/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:09:00,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:09:00,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:09:00,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:09:00,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:09:00,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:09:00,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:09:00,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:09:00,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:09:00,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:09:00,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:09:00,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:09:00,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:09:00,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:09:00,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:09:00,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:09:00,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:09:00,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:09:00,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:09:00,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:09:00,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:09:00,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:09:00,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:09:00,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:09:00,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 00:09:00,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 00:09:00,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 00:09:00,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 00:09:00,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 00:09:00,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 00:09:00,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:09:00,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:09:00,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:09:00,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:09:00,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:09:00,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:09:00,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:09:00,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:09:00,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:09:00,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:09:00,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:09:00,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:09:00,406 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:09:00,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:09:00,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:09:00,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:09:00,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:09:00,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:09:00,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:09:00,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:09:00,408 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:09:00,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:09:00,409 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:09:00,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:09:00,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:09:00,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:09:00,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:09:00,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:09:00,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:09:00,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:09:00,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:09:00,411 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:09:00,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:09:00,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:09:00,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:09:00,782 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:09:00,782 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:09:00,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2023-03-31 00:09:01,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:09:02,184 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:09:02,184 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2023-03-31 00:09:02,197 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a54a3e4e/5b1fc22699ca409f949c9de6122c7e72/FLAGed74e84b6 [2023-03-31 00:09:02,209 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a54a3e4e/5b1fc22699ca409f949c9de6122c7e72 [2023-03-31 00:09:02,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:09:02,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:09:02,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:09:02,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:09:02,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:09:02,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55281571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02, skipping insertion in model container [2023-03-31 00:09:02,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:09:02,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:09:02,484 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/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2023-03-31 00:09:02,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:09:02,500 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:09:02,543 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/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2023-03-31 00:09:02,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:09:02,563 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:09:02,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02 WrapperNode [2023-03-31 00:09:02,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:09:02,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:09:02,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:09:02,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:09:02,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:09:02,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:09:02,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:09:02,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:09:02,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (1/1) ... [2023-03-31 00:09:02,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:09:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:09:02,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 00:09:02,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 00:09:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:09:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:09:02,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:09:02,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 00:09:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 00:09:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 00:09:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 00:09:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 00:09:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 00:09:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 00:09:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 00:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 00:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 00:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 00:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 00:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 00:09:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 00:09:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 00:09:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 00:09:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 00:09:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 00:09:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 00:09:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:09:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 00:09:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:09:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:09:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:09:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:09:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:09:02,868 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:09:02,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:09:03,149 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:09:03,153 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:09:03,153 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-03-31 00:09:03,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:09:03 BoogieIcfgContainer [2023-03-31 00:09:03,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:09:03,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:09:03,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:09:03,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:09:03,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:09:02" (1/3) ... [2023-03-31 00:09:03,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb00328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:09:03, skipping insertion in model container [2023-03-31 00:09:03,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:09:02" (2/3) ... [2023-03-31 00:09:03,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb00328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:09:03, skipping insertion in model container [2023-03-31 00:09:03,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:09:03" (3/3) ... [2023-03-31 00:09:03,162 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2023-03-31 00:09:03,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:09:03,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:09:03,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:09:03,218 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70273974, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:09:03,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:09:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:09:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 00:09:03,228 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:03,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:03,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:03,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash -241894490, now seen corresponding path program 1 times [2023-03-31 00:09:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308433433] [2023-03-31 00:09:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:03,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:03,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308433433] [2023-03-31 00:09:03,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308433433] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:09:03,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:09:03,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 00:09:03,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148806353] [2023-03-31 00:09:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:09:03,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 00:09:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 00:09:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:09:03,500 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:03,583 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2023-03-31 00:09:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 00:09:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 00:09:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:03,590 INFO L225 Difference]: With dead ends: 55 [2023-03-31 00:09:03,591 INFO L226 Difference]: Without dead ends: 24 [2023-03-31 00:09:03,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:09:03,596 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:03,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 10 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:09:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-03-31 00:09:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-03-31 00:09:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-03-31 00:09:03,622 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2023-03-31 00:09:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:03,623 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-03-31 00:09:03,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-03-31 00:09:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 00:09:03,623 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:03,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:03,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:09:03,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:03,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1876793685, now seen corresponding path program 1 times [2023-03-31 00:09:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:03,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947094773] [2023-03-31 00:09:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:03,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:03,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:03,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:03,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947094773] [2023-03-31 00:09:03,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947094773] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:09:03,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:09:03,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 00:09:03,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285961065] [2023-03-31 00:09:03,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:09:03,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 00:09:03,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 00:09:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:09:03,987 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:04,287 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2023-03-31 00:09:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 00:09:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-03-31 00:09:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:04,290 INFO L225 Difference]: With dead ends: 56 [2023-03-31 00:09:04,290 INFO L226 Difference]: Without dead ends: 54 [2023-03-31 00:09:04,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-03-31 00:09:04,291 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 100 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:04,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 28 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:09:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-03-31 00:09:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 34. [2023-03-31 00:09:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2023-03-31 00:09:04,299 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2023-03-31 00:09:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:04,299 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2023-03-31 00:09:04,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2023-03-31 00:09:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 00:09:04,300 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:04,300 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:09:04,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:04,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1215595578, now seen corresponding path program 1 times [2023-03-31 00:09:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225480060] [2023-03-31 00:09:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:04,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225480060] [2023-03-31 00:09:04,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225480060] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:09:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257831645] [2023-03-31 00:09:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:04,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:09:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:09:04,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:09:04,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:09:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:04,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2023-03-31 00:09:04,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:09:04,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-03-31 00:09:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:04,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:09:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257831645] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:09:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 00:09:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-03-31 00:09:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133608049] [2023-03-31 00:09:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:09:04,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:09:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:09:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-03-31 00:09:04,963 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:05,029 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2023-03-31 00:09:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:09:05,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-03-31 00:09:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:05,031 INFO L225 Difference]: With dead ends: 51 [2023-03-31 00:09:05,031 INFO L226 Difference]: Without dead ends: 43 [2023-03-31 00:09:05,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-03-31 00:09:05,034 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:05,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 84 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:09:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-03-31 00:09:05,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2023-03-31 00:09:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-03-31 00:09:05,052 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 19 [2023-03-31 00:09:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:05,052 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-03-31 00:09:05,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-03-31 00:09:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 00:09:05,053 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:05,053 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:05,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 00:09:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:09:05,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:05,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 468320688, now seen corresponding path program 1 times [2023-03-31 00:09:05,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742284710] [2023-03-31 00:09:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:05,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742284710] [2023-03-31 00:09:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742284710] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:09:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33679536] [2023-03-31 00:09:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:05,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:09:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:09:05,877 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 00:09:05,883 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 00:09:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:06,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 57 conjunts are in the unsatisfiable core [2023-03-31 00:09:06,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:09:06,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:09:06,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:09:06,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-03-31 00:09:06,082 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 0 case distinctions, treesize of input 24 treesize of output 24 [2023-03-31 00:09:06,087 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 63 treesize of output 39 [2023-03-31 00:09:06,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:06,103 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-03-31 00:09:06,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 67 [2023-03-31 00:09:06,110 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 38 treesize of output 30 [2023-03-31 00:09:06,124 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:09:06,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2023-03-31 00:09:06,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 00:09:06,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 00:09:06,216 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-03-31 00:09:06,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-03-31 00:09:06,228 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:09:06,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-03-31 00:09:06,302 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 27 treesize of output 15 [2023-03-31 00:09:06,306 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 00:09:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:06,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:09:06,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:06,405 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 42 treesize of output 43 [2023-03-31 00:09:06,409 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 103 treesize of output 79 [2023-03-31 00:09:06,413 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 63 treesize of output 61 [2023-03-31 00:09:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33679536] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:09:06,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:09:06,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-03-31 00:09:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109890813] [2023-03-31 00:09:06,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:09:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 00:09:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 00:09:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-03-31 00:09:06,587 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:07,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:07,035 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2023-03-31 00:09:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 00:09:07,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-03-31 00:09:07,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:07,036 INFO L225 Difference]: With dead ends: 74 [2023-03-31 00:09:07,036 INFO L226 Difference]: Without dead ends: 72 [2023-03-31 00:09:07,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-03-31 00:09:07,037 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 236 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:07,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 32 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:09:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-03-31 00:09:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 42. [2023-03-31 00:09:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-03-31 00:09:07,044 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 19 [2023-03-31 00:09:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:07,044 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-03-31 00:09:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-03-31 00:09:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 00:09:07,044 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:07,045 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:07,064 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 00:09:07,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-31 00:09:07,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:07,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash -305519166, now seen corresponding path program 1 times [2023-03-31 00:09:07,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:07,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947987544] [2023-03-31 00:09:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947987544] [2023-03-31 00:09:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947987544] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:09:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256859484] [2023-03-31 00:09:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:09:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:09:07,509 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 00:09:07,572 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 00:09:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:07,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 49 conjunts are in the unsatisfiable core [2023-03-31 00:09:07,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:09:07,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-03-31 00:09:07,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:09:07,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-03-31 00:09:07,743 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 0 case distinctions, treesize of input 12 treesize of output 17 [2023-03-31 00:09:07,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:07,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-03-31 00:09:07,751 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 11 treesize of output 15 [2023-03-31 00:09:07,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:07,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-03-31 00:09:07,768 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:09:07,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-03-31 00:09:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:07,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:09:08,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:08,029 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 2 case distinctions, treesize of input 33 treesize of output 40 [2023-03-31 00:09:08,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:08,037 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 2 case distinctions, treesize of input 27 treesize of output 34 [2023-03-31 00:09:08,047 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 0 case distinctions, treesize of input 13 treesize of output 9 [2023-03-31 00:09:08,058 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 0 case distinctions, treesize of input 13 treesize of output 9 [2023-03-31 00:09:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:08,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256859484] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-31 00:09:08,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:09:08,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2023-03-31 00:09:08,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861545522] [2023-03-31 00:09:08,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:09:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 00:09:08,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 00:09:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-03-31 00:09:08,229 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:09,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-03-31 00:09:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:11,221 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2023-03-31 00:09:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 00:09:11,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-03-31 00:09:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:11,222 INFO L225 Difference]: With dead ends: 69 [2023-03-31 00:09:11,222 INFO L226 Difference]: Without dead ends: 56 [2023-03-31 00:09:11,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-03-31 00:09:11,223 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:11,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 101 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 5 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 00:09:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-03-31 00:09:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2023-03-31 00:09:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2023-03-31 00:09:11,229 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 20 [2023-03-31 00:09:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:11,229 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2023-03-31 00:09:11,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-03-31 00:09:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 00:09:11,229 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:11,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:11,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-31 00:09:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:09:11,435 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:11,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1399882355, now seen corresponding path program 1 times [2023-03-31 00:09:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:11,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002284980] [2023-03-31 00:09:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:11,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002284980] [2023-03-31 00:09:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002284980] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:09:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:09:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:09:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550620531] [2023-03-31 00:09:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:09:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:09:11,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:09:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:09:11,501 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:11,641 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2023-03-31 00:09:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:09:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-03-31 00:09:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:11,642 INFO L225 Difference]: With dead ends: 69 [2023-03-31 00:09:11,642 INFO L226 Difference]: Without dead ends: 60 [2023-03-31 00:09:11,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-03-31 00:09:11,643 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:11,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 22 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:09:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-03-31 00:09:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2023-03-31 00:09:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2023-03-31 00:09:11,650 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2023-03-31 00:09:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:11,650 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2023-03-31 00:09:11,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2023-03-31 00:09:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 00:09:11,651 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:11,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:11,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 00:09:11,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:11,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2085738315, now seen corresponding path program 1 times [2023-03-31 00:09:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479919657] [2023-03-31 00:09:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479919657] [2023-03-31 00:09:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479919657] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:09:11,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:09:11,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 00:09:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274469415] [2023-03-31 00:09:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:09:11,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 00:09:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:09:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 00:09:11,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:09:11,787 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:09:12,009 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-03-31 00:09:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 00:09:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-03-31 00:09:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:09:12,010 INFO L225 Difference]: With dead ends: 92 [2023-03-31 00:09:12,010 INFO L226 Difference]: Without dead ends: 71 [2023-03-31 00:09:12,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-03-31 00:09:12,011 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:09:12,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 32 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:09:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-03-31 00:09:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2023-03-31 00:09:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 47 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-03-31 00:09:12,018 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 21 [2023-03-31 00:09:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:09:12,019 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-03-31 00:09:12,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:09:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-03-31 00:09:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-03-31 00:09:12,019 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:09:12,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:09:12,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 00:09:12,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:09:12,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:09:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1705909127, now seen corresponding path program 1 times [2023-03-31 00:09:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:09:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790743304] [2023-03-31 00:09:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:09:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:12,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:09:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:12,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:09:12,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790743304] [2023-03-31 00:09:12,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790743304] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:09:12,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061087019] [2023-03-31 00:09:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:09:12,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:09:12,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:09:12,845 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 00:09:12,861 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 00:09:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:09:12,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 87 conjunts are in the unsatisfiable core [2023-03-31 00:09:13,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:09:13,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:09:13,031 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 0 case distinctions, treesize of input 141 treesize of output 108 [2023-03-31 00:09:13,060 INFO L321 Elim1Store]: treesize reduction 67, result has 20.2 percent of original size [2023-03-31 00:09:13,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 263 [2023-03-31 00:09:13,068 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 0 case distinctions, treesize of input 198 treesize of output 157 [2023-03-31 00:09:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,091 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-03-31 00:09:13,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 165 [2023-03-31 00:09:13,100 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 173 treesize of output 153 [2023-03-31 00:09:13,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 82 [2023-03-31 00:09:13,127 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-03-31 00:09:13,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 29 [2023-03-31 00:09:13,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,370 INFO L321 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-03-31 00:09:13,371 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 110 [2023-03-31 00:09:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,383 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 51 treesize of output 47 [2023-03-31 00:09:13,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2023-03-31 00:09:13,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:09:13,409 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:09:13,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-03-31 00:09:13,424 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 11 treesize of output 15 [2023-03-31 00:09:13,433 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 11 treesize of output 15 [2023-03-31 00:09:13,475 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 0 case distinctions, treesize of input 27 treesize of output 23 [2023-03-31 00:09:13,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 00:09:13,749 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:09:13,749 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 88 treesize of output 43 [2023-03-31 00:09:13,756 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-03-31 00:09:13,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2023-03-31 00:09:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:09:13,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:09:13,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:13,999 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 2 case distinctions, treesize of input 39 treesize of output 46 [2023-03-31 00:09:14,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:14,008 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 2 case distinctions, treesize of input 33 treesize of output 40 [2023-03-31 00:09:14,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:14,149 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 244 treesize of output 196 [2023-03-31 00:09:14,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:14,167 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 2371 treesize of output 2010 [2023-03-31 00:09:14,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:14,191 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 1218 treesize of output 906 [2023-03-31 00:09:14,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:14,235 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 8164 treesize of output 7419 [2023-03-31 00:09:14,280 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 560 treesize of output 520 [2023-03-31 00:09:14,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:14,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 548 treesize of output 392 [2023-03-31 00:09:14,603 INFO L321 Elim1Store]: treesize reduction 11, result has 96.4 percent of original size [2023-03-31 00:09:14,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 7435 treesize of output 7312 [2023-03-31 00:09:15,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:15,114 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 1661 treesize of output 1595 [2023-03-31 00:09:15,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:09:15,271 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 1589 treesize of output 1463 [2023-03-31 00:09:15,351 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 1471 treesize of output 1431 [2023-03-31 00:09:15,393 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 1431 treesize of output 1405 [2023-03-31 00:09:15,616 INFO L321 Elim1Store]: treesize reduction 8, result has 93.9 percent of original size [2023-03-31 00:09:15,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1486 treesize of output 1424 [2023-03-31 00:09:15,761 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 1313 treesize of output 1279 [2023-03-31 00:09:15,822 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 1239 treesize of output 1167 [2023-03-31 00:09:15,907 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 96 treesize of output 84