/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/heap-data/shared_mem2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:56:27,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:56:27,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:56:27,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:56:27,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:56:27,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:56:27,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:56:27,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:56:27,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:56:27,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:56:27,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:56:27,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:56:27,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:56:27,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:56:27,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:56:27,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:56:27,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:56:27,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:56:27,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:56:27,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:56:27,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:56:27,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:56:27,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:56:27,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:56:27,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:56:27,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:56:27,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:56:27,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:56:27,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:56:27,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:56:27,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:56:27,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:56:27,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:56:27,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:56:27,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:56:27,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:56:27,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:56:27,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:56:27,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:56:27,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:56:27,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:56:27,491 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 22:56:27,510 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:56:27,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:56:27,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:56:27,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:56:27,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:56:27,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:56:27,511 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:56:27,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:56:27,512 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:56:27,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:56:27,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:56:27,513 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:56:27,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:56:27,514 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:56:27,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:56:27,515 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:56:27,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:56:27,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:56:27,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:56:27,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:56:27,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:56:27,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:56:27,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:56:27,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:56:27,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:56:27,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:56:27,766 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:56:27,767 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:56:27,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/shared_mem2.i [2023-03-31 22:56:28,938 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:56:29,152 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:56:29,153 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem2.i [2023-03-31 22:56:29,169 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddff27172/3d05fc2cb4f1476f906fc3bb0064a540/FLAG118019274 [2023-03-31 22:56:29,180 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddff27172/3d05fc2cb4f1476f906fc3bb0064a540 [2023-03-31 22:56:29,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:56:29,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:56:29,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:56:29,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:56:29,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:56:29,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea44439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29, skipping insertion in model container [2023-03-31 22:56:29,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:56:29,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:56:29,450 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/heap-data/shared_mem2.i[23827,23840] [2023-03-31 22:56:29,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:56:29,472 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:56:29,534 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/heap-data/shared_mem2.i[23827,23840] [2023-03-31 22:56:29,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:56:29,562 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:56:29,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29 WrapperNode [2023-03-31 22:56:29,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:56:29,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:56:29,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:56:29,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:56:29,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,624 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:56:29,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:56:29,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:56:29,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:56:29,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (1/1) ... [2023-03-31 22:56:29,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:56:29,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:56:29,670 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 22:56:29,677 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 22:56:29,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:56:29,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:56:29,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:56:29,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 22:56:29,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 22:56:29,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:56:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:56:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:56:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:56:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:56:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:56:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:56:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:56:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 22:56:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 22:56:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:56:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:56:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:56:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:56:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:56:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:56:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:56:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:56:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:56:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:56:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:56:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:56:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:56:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:56:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:56:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:56:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:56:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 22:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:56:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:56:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:56:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:56:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:56:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:56:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:56:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:56:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:56:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:56:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:56:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:56:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:56:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:56:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:56:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:56:30,009 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:56:30,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:56:30,156 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:56:30,215 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:56:30,215 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 22:56:30,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:56:30 BoogieIcfgContainer [2023-03-31 22:56:30,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:56:30,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:56:30,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:56:30,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:56:30,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:56:29" (1/3) ... [2023-03-31 22:56:30,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb1ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:56:30, skipping insertion in model container [2023-03-31 22:56:30,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:29" (2/3) ... [2023-03-31 22:56:30,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb1ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:56:30, skipping insertion in model container [2023-03-31 22:56:30,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:56:30" (3/3) ... [2023-03-31 22:56:30,230 INFO L112 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2023-03-31 22:56:30,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:56:30,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:56:30,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:56:30,287 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;@2e8ea5e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:56:30,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:56:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:56:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:56:30,298 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:30,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:30,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:30,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2088126680, now seen corresponding path program 1 times [2023-03-31 22:56:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682973053] [2023-03-31 22:56:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:30,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:30,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682973053] [2023-03-31 22:56:30,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682973053] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:56:30,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:56:30,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:56:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555499071] [2023-03-31 22:56:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:56:30,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:56:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:30,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:56:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:56:30,594 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:30,618 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2023-03-31 22:56:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:56:30,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 22:56:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:30,626 INFO L225 Difference]: With dead ends: 29 [2023-03-31 22:56:30,626 INFO L226 Difference]: Without dead ends: 14 [2023-03-31 22:56:30,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:56:30,631 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:30,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:56:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-03-31 22:56:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-03-31 22:56:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-03-31 22:56:30,658 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2023-03-31 22:56:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:30,658 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-03-31 22:56:30,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-03-31 22:56:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 22:56:30,659 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:30,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:56:30,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:30,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -446061351, now seen corresponding path program 1 times [2023-03-31 22:56:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525946088] [2023-03-31 22:56:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:31,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:31,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525946088] [2023-03-31 22:56:31,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525946088] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:56:31,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:56:31,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:56:31,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763542411] [2023-03-31 22:56:31,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:56:31,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:56:31,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:56:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:56:31,064 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:31,127 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-03-31 22:56:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:56:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-31 22:56:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:31,129 INFO L225 Difference]: With dead ends: 23 [2023-03-31 22:56:31,129 INFO L226 Difference]: Without dead ends: 19 [2023-03-31 22:56:31,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:56:31,136 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:31,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:56:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-03-31 22:56:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-03-31 22:56:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-03-31 22:56:31,145 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2023-03-31 22:56:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:31,145 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-03-31 22:56:31,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-03-31 22:56:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:56:31,147 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:31,147 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:56:31,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:31,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1875794801, now seen corresponding path program 1 times [2023-03-31 22:56:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:31,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110106330] [2023-03-31 22:56:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:31,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:31,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110106330] [2023-03-31 22:56:31,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110106330] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:56:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224600552] [2023-03-31 22:56:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:31,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:56:31,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:56:31,801 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 22:56:31,820 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 22:56:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:31,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 31 conjunts are in the unsatisfiable core [2023-03-31 22:56:31,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:56:32,063 INFO L321 Elim1Store]: treesize reduction 38, result has 33.3 percent of original size [2023-03-31 22:56:32,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 86 [2023-03-31 22:56:32,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 22 [2023-03-31 22:56:32,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2023-03-31 22:56:32,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2023-03-31 22:56:32,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-03-31 22:56:32,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:56:32,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:56:32,798 INFO L321 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2023-03-31 22:56:32,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 105 [2023-03-31 22:56:32,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-03-31 22:56:32,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2023-03-31 22:56:32,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-03-31 22:56:32,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2023-03-31 22:56:32,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 22:56:33,016 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-03-31 22:56:33,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2023-03-31 22:56:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:33,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:56:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224600552] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:56:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074963546] [2023-03-31 22:56:33,318 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-03-31 22:56:33,319 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:56:33,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:56:33,329 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:56:33,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:56:33,376 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:56:35,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:56:35,564 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:56:37,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '249#(and (= main_~head~0.offset 0) (<= 100 (select (select |#memory_int| main_~m~0.base) 0)) (= main_~m~0.offset 0) (not (= (select (select |#memory_int| main_~m~0.base) 0) 100)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:56:37,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:56:37,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:56:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 18 [2023-03-31 22:56:37,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126231558] [2023-03-31 22:56:37,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:56:37,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-03-31 22:56:37,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-03-31 22:56:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=689, Unknown=12, NotChecked=0, Total=812 [2023-03-31 22:56:37,345 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:38,195 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-03-31 22:56:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 22:56:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 22:56:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:38,196 INFO L225 Difference]: With dead ends: 29 [2023-03-31 22:56:38,196 INFO L226 Difference]: Without dead ends: 16 [2023-03-31 22:56:38,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=185, Invalid=1056, Unknown=19, NotChecked=0, Total=1260 [2023-03-31 22:56:38,197 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:38,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 88 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 3 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 22:56:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-03-31 22:56:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-03-31 22:56:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-03-31 22:56:38,201 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2023-03-31 22:56:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:38,201 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-03-31 22:56:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-03-31 22:56:38,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:56:38,202 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:38,202 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:38,208 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 22:56:38,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:56:38,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:38,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1253159849, now seen corresponding path program 1 times [2023-03-31 22:56:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863014776] [2023-03-31 22:56:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:38,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:38,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863014776] [2023-03-31 22:56:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863014776] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:56:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406996474] [2023-03-31 22:56:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:56:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:56:38,622 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 22:56:38,625 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 22:56:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:38,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 22 conjunts are in the unsatisfiable core [2023-03-31 22:56:38,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:56:38,771 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 22:56:38,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-03-31 22:56:38,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 22:56:38,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 22:56:38,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:38,895 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-03-31 22:56:38,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-03-31 22:56:38,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 22:56:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:38,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:56:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406996474] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:56:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [474983834] [2023-03-31 22:56:39,142 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-03-31 22:56:39,142 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:56:39,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:56:39,142 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:56:39,142 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:56:39,161 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:56:39,410 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:56:39,414 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:56:39,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '435#(and (= main_~head~0.offset 0) (<= 100 (select (select |#memory_int| main_~m~0.base) 0)) (= main_~head~0.base main_~list~0.base) (= main_~m~0.offset 0) (= main_~list~0.offset 0) (not (= (select (select |#memory_int| main_~m~0.base) 0) 100)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:56:39,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:56:39,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:56:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 12 [2023-03-31 22:56:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726271834] [2023-03-31 22:56:39,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:56:39,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 22:56:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 22:56:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-03-31 22:56:39,674 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:39,739 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-03-31 22:56:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:56:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 22:56:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:39,739 INFO L225 Difference]: With dead ends: 16 [2023-03-31 22:56:39,740 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 22:56:39,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2023-03-31 22:56:39,741 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:39,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:56:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 22:56:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 22:56:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 22:56:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 22:56:39,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2023-03-31 22:56:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:39,742 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 22:56:39,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 22:56:39,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 22:56:39,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:56:39,754 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 22:56:39,945 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,SelfDestructingSolverStorable3 [2023-03-31 22:56:39,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 22:56:40,005 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2023-03-31 22:56:40,005 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 13) no Hoare annotation was computed. [2023-03-31 22:56:40,005 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 75 79) no Hoare annotation was computed. [2023-03-31 22:56:40,005 INFO L899 garLoopResultBuilder]: For program point __bswap_32EXIT(lines 75 79) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point L601(line 601) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 576 602) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point L595-1(lines 595 599) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L895 garLoopResultBuilder]: At program point L595-3(lines 595 599) the Hoare annotation is: (<= (select (select |#memory_int| main_~m~0.base) main_~m~0.offset) 100) [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point L595-4(lines 595 599) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 576 602) the Hoare annotation is: true [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 601) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point L600(lines 600 601) no Hoare annotation was computed. [2023-03-31 22:56:40,006 INFO L899 garLoopResultBuilder]: For program point L600-2(lines 576 602) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L895 garLoopResultBuilder]: At program point L586-2(lines 584 593) the Hoare annotation is: (and (not (= main_~m~0.base main_~head~0.base)) (= (select (select |#memory_int| main_~m~0.base) main_~m~0.offset) 0) (not (= main_~m~0.base main_~list~0.base)) (= (select |#valid| main_~m~0.base) 1)) [2023-03-31 22:56:40,007 INFO L899 garLoopResultBuilder]: For program point L584-1(lines 584 593) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L899 garLoopResultBuilder]: For program point L584-3(lines 584 593) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 80 84) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L899 garLoopResultBuilder]: For program point __bswap_64EXIT(lines 80 84) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 22:56:40,007 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 22:56:40,007 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 22:56:40,010 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 22:56:40,011 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:56:40,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:56:40 BoogieIcfgContainer [2023-03-31 22:56:40,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:56:40,023 INFO L158 Benchmark]: Toolchain (without parser) took 10839.37ms. Allocated memory was 247.5MB in the beginning and 297.8MB in the end (delta: 50.3MB). Free memory was 208.2MB in the beginning and 220.5MB in the end (delta: -12.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-03-31 22:56:40,023 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 167.8MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:56:40,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.81ms. Allocated memory is still 247.5MB. Free memory was 207.9MB in the beginning and 191.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-03-31 22:56:40,024 INFO L158 Benchmark]: Boogie Preprocessor took 74.89ms. Allocated memory is still 247.5MB. Free memory was 191.3MB in the beginning and 188.6MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 22:56:40,024 INFO L158 Benchmark]: RCFGBuilder took 577.82ms. Allocated memory is still 247.5MB. Free memory was 188.6MB in the beginning and 163.1MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-03-31 22:56:40,024 INFO L158 Benchmark]: TraceAbstraction took 9803.04ms. Allocated memory was 247.5MB in the beginning and 297.8MB in the end (delta: 50.3MB). Free memory was 162.4MB in the beginning and 220.5MB in the end (delta: -58.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:56:40,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 167.8MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 378.81ms. Allocated memory is still 247.5MB. Free memory was 207.9MB in the beginning and 191.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.89ms. Allocated memory is still 247.5MB. Free memory was 191.3MB in the beginning and 188.6MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 577.82ms. Allocated memory is still 247.5MB. Free memory was 188.6MB in the beginning and 163.1MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 9803.04ms. Allocated memory was 247.5MB in the beginning and 297.8MB in the end (delta: 50.3MB). Free memory was 162.4MB in the beginning and 220.5MB in the end (delta: -58.1MB). There was no memory consumed. 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 - PositiveResult [Line: 601]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 160 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 41 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, InterpolantAutomatonStates: 22, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 11 NumberOfFragments, 32 HoareAnnotationTreeSize, 6 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 315 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 11 QuantifiedInterpolants, 1336 SizeOfPredicates, 37 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 584]: Loop Invariant Derived loop invariant: ((!(m == head) && unknown-#memory_int-unknown[m][m] == 0) && !(m == list)) && \valid[m] == 1 - InvariantResult [Line: 595]: Loop Invariant Derived loop invariant: unknown-#memory_int-unknown[m][m] <= 100 RESULT: Ultimate proved your program to be correct! [2023-03-31 22:56:40,053 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...