/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/heap-manipulation/tree-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:06:15,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:06:15,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:06:15,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:06:15,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:06:15,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:06:15,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:06:15,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:06:15,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:06:15,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:06:15,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:06:15,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:06:15,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:06:15,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:06:15,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:06:15,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:06:15,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:06:15,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:06:15,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:06:15,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:06:15,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:06:15,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:06:15,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:06:15,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:06:15,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 00:06:15,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 00:06:15,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 00:06:15,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 00:06:15,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 00:06:15,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 00:06:15,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:06:15,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:06:15,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:06:15,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:06:15,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:06:15,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:06:15,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:06:15,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:06:15,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:06:15,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:06:15,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:06:15,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:06:15,512 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:06:15,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:06:15,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:06:15,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:06:15,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:06:15,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:06:15,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:06:15,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:06:15,514 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:06:15,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:06:15,515 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:06:15,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:06:15,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:06:15,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:06:15,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:06:15,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:06:15,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:06:15,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:06:15,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:06:15,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:06:15,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:06:15,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:06:15,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:06:15,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:06:15,518 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:06:15,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:06:15,518 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:06:15,518 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:06:15,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:06:15,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:06:15,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:06:15,754 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:06:15,755 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:06:15,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-4.i [2023-03-31 00:06:16,812 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:06:17,067 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:06:17,068 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2023-03-31 00:06:17,083 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20451f7a5/73e5b6bb1922488f8fba44d9aeab2fd2/FLAG652dfc160 [2023-03-31 00:06:17,093 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20451f7a5/73e5b6bb1922488f8fba44d9aeab2fd2 [2023-03-31 00:06:17,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:06:17,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:06:17,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:06:17,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:06:17,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:06:17,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4195dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17, skipping insertion in model container [2023-03-31 00:06:17,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:06:17,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:06:17,305 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-manipulation/tree-4.i[22626,22639] [2023-03-31 00:06:17,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:06:17,333 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:06:17,366 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-manipulation/tree-4.i[22626,22639] [2023-03-31 00:06:17,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:06:17,404 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:06:17,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17 WrapperNode [2023-03-31 00:06:17,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:06:17,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:06:17,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:06:17,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:06:17,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:06:17,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:06:17,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:06:17,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:06:17,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (1/1) ... [2023-03-31 00:06:17,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:06:17,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:06:17,482 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 00:06:17,488 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 00:06:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:06:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:06:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:06:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 00:06:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 00:06:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-03-31 00:06:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-03-31 00:06:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2023-03-31 00:06:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2023-03-31 00:06:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:06:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 00:06:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 00:06:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 00:06:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 00:06:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 00:06:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 00:06:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 00:06:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 00:06:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 00:06:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 00:06:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 00:06:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 00:06:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 00:06:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 00:06:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 00:06:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 00:06:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 00:06:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 00:06:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 00:06:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 00:06:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 00:06:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 00:06:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 00:06:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 00:06:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 00:06:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-03-31 00:06:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-03-31 00:06:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 00:06:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:06:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2023-03-31 00:06:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 00:06:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 00:06:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:06:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2023-03-31 00:06:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:06:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:06:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:06:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:06:17,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:06:17,728 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:06:17,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:06:17,950 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:06:17,955 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:06:17,955 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-03-31 00:06:17,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:06:17 BoogieIcfgContainer [2023-03-31 00:06:17,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:06:17,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:06:17,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:06:17,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:06:17,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:06:17" (1/3) ... [2023-03-31 00:06:17,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155da73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:06:17, skipping insertion in model container [2023-03-31 00:06:17,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:06:17" (2/3) ... [2023-03-31 00:06:17,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155da73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:06:17, skipping insertion in model container [2023-03-31 00:06:17,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:06:17" (3/3) ... [2023-03-31 00:06:17,963 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-4.i [2023-03-31 00:06:17,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:06:17,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:06:18,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:06:18,027 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=PETRI_NET, 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;@151997ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:06:18,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:06:18,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 49 states have internal predecessors, (74), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 00:06:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 00:06:18,037 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:18,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:18,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:18,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1106866688, now seen corresponding path program 1 times [2023-03-31 00:06:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280823684] [2023-03-31 00:06:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:18,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:06:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:18,224 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 00:06:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280823684] [2023-03-31 00:06:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280823684] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:06:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305567244] [2023-03-31 00:06:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:18,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:06:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:06:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:06:18,260 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 49 states have internal predecessors, (74), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:18,548 INFO L93 Difference]: Finished difference Result 132 states and 207 transitions. [2023-03-31 00:06:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:06:18,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-03-31 00:06:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:18,558 INFO L225 Difference]: With dead ends: 132 [2023-03-31 00:06:18,559 INFO L226 Difference]: Without dead ends: 50 [2023-03-31 00:06:18,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:06:18,568 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 109 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:18,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 8 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:06:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-03-31 00:06:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2023-03-31 00:06:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:06:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2023-03-31 00:06:18,606 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 20 [2023-03-31 00:06:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:18,607 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-03-31 00:06:18,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2023-03-31 00:06:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 00:06:18,609 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:18,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:18,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:06:18,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:18,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2114736752, now seen corresponding path program 1 times [2023-03-31 00:06:18,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:18,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896799834] [2023-03-31 00:06:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:06:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:18,741 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 00:06:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:18,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896799834] [2023-03-31 00:06:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896799834] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 00:06:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980466316] [2023-03-31 00:06:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:06:18,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:06:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:06:18,745 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:18,939 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2023-03-31 00:06:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:06:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-03-31 00:06:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:18,942 INFO L225 Difference]: With dead ends: 77 [2023-03-31 00:06:18,942 INFO L226 Difference]: Without dead ends: 51 [2023-03-31 00:06:18,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:06:18,947 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 80 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:18,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 5 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:06:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-03-31 00:06:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2023-03-31 00:06:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 36 states have internal predecessors, (43), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:06:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2023-03-31 00:06:18,956 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 21 [2023-03-31 00:06:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:18,956 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2023-03-31 00:06:18,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2023-03-31 00:06:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 00:06:18,957 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:18,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:18,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:06:18,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:18,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1856571314, now seen corresponding path program 1 times [2023-03-31 00:06:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:18,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680016395] [2023-03-31 00:06:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:18,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:06:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:19,202 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 00:06:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680016395] [2023-03-31 00:06:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680016395] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 00:06:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941621526] [2023-03-31 00:06:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:19,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 00:06:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 00:06:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:06:19,206 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:19,503 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2023-03-31 00:06:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 00:06:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-03-31 00:06:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:19,504 INFO L225 Difference]: With dead ends: 88 [2023-03-31 00:06:19,505 INFO L226 Difference]: Without dead ends: 47 [2023-03-31 00:06:19,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-03-31 00:06:19,506 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 82 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:19,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 11 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:06:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-03-31 00:06:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-03-31 00:06:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 38 states have internal predecessors, (44), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:06:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2023-03-31 00:06:19,513 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 21 [2023-03-31 00:06:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:19,513 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2023-03-31 00:06:19,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2023-03-31 00:06:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 00:06:19,514 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:19,514 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:06:19,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:19,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1736102567, now seen corresponding path program 1 times [2023-03-31 00:06:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520256173] [2023-03-31 00:06:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:06:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:06:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520256173] [2023-03-31 00:06:19,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520256173] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:19,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:19,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 00:06:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518788829] [2023-03-31 00:06:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:06:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:06:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:06:19,608 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:19,737 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2023-03-31 00:06:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:06:19,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-03-31 00:06:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:19,739 INFO L225 Difference]: With dead ends: 72 [2023-03-31 00:06:19,739 INFO L226 Difference]: Without dead ends: 48 [2023-03-31 00:06:19,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:06:19,741 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 65 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:19,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 5 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:06:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-03-31 00:06:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-03-31 00:06:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 38 states have internal predecessors, (43), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:06:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2023-03-31 00:06:19,748 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 27 [2023-03-31 00:06:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:19,748 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2023-03-31 00:06:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-03-31 00:06:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 00:06:19,749 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:19,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:06:19,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:19,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1504335456, now seen corresponding path program 1 times [2023-03-31 00:06:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161474048] [2023-03-31 00:06:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:19,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:06:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 00:06:20,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161474048] [2023-03-31 00:06:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161474048] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 00:06:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898975304] [2023-03-31 00:06:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 00:06:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 00:06:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-03-31 00:06:20,353 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:20,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:20,676 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2023-03-31 00:06:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 00:06:20,676 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-03-31 00:06:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:20,677 INFO L225 Difference]: With dead ends: 93 [2023-03-31 00:06:20,677 INFO L226 Difference]: Without dead ends: 59 [2023-03-31 00:06:20,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-03-31 00:06:20,678 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 136 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:20,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 17 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:06:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-03-31 00:06:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2023-03-31 00:06:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 6 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:06:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-03-31 00:06:20,683 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2023-03-31 00:06:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:20,683 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-03-31 00:06:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:06:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-03-31 00:06:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-03-31 00:06:20,684 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:20,687 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:20,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 00:06:20,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:20,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1787082030, now seen corresponding path program 1 times [2023-03-31 00:06:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56828013] [2023-03-31 00:06:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:06:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:06:28,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:28,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56828013] [2023-03-31 00:06:28,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56828013] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:06:28,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54112133] [2023-03-31 00:06:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:28,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:06:28,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:06:28,642 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 00:06:28,650 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 00:06:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:28,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 166 conjunts are in the unsatisfiable core [2023-03-31 00:06:28,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:06:28,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:06:29,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:06:29,050 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:06:29,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 15 [2023-03-31 00:06:29,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:06:29,486 INFO L321 Elim1Store]: treesize reduction 140, result has 10.8 percent of original size [2023-03-31 00:06:29,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 32320 treesize of output 21704 [2023-03-31 00:06:31,165 INFO L321 Elim1Store]: treesize reduction 904, result has 7.9 percent of original size [2023-03-31 00:06:31,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 779 treesize of output 1400 [2023-03-31 00:06:31,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:06:31,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:06:31,278 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-03-31 00:06:31,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 331 treesize of output 351 [2023-03-31 00:06:31,402 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2023-03-31 00:06:31,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 196 [2023-03-31 00:06:31,471 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 25 treesize of output 21 [2023-03-31 00:06:31,516 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 45 treesize of output 41 [2023-03-31 00:06:31,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 128 [2023-03-31 00:06:32,639 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-03-31 00:06:32,639 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 2 case distinctions, treesize of input 33 treesize of output 9 [2023-03-31 00:06:32,893 INFO L321 Elim1Store]: treesize reduction 256, result has 18.5 percent of original size [2023-03-31 00:06:32,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 387 treesize of output 524 [2023-03-31 00:06:32,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 60 [2023-03-31 00:06:33,005 INFO L321 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2023-03-31 00:06:33,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 103 treesize of output 76 [2023-03-31 00:06:33,094 INFO L321 Elim1Store]: treesize reduction 67, result has 36.8 percent of original size [2023-03-31 00:06:33,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 366 treesize of output 318 [2023-03-31 00:06:33,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 39 treesize of output 62 [2023-03-31 00:06:33,940 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-03-31 00:06:33,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 00:06:34,147 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,SelfDestructingSolverStorable5 [2023-03-31 00:06:34,148 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:352) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:296) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:296) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:296) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:282) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-03-31 00:06:34,151 INFO L158 Benchmark]: Toolchain (without parser) took 17055.19ms. Allocated memory was 267.4MB in the beginning and 750.8MB in the end (delta: 483.4MB). Free memory was 229.3MB in the beginning and 400.7MB in the end (delta: -171.4MB). Peak memory consumption was 452.4MB. Max. memory is 8.0GB. [2023-03-31 00:06:34,151 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 222.3MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:06:34,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.79ms. Allocated memory is still 267.4MB. Free memory was 229.3MB in the beginning and 211.7MB in the end (delta: 17.6MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 00:06:34,151 INFO L158 Benchmark]: Boogie Preprocessor took 47.95ms. Allocated memory is still 267.4MB. Free memory was 211.7MB in the beginning and 209.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:06:34,151 INFO L158 Benchmark]: RCFGBuilder took 502.45ms. Allocated memory is still 267.4MB. Free memory was 209.1MB in the beginning and 181.3MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-03-31 00:06:34,152 INFO L158 Benchmark]: TraceAbstraction took 16192.30ms. Allocated memory was 267.4MB in the beginning and 750.8MB in the end (delta: 483.4MB). Free memory was 180.7MB in the beginning and 400.7MB in the end (delta: -220.0MB). Peak memory consumption was 404.2MB. Max. memory is 8.0GB. [2023-03-31 00:06:34,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 222.3MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.79ms. Allocated memory is still 267.4MB. Free memory was 229.3MB in the beginning and 211.7MB in the end (delta: 17.6MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.95ms. Allocated memory is still 267.4MB. Free memory was 211.7MB in the beginning and 209.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 502.45ms. Allocated memory is still 267.4MB. Free memory was 209.1MB in the beginning and 181.3MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 16192.30ms. Allocated memory was 267.4MB in the beginning and 750.8MB in the end (delta: 483.4MB). Free memory was 180.7MB in the beginning and 400.7MB in the end (delta: -220.0MB). Peak memory consumption was 404.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-03-31 00:06:34,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...