/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/list-properties/list_search-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:48:21,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:48:21,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:48:21,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:48:21,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:48:21,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:48:21,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:48:21,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:48:21,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:48:21,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:48:21,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:48:21,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:48:21,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:48:21,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:48:21,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:48:21,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:48:21,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:48:21,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:48:21,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:48:21,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:48:21,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:48:21,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:48:21,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:48:21,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:48:21,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:48:21,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:48:21,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:48:21,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:48:21,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:48:21,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:48:21,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:48:21,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:48:21,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:48:21,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:48:21,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:48:21,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:48:21,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:48:21,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:48:21,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:48:21,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:48:21,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:48:21,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:48:21,362 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:48:21,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:48:21,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:48:21,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:48:21,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:48:21,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:48:21,363 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:48:21,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:48:21,364 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:48:21,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:48:21,364 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:48:21,364 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:48:21,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:48:21,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:48:21,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:48:21,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:48:21,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:48:21,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:48:21,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:48:21,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:48:21,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:48:21,578 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:48:21,579 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:48:21,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-2.i [2023-03-31 22:48:22,752 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:48:22,986 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:48:22,987 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i [2023-03-31 22:48:22,999 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07ba9998/2b6ba47a6890470b9e0c442b4bb4043f/FLAG5c3e010ef [2023-03-31 22:48:23,010 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07ba9998/2b6ba47a6890470b9e0c442b4bb4043f [2023-03-31 22:48:23,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:48:23,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:48:23,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:48:23,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:48:23,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:48:23,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2172e2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23, skipping insertion in model container [2023-03-31 22:48:23,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:48:23,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:48:23,212 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/list-properties/list_search-2.i[813,826] [2023-03-31 22:48:23,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:48:23,407 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:48:23,418 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/list-properties/list_search-2.i[813,826] [2023-03-31 22:48:23,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:48:23,501 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:48:23,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23 WrapperNode [2023-03-31 22:48:23,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:48:23,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:48:23,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:48:23,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:48:23,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:48:23,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:48:23,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:48:23,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:48:23,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (1/1) ... [2023-03-31 22:48:23,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:48:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:48:23,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:48:23,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:48:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:48:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:48:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2023-03-31 22:48:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:48:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:48:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2023-03-31 22:48:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2023-03-31 22:48:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2023-03-31 22:48:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2023-03-31 22:48:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2023-03-31 22:48:23,654 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2023-03-31 22:48:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2023-03-31 22:48:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2023-03-31 22:48:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2023-03-31 22:48:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2023-03-31 22:48:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2023-03-31 22:48:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2023-03-31 22:48:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-03-31 22:48:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2023-03-31 22:48:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2023-03-31 22:48:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2023-03-31 22:48:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2023-03-31 22:48:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2023-03-31 22:48:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2023-03-31 22:48:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2023-03-31 22:48:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2023-03-31 22:48:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2023-03-31 22:48:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2023-03-31 22:48:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:48:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:48:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:48:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:48:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2023-03-31 22:48:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:48:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:48:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:48:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:48:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:48:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:48:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:48:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:48:23,926 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:48:23,927 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:48:24,118 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:48:24,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:48:24,176 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-03-31 22:48:24,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:48:24 BoogieIcfgContainer [2023-03-31 22:48:24,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:48:24,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:48:24,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:48:24,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:48:24,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:48:23" (1/3) ... [2023-03-31 22:48:24,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bea98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:48:24, skipping insertion in model container [2023-03-31 22:48:24,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:48:23" (2/3) ... [2023-03-31 22:48:24,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bea98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:48:24, skipping insertion in model container [2023-03-31 22:48:24,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:48:24" (3/3) ... [2023-03-31 22:48:24,183 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2023-03-31 22:48:24,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:48:24,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:48:24,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:48:24,239 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e2b60a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:48:24,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:48:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 22:48:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-31 22:48:24,248 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:24,248 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:48:24,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:24,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1333333873, now seen corresponding path program 1 times [2023-03-31 22:48:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:24,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203812034] [2023-03-31 22:48:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:24,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:48:24,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:24,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203812034] [2023-03-31 22:48:24,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203812034] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:48:24,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:48:24,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:48:24,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568629373] [2023-03-31 22:48:24,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:48:24,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:48:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:48:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:48:24,555 INFO L87 Difference]: Start difference. First operand has 43 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 22:48:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:24,618 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2023-03-31 22:48:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:48:24,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 32 [2023-03-31 22:48:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:24,625 INFO L225 Difference]: With dead ends: 66 [2023-03-31 22:48:24,626 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 22:48:24,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:48:24,631 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:24,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:48:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 22:48:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-03-31 22:48:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-03-31 22:48:24,656 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2023-03-31 22:48:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:24,657 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-03-31 22:48:24,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 22:48:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-03-31 22:48:24,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-03-31 22:48:24,659 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:24,659 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:48:24,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:48:24,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:24,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash -953353021, now seen corresponding path program 1 times [2023-03-31 22:48:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:24,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980270758] [2023-03-31 22:48:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 22:48:24,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:24,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980270758] [2023-03-31 22:48:24,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980270758] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:48:24,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:48:24,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:48:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212045392] [2023-03-31 22:48:24,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:48:24,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:48:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:48:24,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:48:24,866 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 22:48:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:24,924 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-03-31 22:48:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:48:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 33 [2023-03-31 22:48:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:24,926 INFO L225 Difference]: With dead ends: 42 [2023-03-31 22:48:24,926 INFO L226 Difference]: Without dead ends: 30 [2023-03-31 22:48:24,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:48:24,927 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 47 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:48:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-03-31 22:48:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-03-31 22:48:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-03-31 22:48:24,933 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 33 [2023-03-31 22:48:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:24,933 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-03-31 22:48:24,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 22:48:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-03-31 22:48:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-31 22:48:24,935 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:24,935 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:48:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:48:24,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:24,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2090542030, now seen corresponding path program 1 times [2023-03-31 22:48:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:24,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292116403] [2023-03-31 22:48:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 22:48:25,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292116403] [2023-03-31 22:48:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292116403] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:48:25,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:48:25,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 22:48:25,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701658499] [2023-03-31 22:48:25,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:48:25,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 22:48:25,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:25,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 22:48:25,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-03-31 22:48:25,453 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 22:48:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:25,682 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-03-31 22:48:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 22:48:25,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-03-31 22:48:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:25,683 INFO L225 Difference]: With dead ends: 40 [2023-03-31 22:48:25,683 INFO L226 Difference]: Without dead ends: 32 [2023-03-31 22:48:25,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-03-31 22:48:25,684 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:25,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 141 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:48:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-03-31 22:48:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-03-31 22:48:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-03-31 22:48:25,688 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 34 [2023-03-31 22:48:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:25,689 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-03-31 22:48:25,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 22:48:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-03-31 22:48:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-03-31 22:48:25,689 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:25,689 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-03-31 22:48:25,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:48:25,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:25,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1897580371, now seen corresponding path program 1 times [2023-03-31 22:48:25,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:25,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250021775] [2023-03-31 22:48:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:25,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:48:26,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:26,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250021775] [2023-03-31 22:48:26,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250021775] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:48:26,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294895964] [2023-03-31 22:48:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:26,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:26,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:48:26,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:48:26,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:48:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:26,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 25 conjunts are in the unsatisfiable core [2023-03-31 22:48:26,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:48:26,542 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:26,547 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 6 treesize of output 5 [2023-03-31 22:48:26,551 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 6 treesize of output 5 [2023-03-31 22:48:26,603 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 22:48:26,604 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:26,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 11 [2023-03-31 22:48:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:48:26,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:48:27,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:27,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2023-03-31 22:48:27,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:27,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2023-03-31 22:48:27,171 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 9 treesize of output 1 [2023-03-31 22:48:27,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:27,178 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 1 case distinctions, treesize of input 7 treesize of output 6 [2023-03-31 22:48:27,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 22:48:27,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-03-31 22:48:27,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:27,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 109 [2023-03-31 22:48:27,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:27,246 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 88 [2023-03-31 22:48:27,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:27,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 97 [2023-03-31 22:48:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:48:27,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294895964] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:48:27,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338081857] [2023-03-31 22:48:27,336 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-03-31 22:48:27,336 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:48:27,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:48:27,342 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:48:27,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:48:27,403 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 31 for LOIs [2023-03-31 22:48:27,968 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 17 for LOIs [2023-03-31 22:48:28,039 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 22:48:28,047 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 29 for LOIs [2023-03-31 22:48:28,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-03-31 22:48:28,066 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:48:28,855 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '659#(and (= ~head~0.offset 0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~temp~0.base_BEFORE_CALL_1 Int) (v_main_~temp~0.offset_BEFORE_CALL_1 Int)) (not (= 2 (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_1) v_main_~temp~0.offset_BEFORE_CALL_1)))) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:48:28,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:48:28,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:48:28,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-03-31 22:48:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061785394] [2023-03-31 22:48:28,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:48:28,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 22:48:28,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 22:48:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2023-03-31 22:48:28,858 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 12 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 22:48:29,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:29,057 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-03-31 22:48:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 22:48:29,057 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 36 [2023-03-31 22:48:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:29,058 INFO L225 Difference]: With dead ends: 49 [2023-03-31 22:48:29,058 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 22:48:29,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=1446, Unknown=0, NotChecked=0, Total=1640 [2023-03-31 22:48:29,059 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:29,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 46 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:48:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 22:48:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-03-31 22:48:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-03-31 22:48:29,064 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 36 [2023-03-31 22:48:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:29,064 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-03-31 22:48:29,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 22:48:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-03-31 22:48:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-03-31 22:48:29,065 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:29,065 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:48:29,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:48:29,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:29,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:29,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash -864636478, now seen corresponding path program 2 times [2023-03-31 22:48:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096839078] [2023-03-31 22:48:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-31 22:48:29,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096839078] [2023-03-31 22:48:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096839078] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:48:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854955617] [2023-03-31 22:48:29,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 22:48:29,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:29,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:48:29,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:48:29,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:48:30,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-03-31 22:48:30,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 22:48:30,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 50 conjunts are in the unsatisfiable core [2023-03-31 22:48:30,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:48:30,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-03-31 22:48:30,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-03-31 22:48:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 22:48:30,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:48:30,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 10 [2023-03-31 22:48:30,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-03-31 22:48:30,964 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-03-31 22:48:30,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-03-31 22:48:30,973 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-03-31 22:48:30,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-03-31 22:48:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:48:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854955617] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:48:31,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1824703859] [2023-03-31 22:48:31,019 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-03-31 22:48:31,019 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:48:31,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:48:31,019 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:48:31,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:48:31,035 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 31 for LOIs [2023-03-31 22:48:31,411 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 17 for LOIs [2023-03-31 22:48:31,461 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 22:48:31,466 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 29 for LOIs [2023-03-31 22:48:31,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-03-31 22:48:31,498 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:48:32,733 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1080#(and (= ~head~0.offset 0) (exists ((v_main_~temp~0.offset_BEFORE_CALL_2 Int) (v_main_~temp~0.base_BEFORE_CALL_2 Int)) (not (= (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_2) v_main_~temp~0.offset_BEFORE_CALL_2) 2))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:48:32,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:48:32,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:48:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 36 [2023-03-31 22:48:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342078452] [2023-03-31 22:48:32,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:48:32,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-03-31 22:48:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-03-31 22:48:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3065, Unknown=0, NotChecked=0, Total=3306 [2023-03-31 22:48:32,736 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 states have internal predecessors, (47), 6 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-31 22:48:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:33,663 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-03-31 22:48:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-31 22:48:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 states have internal predecessors, (47), 6 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 37 [2023-03-31 22:48:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:33,666 INFO L225 Difference]: With dead ends: 45 [2023-03-31 22:48:33,666 INFO L226 Difference]: Without dead ends: 37 [2023-03-31 22:48:33,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=517, Invalid=5489, Unknown=0, NotChecked=0, Total=6006 [2023-03-31 22:48:33,669 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:33,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 122 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 22:48:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-03-31 22:48:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-03-31 22:48:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-03-31 22:48:33,679 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 37 [2023-03-31 22:48:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:33,679 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-03-31 22:48:33,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 states have internal predecessors, (47), 6 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-31 22:48:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-03-31 22:48:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-03-31 22:48:33,680 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:33,680 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:48:33,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:48:33,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:33,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:33,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1444223393, now seen corresponding path program 3 times [2023-03-31 22:48:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:33,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651245080] [2023-03-31 22:48:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 22:48:35,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:35,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651245080] [2023-03-31 22:48:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651245080] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:48:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684104999] [2023-03-31 22:48:35,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 22:48:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:48:35,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:48:35,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 22:48:35,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 22:48:35,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 22:48:35,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 96 conjunts are in the unsatisfiable core [2023-03-31 22:48:35,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:48:35,370 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:35,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:35,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:35,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:35,439 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:35,444 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 6 treesize of output 5 [2023-03-31 22:48:35,447 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 9 treesize of output 8 [2023-03-31 22:48:35,449 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 8 treesize of output 7 [2023-03-31 22:48:35,454 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:35,457 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 6 treesize of output 5 [2023-03-31 22:48:35,461 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:35,466 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 6 treesize of output 5 [2023-03-31 22:48:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:48:35,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2023-03-31 22:48:35,569 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 22:48:35,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 22:48:36,102 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 22:48:36,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 27 [2023-03-31 22:48:36,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-03-31 22:48:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:48:36,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:48:37,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:37,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 67 [2023-03-31 22:48:37,768 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-03-31 22:48:37,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 47 [2023-03-31 22:48:37,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:37,794 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 27 treesize of output 31 [2023-03-31 22:48:37,848 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 22:48:37,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-03-31 22:48:37,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:37,859 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2023-03-31 22:48:37,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:37,872 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2023-03-31 22:48:37,898 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 22:48:37,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-03-31 22:48:37,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-03-31 22:48:37,940 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 22:48:37,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:37,961 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-03-31 22:48:37,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:37,972 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-03-31 22:48:37,977 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 22:48:37,978 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 22:48:37,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-03-31 22:48:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684104999] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:48:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057252272] [2023-03-31 22:48:38,096 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-03-31 22:48:38,096 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:48:38,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:48:38,097 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:48:38,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:48:38,121 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 31 for LOIs [2023-03-31 22:48:38,450 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 17 for LOIs [2023-03-31 22:48:38,499 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 22:48:38,504 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 29 for LOIs [2023-03-31 22:48:38,517 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-03-31 22:48:38,520 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:48:39,814 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1485#(and (= ~head~0.offset 0) (exists ((v_main_~temp~0.offset_BEFORE_CALL_3 Int) (v_main_~temp~0.base_BEFORE_CALL_3 Int)) (not (= 2 (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_3) v_main_~temp~0.offset_BEFORE_CALL_3)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:48:39,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:48:39,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 22:48:39,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 34 [2023-03-31 22:48:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380631550] [2023-03-31 22:48:39,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 22:48:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-03-31 22:48:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-03-31 22:48:39,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3909, Unknown=0, NotChecked=0, Total=4160 [2023-03-31 22:48:39,817 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 34 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 6 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-31 22:48:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:41,007 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2023-03-31 22:48:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-31 22:48:41,008 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 6 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 39 [2023-03-31 22:48:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:41,009 INFO L225 Difference]: With dead ends: 49 [2023-03-31 22:48:41,009 INFO L226 Difference]: Without dead ends: 41 [2023-03-31 22:48:41,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1944 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=568, Invalid=6742, Unknown=0, NotChecked=0, Total=7310 [2023-03-31 22:48:41,012 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 88 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:41,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 138 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 22:48:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-03-31 22:48:41,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-03-31 22:48:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-03-31 22:48:41,024 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 39 [2023-03-31 22:48:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:41,024 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-03-31 22:48:41,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 6 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-31 22:48:41,024 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-03-31 22:48:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-03-31 22:48:41,027 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:41,027 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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 22:48:41,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 22:48:41,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:41,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:41,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash -239532608, now seen corresponding path program 4 times [2023-03-31 22:48:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:41,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67173578] [2023-03-31 22:48:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:41,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-03-31 22:48:41,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67173578] [2023-03-31 22:48:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67173578] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:48:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251228693] [2023-03-31 22:48:41,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-31 22:48:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:48:41,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:48:41,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 22:48:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:42,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 59 conjunts are in the unsatisfiable core [2023-03-31 22:48:42,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:48:42,271 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 6 treesize of output 5 [2023-03-31 22:48:42,273 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:42,276 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 6 treesize of output 5 [2023-03-31 22:48:42,281 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:42,284 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 6 treesize of output 5 [2023-03-31 22:48:42,289 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 6 treesize of output 5 [2023-03-31 22:48:42,292 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 6 treesize of output 5 [2023-03-31 22:48:42,296 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 6 treesize of output 5 [2023-03-31 22:48:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:48:42,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:48:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:48:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251228693] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:48:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2103186828] [2023-03-31 22:48:43,320 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-03-31 22:48:43,320 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:48:43,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:48:43,321 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:48:43,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:48:43,337 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 31 for LOIs [2023-03-31 22:48:43,682 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 17 for LOIs [2023-03-31 22:48:43,729 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 22:48:43,734 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 29 for LOIs [2023-03-31 22:48:43,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-03-31 22:48:43,750 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:48:44,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1962#(and (= ~head~0.offset 0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~temp~0.base_BEFORE_CALL_4 Int) (v_main_~temp~0.offset_BEFORE_CALL_4 Int)) (not (= (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_4) v_main_~temp~0.offset_BEFORE_CALL_4) 2))) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:48:44,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:48:44,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:48:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 33 [2023-03-31 22:48:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505759053] [2023-03-31 22:48:44,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:48:44,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-03-31 22:48:44,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:48:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-03-31 22:48:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2741, Unknown=0, NotChecked=0, Total=2970 [2023-03-31 22:48:44,842 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 33 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 7 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-03-31 22:48:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:48:45,661 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2023-03-31 22:48:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 22:48:45,662 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 7 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 41 [2023-03-31 22:48:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:48:45,662 INFO L225 Difference]: With dead ends: 60 [2023-03-31 22:48:45,662 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 22:48:45,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=381, Invalid=3909, Unknown=0, NotChecked=0, Total=4290 [2023-03-31 22:48:45,664 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 131 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:48:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 119 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 22:48:45,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 22:48:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-03-31 22:48:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 22:48:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-03-31 22:48:45,670 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 41 [2023-03-31 22:48:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:48:45,670 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-03-31 22:48:45,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 7 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-03-31 22:48:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-03-31 22:48:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 22:48:45,672 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:48:45,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:48:45,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 22:48:45,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:45,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:48:45,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:48:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash 620818891, now seen corresponding path program 5 times [2023-03-31 22:48:45,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:48:45,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867810491] [2023-03-31 22:48:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:48:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:48:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:48:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 22:48:47,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:48:47,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867810491] [2023-03-31 22:48:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867810491] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:48:47,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738609143] [2023-03-31 22:48:47,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 22:48:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:48:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:48:47,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:48:47,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 22:48:48,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-03-31 22:48:48,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 22:48:48,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 128 conjunts are in the unsatisfiable core [2023-03-31 22:48:48,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:48:48,071 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:48,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:48,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:48,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:48,141 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:48,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:48,147 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:48,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:48:48,171 WARN L861 $PredicateComparison]: unable to prove that (and (let ((.cse1 (= |c_old(~head~0.base)| 0)) (.cse0 (= 0 |c_old(~head~0.offset)|))) (or (and (or (not .cse0) (not .cse1)) (= (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) 4) |c_old(~head~0.offset)|) (exists ((v_arrayElimArr_25 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| c_~head~0.base v_arrayElimArr_25)) (= |c_old(~head~0.base)| (select v_arrayElimArr_25 4))))) (and .cse1 (exists ((v_ArrVal_1230 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| c_~head~0.base v_ArrVal_1230) |c_#memory_$Pointer$.base|)) .cse0))) (= c_~head~0.offset 0) (not (= c_~head~0.base 0)) (= (select |c_old(#valid)| c_~head~0.base) 0) (= |c_#valid| (store |c_old(#valid)| c_~head~0.base 1))) is different from true [2023-03-31 22:48:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:48:48,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2023-03-31 22:48:48,195 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-03-31 22:48:48,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-03-31 22:48:48,276 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 6 treesize of output 5 [2023-03-31 22:48:48,281 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 6 treesize of output 5 [2023-03-31 22:48:48,284 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:48,291 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-03-31 22:48:48,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:48:48,391 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-03-31 22:48:48,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 50 [2023-03-31 22:48:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:48:48,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-03-31 22:48:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:48:48,411 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-03-31 22:48:48,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-03-31 22:48:49,110 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-03-31 22:48:49,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 48 [2023-03-31 22:48:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2023-03-31 22:48:49,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:48:50,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-03-31 22:48:50,429 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 9 treesize of output 7 [2023-03-31 22:48:50,636 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 22:48:50,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:50,694 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2023-03-31 22:48:50,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:50,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 68 [2023-03-31 22:48:50,769 INFO L321 Elim1Store]: treesize reduction 143, result has 47.2 percent of original size [2023-03-31 22:48:50,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 210 [2023-03-31 22:48:50,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:50,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 64 [2023-03-31 22:48:50,927 INFO L321 Elim1Store]: treesize reduction 143, result has 47.2 percent of original size [2023-03-31 22:48:50,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 210 [2023-03-31 22:48:51,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:51,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2023-03-31 22:48:51,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:51,052 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2023-03-31 22:48:51,129 INFO L321 Elim1Store]: treesize reduction 143, result has 47.2 percent of original size [2023-03-31 22:48:51,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 210 [2023-03-31 22:48:51,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:51,192 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 49 [2023-03-31 22:48:51,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:51,203 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-03-31 22:48:51,271 INFO L321 Elim1Store]: treesize reduction 132, result has 53.7 percent of original size [2023-03-31 22:48:51,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 188 treesize of output 271 [2023-03-31 22:48:51,436 INFO L321 Elim1Store]: treesize reduction 34, result has 60.9 percent of original size [2023-03-31 22:48:51,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 275 treesize of output 294 [2023-03-31 22:48:51,679 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 50 treesize of output 46 [2023-03-31 22:48:51,697 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 50 treesize of output 46 [2023-03-31 22:48:51,716 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 50 treesize of output 46 [2023-03-31 22:48:51,767 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 6 treesize of output 4 [2023-03-31 22:48:51,775 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 6 treesize of output 4 [2023-03-31 22:48:51,786 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 6 treesize of output 4 [2023-03-31 22:48:51,816 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 22:48:51,841 INFO L321 Elim1Store]: treesize reduction 29, result has 56.7 percent of original size [2023-03-31 22:48:51,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 243 treesize of output 243 [2023-03-31 22:48:51,918 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 6 treesize of output 4 [2023-03-31 22:48:52,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:52,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2023-03-31 22:48:52,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:52,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 233 [2023-03-31 22:48:52,219 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:48:52,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 396 treesize of output 390 [2023-03-31 22:48:52,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2023-03-31 22:48:52,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4