/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 OctagonDomain -i ../sv-benchmarks/c/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:40:27,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:40:27,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:40:27,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:40:27,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:40:27,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:40:27,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:40:27,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:40:27,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:40:27,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:40:27,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:40:27,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:40:27,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:40:27,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:40:27,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:40:27,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:40:27,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:40:27,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:40:27,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:40:27,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:40:27,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:40:27,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:40:27,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:40:27,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:40:27,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:40:27,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:40:27,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:40:27,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:40:27,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:40:27,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:40:27,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:40:27,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:40:27,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:40:27,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:40:27,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:40:27,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:40:27,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:40:27,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:40:27,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:40:27,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:40:27,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:40:27,792 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 [2023-04-02 21:40:27,819 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:40:27,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:40:27,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:40:27,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:40:27,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:40:27,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:40:27,821 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:40:27,821 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:40:27,822 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:40:27,822 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:40:27,822 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:40:27,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:40:27,823 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:40:27,823 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:40:27,823 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:40:27,823 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:40:27,823 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:40:27,823 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:40:27,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:40:27,824 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:40:27,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:40:27,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:40:27,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:40:27,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:40:27,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:40:27,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:40:27,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:40:27,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:40:27,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:40:27,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:40:27,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:40:27,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:40:27,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:40:27,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:40:27,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:40:27,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:40:28,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:40:28,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:40:28,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:40:28,073 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:40:28,076 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:40:28,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_add-1.i [2023-04-02 21:40:29,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:40:29,450 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:40:29,451 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i [2023-04-02 21:40:29,461 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb7797371/de1ac3a222204e6fb6ce655b7398029b/FLAGc4efb4c41 [2023-04-02 21:40:29,474 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb7797371/de1ac3a222204e6fb6ce655b7398029b [2023-04-02 21:40:29,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:40:29,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:40:29,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:40:29,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:40:29,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:40:29,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:29,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447c9964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29, skipping insertion in model container [2023-04-02 21:40:29,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:29,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:40:29,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:40:29,859 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] [2023-04-02 21:40:29,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:40:29,874 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:40:29,933 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] [2023-04-02 21:40:29,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:40:29,959 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:40:29,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29 WrapperNode [2023-04-02 21:40:29,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:40:29,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:40:29,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:40:29,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:40:29,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:29,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:40:30,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:40:30,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:40:30,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:40:30,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (1/1) ... [2023-04-02 21:40:30,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:40:30,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:30,093 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) [2023-04-02 21:40:30,103 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 [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 21:40:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-04-02 21:40:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-02 21:40:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-04-02 21:40:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-04-02 21:40:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-04-02 21:40:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-04-02 21:40:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:40:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 21:40:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 21:40:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 21:40:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 21:40:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 21:40:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 21:40:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 21:40:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 21:40:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 21:40:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 21:40:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 21:40:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 21:40:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 21:40:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 21:40:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 21:40:30,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 21:40:30,142 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 21:40:30,143 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 21:40:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 21:40:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 21:40:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 21:40:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 21:40:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 21:40:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:40:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 21:40:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 21:40:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:40:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:40:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 21:40:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 21:40:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-02 21:40:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-04-02 21:40:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:40:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-04-02 21:40:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:40:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:40:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:40:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 21:40:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:40:30,428 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:40:30,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:40:30,674 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:40:30,752 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:40:30,752 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 21:40:30,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:40:30 BoogieIcfgContainer [2023-04-02 21:40:30,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:40:30,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:40:30,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:40:30,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:40:30,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:40:29" (1/3) ... [2023-04-02 21:40:30,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156aea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:40:30, skipping insertion in model container [2023-04-02 21:40:30,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:29" (2/3) ... [2023-04-02 21:40:30,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156aea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:40:30, skipping insertion in model container [2023-04-02 21:40:30,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:40:30" (3/3) ... [2023-04-02 21:40:30,761 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2023-04-02 21:40:30,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:40:30,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:40:30,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:40:30,832 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;@5ce8f4c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:40:30,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:40:30,836 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) [2023-04-02 21:40:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 21:40:30,842 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:30,843 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] [2023-04-02 21:40:30,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:30,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 11888667, now seen corresponding path program 1 times [2023-04-02 21:40:30,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:30,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570325647] [2023-04-02 21:40:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 21:40:31,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570325647] [2023-04-02 21:40:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570325647] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:40:31,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287659938] [2023-04-02 21:40:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:31,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:31,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:31,159 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) [2023-04-02 21:40:31,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:40:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:31,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 21:40:31,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:40:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:40:31,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 21:40:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287659938] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:40:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 21:40:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-04-02 21:40:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926717693] [2023-04-02 21:40:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:40:31,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:40:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:40:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:40:31,429 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) [2023-04-02 21:40:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:31,512 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-04-02 21:40:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:40:31,514 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 [2023-04-02 21:40:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:31,521 INFO L225 Difference]: With dead ends: 66 [2023-04-02 21:40:31,521 INFO L226 Difference]: Without dead ends: 42 [2023-04-02 21:40:31,523 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 [2023-04-02 21:40:31,528 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:40:31,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:40:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-02 21:40:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-04-02 21:40:31,563 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) [2023-04-02 21:40:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-04-02 21:40:31,566 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2023-04-02 21:40:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:31,567 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-04-02 21:40:31,567 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) [2023-04-02 21:40:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-04-02 21:40:31,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 21:40:31,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:31,570 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] [2023-04-02 21:40:31,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 21:40:31,776 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 [2023-04-02 21:40:31,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:31,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1292533567, now seen corresponding path program 1 times [2023-04-02 21:40:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915953728] [2023-04-02 21:40:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 21:40:31,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:31,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915953728] [2023-04-02 21:40:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915953728] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:40:31,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:40:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:40:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734504835] [2023-04-02 21:40:31,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:40:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:40:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:40:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:40:31,881 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) [2023-04-02 21:40:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:31,925 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2023-04-02 21:40:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:40:31,925 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 [2023-04-02 21:40:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:31,928 INFO L225 Difference]: With dead ends: 46 [2023-04-02 21:40:31,928 INFO L226 Difference]: Without dead ends: 42 [2023-04-02 21:40:31,929 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 [2023-04-02 21:40:31,932 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 [2023-04-02 21:40:31,932 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] [2023-04-02 21:40:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-02 21:40:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-04-02 21:40:31,944 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) [2023-04-02 21:40:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2023-04-02 21:40:31,946 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 26 [2023-04-02 21:40:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:31,947 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2023-04-02 21:40:31,947 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) [2023-04-02 21:40:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2023-04-02 21:40:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-02 21:40:31,948 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:31,948 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] [2023-04-02 21:40:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:40:31,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:31,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1391610789, now seen corresponding path program 1 times [2023-04-02 21:40:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847316524] [2023-04-02 21:40:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:32,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847316524] [2023-04-02 21:40:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847316524] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:40:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616494000] [2023-04-02 21:40:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:32,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:32,609 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) [2023-04-02 21:40:32,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 21:40:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:32,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 21:40:32,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:40:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:40:33,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 21:40:33,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616494000] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:40:33,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 21:40:33,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-04-02 21:40:33,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531232486] [2023-04-02 21:40:33,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:40:33,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 21:40:33,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:33,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 21:40:33,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-02 21:40:33,122 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) [2023-04-02 21:40:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:33,363 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2023-04-02 21:40:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 21:40:33,364 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 [2023-04-02 21:40:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:33,366 INFO L225 Difference]: With dead ends: 62 [2023-04-02 21:40:33,366 INFO L226 Difference]: Without dead ends: 53 [2023-04-02 21:40:33,367 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 [2023-04-02 21:40:33,369 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 [2023-04-02 21:40:33,369 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] [2023-04-02 21:40:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-02 21:40:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2023-04-02 21:40:33,377 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) [2023-04-02 21:40:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2023-04-02 21:40:33,377 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 27 [2023-04-02 21:40:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:33,378 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2023-04-02 21:40:33,378 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) [2023-04-02 21:40:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2023-04-02 21:40:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-02 21:40:33,379 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:33,379 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] [2023-04-02 21:40:33,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 21:40:33,586 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 [2023-04-02 21:40:33,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:33,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1977866338, now seen corresponding path program 1 times [2023-04-02 21:40:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574162039] [2023-04-02 21:40:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:40:33,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:40:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:40:33,716 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:40:33,716 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:40:33,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:40:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 21:40:33,723 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-02 21:40:33,726 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:40:33,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:40:33 BoogieIcfgContainer [2023-04-02 21:40:33,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:40:33,753 INFO L158 Benchmark]: Toolchain (without parser) took 4276.12ms. Allocated memory is still 292.6MB. Free memory was 245.6MB in the beginning and 130.9MB in the end (delta: 114.7MB). Peak memory consumption was 115.4MB. Max. memory is 8.0GB. [2023-04-02 21:40:33,753 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:40:33,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.79ms. Allocated memory is still 292.6MB. Free memory was 245.3MB in the beginning and 226.7MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-02 21:40:33,754 INFO L158 Benchmark]: Boogie Preprocessor took 90.11ms. Allocated memory is still 292.6MB. Free memory was 226.7MB in the beginning and 223.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-02 21:40:33,754 INFO L158 Benchmark]: RCFGBuilder took 702.88ms. Allocated memory is still 292.6MB. Free memory was 223.6MB in the beginning and 256.2MB in the end (delta: -32.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-04-02 21:40:33,754 INFO L158 Benchmark]: TraceAbstraction took 2996.33ms. Allocated memory is still 292.6MB. Free memory was 255.2MB in the beginning and 130.9MB in the end (delta: 124.3MB). Peak memory consumption was 123.7MB. Max. memory is 8.0GB. [2023-04-02 21:40:33,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 480.79ms. Allocated memory is still 292.6MB. Free memory was 245.3MB in the beginning and 226.7MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 90.11ms. Allocated memory is still 292.6MB. Free memory was 226.7MB in the beginning and 223.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 702.88ms. Allocated memory is still 292.6MB. Free memory was 223.6MB in the beginning and 256.2MB in the end (delta: -32.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2996.33ms. Allocated memory is still 292.6MB. Free memory was 255.2MB in the beginning and 130.9MB in the end (delta: 124.3MB). Peak memory consumption was 123.7MB. 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: 2.9s, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s 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! [2023-04-02 21:40:33,772 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...