 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:33,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 43 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:52:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-03-31 22:52:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2023-03-31 22:52:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 22:52:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2023-03-31 22:52:33,289 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 27 [2023-03-31 22:52:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:33,290 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2023-03-31 22:52:33,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 22:52:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2023-03-31 22:52:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-03-31 22:52:33,291 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:33,292 INFO L195 NwaCegarLoop]: 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] [2023-03-31 22:52:33,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:52:33,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-03-31 22:52:33,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:33,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1977866338, now seen corresponding path program 1 times [2023-03-31 22:52:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157544629] [2023-03-31 22:52:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:52:33,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:52:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:52:33,567 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:52:33,568 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:52:33,568 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:52:33,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 22:52:33,572 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 22:52:33,574 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:52:33,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:52:33 BoogieIcfgContainer [2023-03-31 22:52:33,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:52:33,595 INFO L158 Benchmark]: Toolchain (without parser) took 3498.59ms. Allocated memory is still 286.3MB. Free memory was 236.8MB in the beginning and 161.1MB in the end (delta: 75.7MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2023-03-31 22:52:33,596 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory was 136.8MB in the beginning and 136.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:52:33,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.63ms. Allocated memory is still 286.3MB. Free memory was 236.8MB in the beginning and 218.3MB in the end (delta: 18.6MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 22:52:33,596 INFO L158 Benchmark]: Boogie Preprocessor took 47.31ms. Allocated memory is still 286.3MB. Free memory was 218.3MB in the beginning and 214.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-03-31 22:52:33,596 INFO L158 Benchmark]: RCFGBuilder took 624.50ms. Allocated memory is still 286.3MB. Free memory was 214.8MB in the beginning and 246.7MB in the end (delta: -31.9MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. [2023-03-31 22:52:33,597 INFO L158 Benchmark]: TraceAbstraction took 2478.92ms. Allocated memory is still 286.3MB. Free memory was 246.2MB in the beginning and 161.1MB in the end (delta: 85.0MB). Peak memory consumption was 85.0MB. Max. memory is 8.0GB. [2023-03-31 22:52:33,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory was 136.8MB in the beginning and 136.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 343.63ms. Allocated memory is still 286.3MB. Free memory was 236.8MB in the beginning and 218.3MB in the end (delta: 18.6MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.31ms. Allocated memory is still 286.3MB. Free memory was 218.3MB in the beginning and 214.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 624.50ms. Allocated memory is still 286.3MB. Free memory was 214.8MB in the beginning and 246.7MB in the end (delta: -31.9MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2478.92ms. Allocated memory is still 286.3MB. Free memory was 246.2MB in the beginning and 161.1MB in the end (delta: 85.0MB). Peak memory consumption was 85.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 667]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L662] struct ldv_list_head s1 = { &(s1), &(s1) }; [L671] CALL foo() VAL [s1={3:0}] [L665] int j = __VERIFIER_nondet_int(); [L666] CALL ldv_set_add(j, &s1) VAL [\old(new)=0, s1={3:0}, s={3:0}] [L633] CALL, EXPR ldv_is_in_set(new, s) VAL [\old(e)=0, s1={3:0}, s={3:0}] [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=0, __mptr={3:0}, e=0, m={3:-4}, s1={3:0}, s={3:0}, s={3:0}] [L652] COND FALSE !(&m->list != (s)) [L657] return 0; VAL [\old(e)=0, \result=0, __mptr={3:0}, e=0, m={3:-4}, s1={3:0}, s={3:0}, s={3:0}] [L633] RET, EXPR ldv_is_in_set(new, s) VAL [\old(new)=0, ldv_is_in_set(new, s)=0, new=0, s1={3:0}, s={3:0}, s={3:0}] [L633] COND TRUE !ldv_is_in_set(new, s) [L634] struct ldv_list_element *le; VAL [\old(new)=0, new=0, s1={3:0}, s={3:0}, s={3:0}] [L635] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, s1={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, s1={3:0}] [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, ptr={-1:0}, s1={3:0}, size=12] [L578] return ptr; [L635] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(new)=0, ldv_successful_malloc(sizeof(struct ldv_list_element))={-1:0}, new=0, s1={3:0}, s={3:0}, s={3:0}] [L635] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L636] le->e = new VAL [\old(new)=0, le={-1:0}, new=0, s1={3:0}, s={3:0}, s={3:0}] [L637] CALL ldv_list_add(&le->list, s) VAL [head={3:0}, new={-1:4}, s1={3:0}] [L605] EXPR head->next VAL [head->next={3:0}, head={3:0}, head={3:0}, new={-1:4}, new={-1:4}, s1={3:0}] [L605] CALL __ldv_list_add(new, head, head->next) VAL [new={-1:4}, next={3:0}, prev={3:0}, s1={3:0}] [L593] next->prev = new [L594] new->next = next [L595] new->prev = prev [L596] prev->next = new [L605] RET __ldv_list_add(new, head, head->next) VAL [head->next={3:0}, head={3:0}, head={3:0}, new={-1:4}, new={-1:4}, s1={3:0}] [L637] RET ldv_list_add(&le->list, s) VAL [\old(new)=0, le={-1:0}, new=0, s1={3:0}, s={3:0}, s={3:0}] [L666] RET ldv_set_add(j, &s1) VAL [j=0, s1={3:0}] [L667] CALL ldv_is_in_set(j, &s1) VAL [\old(e)=0, s1={3:0}, s={3:0}] [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=0, __mptr={-1:4}, e=0, m={-1:0}, s1={3:0}, s={3:0}, s={3:0}] [L652] COND TRUE &m->list != (s) [L653] EXPR m->e VAL [\old(e)=0, __mptr={-1:4}, e=0, m->e=0, m={-1:0}, s1={3:0}, s={3:0}, s={3:0}] [L653] COND TRUE m->e == e [L654] return 1; VAL [\old(e)=0, \result=1, __mptr={-1:4}, e=0, m={-1:0}, s1={3:0}, s={3:0}, s={3:0}] [L667] RET ldv_is_in_set(j, &s1) VAL [j=0, ldv_is_in_set(j, &s1)=1, s1={3:0}] [L667] COND TRUE ldv_is_in_set(j, &s1) [L667] reach_error() VAL [j=0, s1={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 245 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 152 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 91 mSDtfsCounter, 152 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 867 SizeOfPredicates, 10 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 16/22 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! [2023-03-31 22:52:33,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...