/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:28:12,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:28:12,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:28:12,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:28:12,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:28:12,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:28:12,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:28:12,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:28:12,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:28:12,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:28:12,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:28:12,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:28:12,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:28:12,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:28:12,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:28:12,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:28:12,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:28:12,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:28:12,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:28:12,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:28:12,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:28:12,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:28:12,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:28:12,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:28:12,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:28:12,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:28:12,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:28:12,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:28:12,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:28:12,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:28:12,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:28:12,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:28:12,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:28:12,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:28:12,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:28:12,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:28:12,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:28:12,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:28:12,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:28:12,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:28:12,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:28:12,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:28:12,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:28:12,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:28:12,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:28:12,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:28:12,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:28:12,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:28:12,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:28:12,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:28:12,514 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:28:12,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:28:12,515 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:28:12,516 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:28:12,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:28:12,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:28:12,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:28:12,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:28:12,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:28:12,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:28:12,517 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:28:12,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:28:12,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:28:12,517 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:28:12,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:28:12,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:28:12,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:28:12,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:28:12,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:12,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:28:12,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:28:12,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:28:12,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:28:12,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:28:12,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:28:12,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:28:12,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:28:12,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:28:12,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:28:12,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:28:12,950 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:28:12,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter.c [2022-10-16 17:28:13,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da95c3f1f/11db52a1b1ba437eb6d4b4961cb688b2/FLAGf97656a33 [2022-10-16 17:28:13,672 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:28:13,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c [2022-10-16 17:28:13,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da95c3f1f/11db52a1b1ba437eb6d4b4961cb688b2/FLAGf97656a33 [2022-10-16 17:28:13,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da95c3f1f/11db52a1b1ba437eb6d4b4961cb688b2 [2022-10-16 17:28:13,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:28:13,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:28:13,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:13,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:28:14,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:28:14,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:14,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fbeb101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14, skipping insertion in model container [2022-10-16 17:28:14,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:14,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:28:14,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:28:14,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2022-10-16 17:28:14,219 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:14,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:14,253 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:28:14,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2022-10-16 17:28:14,275 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:14,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:14,307 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:28:14,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14 WrapperNode [2022-10-16 17:28:14,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:14,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:14,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:28:14,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:28:14,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,360 INFO L138 Inliner]: procedures = 29, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2022-10-16 17:28:14,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:14,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:28:14,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:28:14,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:28:14,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:28:14,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:28:14,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:28:14,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:28:14,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (1/1) ... [2022-10-16 17:28:14,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:14,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:14,452 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) [2022-10-16 17:28:14,466 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 [2022-10-16 17:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 17:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 17:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:28:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure min [2022-10-16 17:28:14,520 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2022-10-16 17:28:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:28:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 17:28:14,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 17:28:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 17:28:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2022-10-16 17:28:14,521 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2022-10-16 17:28:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:28:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:28:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure size [2022-10-16 17:28:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2022-10-16 17:28:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:28:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:28:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-16 17:28:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-16 17:28:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2022-10-16 17:28:14,523 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2022-10-16 17:28:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:28:14,636 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:28:14,639 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:28:15,378 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:28:15,388 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:28:15,389 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 17:28:15,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:15 BoogieIcfgContainer [2022-10-16 17:28:15,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:28:15,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:28:15,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:28:15,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:28:15,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:28:13" (1/3) ... [2022-10-16 17:28:15,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3062d26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:15, skipping insertion in model container [2022-10-16 17:28:15,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:14" (2/3) ... [2022-10-16 17:28:15,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3062d26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:15, skipping insertion in model container [2022-10-16 17:28:15,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:15" (3/3) ... [2022-10-16 17:28:15,402 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2022-10-16 17:28:15,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:28:15,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:28:15,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:28:15,509 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42e93afa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:28:15,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:28:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 78 states have internal predecessors, (93), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-16 17:28:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:28:15,528 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:15,528 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:15,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:15,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1012013560, now seen corresponding path program 1 times [2022-10-16 17:28:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:15,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456607131] [2022-10-16 17:28:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:28:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:16,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:28:16,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:16,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456607131] [2022-10-16 17:28:16,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456607131] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:16,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957095825] [2022-10-16 17:28:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:16,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:16,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:16,377 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) [2022-10-16 17:28:16,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:28:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:16,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:16,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 17:28:16,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 17:28:16,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957095825] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:16,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:16,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2022-10-16 17:28:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686432753] [2022-10-16 17:28:16,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:16,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:28:16,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:16,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:28:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:28:16,713 INFO L87 Difference]: Start difference. First operand has 105 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 78 states have internal predecessors, (93), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:28:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:17,741 INFO L93 Difference]: Finished difference Result 262 states and 350 transitions. [2022-10-16 17:28:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:28:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 29 [2022-10-16 17:28:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:17,766 INFO L225 Difference]: With dead ends: 262 [2022-10-16 17:28:17,766 INFO L226 Difference]: Without dead ends: 169 [2022-10-16 17:28:17,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:28:17,776 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 158 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:17,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 664 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:28:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-10-16 17:28:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2022-10-16 17:28:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 95 states have internal predecessors, (105), 28 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (36), 29 states have call predecessors, (36), 28 states have call successors, (36) [2022-10-16 17:28:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2022-10-16 17:28:17,850 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 29 [2022-10-16 17:28:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:17,851 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2022-10-16 17:28:17,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:28:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2022-10-16 17:28:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:28:17,855 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:17,855 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:17,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 17:28:18,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1871941119, now seen corresponding path program 1 times [2022-10-16 17:28:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:18,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136755253] [2022-10-16 17:28:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:28:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:28:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:18,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136755253] [2022-10-16 17:28:18,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136755253] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172430279] [2022-10-16 17:28:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:18,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:18,488 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) [2022-10-16 17:28:18,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:28:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:28:18,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:28:18,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:28:19,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172430279] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:19,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:19,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-10-16 17:28:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777000515] [2022-10-16 17:28:19,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:19,114 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:28:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:21,216 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2022-10-16 17:28:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:28:21,217 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) Word has length 36 [2022-10-16 17:28:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:21,221 INFO L225 Difference]: With dead ends: 301 [2022-10-16 17:28:21,221 INFO L226 Difference]: Without dead ends: 244 [2022-10-16 17:28:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=409, Invalid=2897, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:28:21,226 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 322 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:21,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1083 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:28:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-10-16 17:28:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 172. [2022-10-16 17:28:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 124 states have internal predecessors, (140), 35 states have call successors, (35), 10 states have call predecessors, (35), 14 states have return successors, (47), 37 states have call predecessors, (47), 35 states have call successors, (47) [2022-10-16 17:28:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2022-10-16 17:28:21,263 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 36 [2022-10-16 17:28:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:21,263 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2022-10-16 17:28:21,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:28:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2022-10-16 17:28:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 17:28:21,267 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:21,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:21,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:21,480 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,SelfDestructingSolverStorable1 [2022-10-16 17:28:21,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash -395184000, now seen corresponding path program 1 times [2022-10-16 17:28:21,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:21,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288439619] [2022-10-16 17:28:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:28:21,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:21,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288439619] [2022-10-16 17:28:21,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288439619] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268723625] [2022-10-16 17:28:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:21,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:21,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:21,813 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) [2022-10-16 17:28:21,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:28:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:21,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:28:21,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:28:22,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268723625] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:22,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:22,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2022-10-16 17:28:22,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508983658] [2022-10-16 17:28:22,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:22,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:28:22,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:28:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:22,078 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:28:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:22,740 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2022-10-16 17:28:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:28:22,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 40 [2022-10-16 17:28:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:22,744 INFO L225 Difference]: With dead ends: 328 [2022-10-16 17:28:22,744 INFO L226 Difference]: Without dead ends: 209 [2022-10-16 17:28:22,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:28:22,748 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 135 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:22,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1081 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-10-16 17:28:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2022-10-16 17:28:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 113 states have (on average 1.247787610619469) internal successors, (141), 126 states have internal predecessors, (141), 35 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (50), 37 states have call predecessors, (50), 35 states have call successors, (50) [2022-10-16 17:28:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 226 transitions. [2022-10-16 17:28:22,778 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 226 transitions. Word has length 40 [2022-10-16 17:28:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:22,779 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 226 transitions. [2022-10-16 17:28:22,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:28:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 226 transitions. [2022-10-16 17:28:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 17:28:22,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:22,782 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:22,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:22,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:22,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1471040422, now seen corresponding path program 1 times [2022-10-16 17:28:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:22,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595895791] [2022-10-16 17:28:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-16 17:28:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:23,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595895791] [2022-10-16 17:28:23,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595895791] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:23,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:23,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833266414] [2022-10-16 17:28:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:23,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:23,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:23,231 INFO L87 Difference]: Start difference. First operand 174 states and 226 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:23,556 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2022-10-16 17:28:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:23,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-10-16 17:28:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:23,562 INFO L225 Difference]: With dead ends: 191 [2022-10-16 17:28:23,562 INFO L226 Difference]: Without dead ends: 190 [2022-10-16 17:28:23,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:23,569 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 51 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:23,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 318 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-10-16 17:28:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2022-10-16 17:28:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 117 states have (on average 1.2393162393162394) internal successors, (145), 129 states have internal predecessors, (145), 35 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (50), 38 states have call predecessors, (50), 35 states have call successors, (50) [2022-10-16 17:28:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2022-10-16 17:28:23,603 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 57 [2022-10-16 17:28:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:23,604 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2022-10-16 17:28:23,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2022-10-16 17:28:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-16 17:28:23,607 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:23,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:28:23,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting tree_inorderErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:23,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1167580947, now seen corresponding path program 1 times [2022-10-16 17:28:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:23,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498859670] [2022-10-16 17:28:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:28:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:28:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:24,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498859670] [2022-10-16 17:28:24,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498859670] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:24,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423723594] [2022-10-16 17:28:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:24,167 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) [2022-10-16 17:28:24,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:28:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:24,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:28:24,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:28:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423723594] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:28:24,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [15] total 16 [2022-10-16 17:28:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862745519] [2022-10-16 17:28:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:28:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:28:24,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:24,349 INFO L87 Difference]: Start difference. First operand 178 states and 230 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:28:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:24,368 INFO L93 Difference]: Finished difference Result 178 states and 230 transitions. [2022-10-16 17:28:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:28:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 63 [2022-10-16 17:28:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:24,374 INFO L225 Difference]: With dead ends: 178 [2022-10-16 17:28:24,375 INFO L226 Difference]: Without dead ends: 177 [2022-10-16 17:28:24,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:24,378 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:24,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 231 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:28:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-16 17:28:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-10-16 17:28:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 117 states have (on average 1.205128205128205) internal successors, (141), 128 states have internal predecessors, (141), 35 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (50), 38 states have call predecessors, (50), 35 states have call successors, (50) [2022-10-16 17:28:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2022-10-16 17:28:24,426 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 63 [2022-10-16 17:28:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:24,435 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2022-10-16 17:28:24,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:28:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2022-10-16 17:28:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 17:28:24,443 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:24,443 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:24,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:24,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash -28773841, now seen corresponding path program 1 times [2022-10-16 17:28:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:24,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350762860] [2022-10-16 17:28:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-10-16 17:28:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:24,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350762860] [2022-10-16 17:28:24,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350762860] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:24,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063240018] [2022-10-16 17:28:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:24,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:24,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:28:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:28:25,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-10-16 17:28:25,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-10-16 17:28:25,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063240018] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:25,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:25,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 15 [2022-10-16 17:28:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973051467] [2022-10-16 17:28:25,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:25,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:28:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:28:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:25,410 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 16 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (15), 10 states have call predecessors, (15), 4 states have call successors, (15) [2022-10-16 17:28:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:25,942 INFO L93 Difference]: Finished difference Result 217 states and 286 transitions. [2022-10-16 17:28:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:28:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (15), 10 states have call predecessors, (15), 4 states have call successors, (15) Word has length 73 [2022-10-16 17:28:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:25,945 INFO L225 Difference]: With dead ends: 217 [2022-10-16 17:28:25,946 INFO L226 Difference]: Without dead ends: 215 [2022-10-16 17:28:25,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:25,948 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 79 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:25,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 441 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:28:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-10-16 17:28:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 196. [2022-10-16 17:28:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 143 states have internal predecessors, (158), 36 states have call successors, (36), 10 states have call predecessors, (36), 17 states have return successors, (64), 42 states have call predecessors, (64), 36 states have call successors, (64) [2022-10-16 17:28:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2022-10-16 17:28:25,969 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 73 [2022-10-16 17:28:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:25,969 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2022-10-16 17:28:25,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (15), 10 states have call predecessors, (15), 4 states have call successors, (15) [2022-10-16 17:28:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2022-10-16 17:28:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-16 17:28:25,972 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:25,972 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:26,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:26,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:26,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1971400780, now seen corresponding path program 1 times [2022-10-16 17:28:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:26,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797939447] [2022-10-16 17:28:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:26,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:28:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:26,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797939447] [2022-10-16 17:28:26,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797939447] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:26,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:26,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264570095] [2022-10-16 17:28:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:26,373 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 17:28:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:26,609 INFO L93 Difference]: Finished difference Result 215 states and 283 transitions. [2022-10-16 17:28:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:26,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2022-10-16 17:28:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:26,623 INFO L225 Difference]: With dead ends: 215 [2022-10-16 17:28:26,624 INFO L226 Difference]: Without dead ends: 214 [2022-10-16 17:28:26,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:26,625 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 57 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:26,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 251 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-10-16 17:28:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2022-10-16 17:28:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 144 states have internal predecessors, (161), 36 states have call successors, (36), 10 states have call predecessors, (36), 17 states have return successors, (64), 43 states have call predecessors, (64), 36 states have call successors, (64) [2022-10-16 17:28:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 261 transitions. [2022-10-16 17:28:26,648 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 261 transitions. Word has length 69 [2022-10-16 17:28:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:26,649 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 261 transitions. [2022-10-16 17:28:26,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 17:28:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 261 transitions. [2022-10-16 17:28:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 17:28:26,652 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:26,652 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:26,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:28:26,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash -959744662, now seen corresponding path program 1 times [2022-10-16 17:28:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:26,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881139205] [2022-10-16 17:28:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:28:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 17:28:27,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:27,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881139205] [2022-10-16 17:28:27,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881139205] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:27,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026444575] [2022-10-16 17:28:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:27,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:27,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:27,188 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:27,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:28:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:28:27,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 17:28:27,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:28:28,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026444575] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:28,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:28,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2022-10-16 17:28:28,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458124952] [2022-10-16 17:28:28,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:28,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:28:28,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:28:28,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:28:28,576 INFO L87 Difference]: Start difference. First operand 198 states and 261 transitions. Second operand has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) [2022-10-16 17:28:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:30,824 INFO L93 Difference]: Finished difference Result 358 states and 469 transitions. [2022-10-16 17:28:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:28:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) Word has length 76 [2022-10-16 17:28:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:30,828 INFO L225 Difference]: With dead ends: 358 [2022-10-16 17:28:30,828 INFO L226 Difference]: Without dead ends: 196 [2022-10-16 17:28:30,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=334, Invalid=3956, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 17:28:30,833 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 290 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:30,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2929 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:28:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-10-16 17:28:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 162. [2022-10-16 17:28:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.2) internal successors, (132), 118 states have internal predecessors, (132), 29 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (50), 35 states have call predecessors, (50), 29 states have call successors, (50) [2022-10-16 17:28:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 211 transitions. [2022-10-16 17:28:30,859 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 211 transitions. Word has length 76 [2022-10-16 17:28:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:30,859 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 211 transitions. [2022-10-16 17:28:30,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) [2022-10-16 17:28:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 211 transitions. [2022-10-16 17:28:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 17:28:30,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:30,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:30,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:31,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:31,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1850394735, now seen corresponding path program 1 times [2022-10-16 17:28:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:31,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847994912] [2022-10-16 17:28:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-16 17:28:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:31,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:31,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847994912] [2022-10-16 17:28:31,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847994912] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:31,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:31,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 17:28:31,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292640900] [2022-10-16 17:28:31,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:31,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:28:31,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:28:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:28:31,268 INFO L87 Difference]: Start difference. First operand 162 states and 211 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 17:28:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:31,563 INFO L93 Difference]: Finished difference Result 191 states and 248 transitions. [2022-10-16 17:28:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2022-10-16 17:28:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:31,565 INFO L225 Difference]: With dead ends: 191 [2022-10-16 17:28:31,566 INFO L226 Difference]: Without dead ends: 189 [2022-10-16 17:28:31,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:31,569 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 50 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:31,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 368 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:28:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-16 17:28:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2022-10-16 17:28:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 115 states have (on average 1.191304347826087) internal successors, (137), 122 states have internal predecessors, (137), 31 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (52), 38 states have call predecessors, (52), 31 states have call successors, (52) [2022-10-16 17:28:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2022-10-16 17:28:31,586 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 65 [2022-10-16 17:28:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:31,588 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2022-10-16 17:28:31,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 17:28:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2022-10-16 17:28:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-16 17:28:31,593 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:31,593 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:28:31,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:31,594 INFO L85 PathProgramCache]: Analyzing trace with hash -239433257, now seen corresponding path program 1 times [2022-10-16 17:28:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:31,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712620348] [2022-10-16 17:28:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:31,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:28:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:31,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712620348] [2022-10-16 17:28:31,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712620348] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:31,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175869310] [2022-10-16 17:28:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:31,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:31,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:31,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:28:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:28:32,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:32,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:32,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175869310] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:32,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:32,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 31 [2022-10-16 17:28:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563020798] [2022-10-16 17:28:32,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:32,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:28:32,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:28:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:28:32,456 INFO L87 Difference]: Start difference. First operand 169 states and 220 transitions. Second operand has 32 states, 31 states have (on average 2.129032258064516) internal successors, (66), 20 states have internal predecessors, (66), 7 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (16), 10 states have call predecessors, (16), 7 states have call successors, (16) [2022-10-16 17:28:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:33,643 INFO L93 Difference]: Finished difference Result 224 states and 290 transitions. [2022-10-16 17:28:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-16 17:28:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.129032258064516) internal successors, (66), 20 states have internal predecessors, (66), 7 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (16), 10 states have call predecessors, (16), 7 states have call successors, (16) Word has length 71 [2022-10-16 17:28:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:33,645 INFO L225 Difference]: With dead ends: 224 [2022-10-16 17:28:33,646 INFO L226 Difference]: Without dead ends: 223 [2022-10-16 17:28:33,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 17:28:33,648 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 202 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:33,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 910 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:28:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-10-16 17:28:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2022-10-16 17:28:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 144 states have internal predecessors, (162), 36 states have call successors, (36), 10 states have call predecessors, (36), 17 states have return successors, (61), 44 states have call predecessors, (61), 36 states have call successors, (61) [2022-10-16 17:28:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 259 transitions. [2022-10-16 17:28:33,665 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 259 transitions. Word has length 71 [2022-10-16 17:28:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:33,666 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 259 transitions. [2022-10-16 17:28:33,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.129032258064516) internal successors, (66), 20 states have internal predecessors, (66), 7 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (16), 10 states have call predecessors, (16), 7 states have call successors, (16) [2022-10-16 17:28:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 259 transitions. [2022-10-16 17:28:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 17:28:33,668 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:33,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:33,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:33,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:33,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:33,885 INFO L85 PathProgramCache]: Analyzing trace with hash -814663870, now seen corresponding path program 1 times [2022-10-16 17:28:33,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:33,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039588579] [2022-10-16 17:28:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:28:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:28:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:34,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039588579] [2022-10-16 17:28:34,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039588579] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:34,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661273775] [2022-10-16 17:28:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:34,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:34,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:34,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:34,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:28:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:28:34,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:34,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 17:28:34,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661273775] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:34,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:34,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 33 [2022-10-16 17:28:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881975633] [2022-10-16 17:28:34,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 17:28:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 17:28:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 17:28:34,983 INFO L87 Difference]: Start difference. First operand 199 states and 259 transitions. Second operand has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:28:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:36,949 INFO L93 Difference]: Finished difference Result 350 states and 467 transitions. [2022-10-16 17:28:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 17:28:36,950 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) Word has length 75 [2022-10-16 17:28:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:36,954 INFO L225 Difference]: With dead ends: 350 [2022-10-16 17:28:36,954 INFO L226 Difference]: Without dead ends: 349 [2022-10-16 17:28:36,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=407, Invalid=3253, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:28:36,958 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 265 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:36,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1408 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:28:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-10-16 17:28:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 250. [2022-10-16 17:28:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 172 states have (on average 1.1744186046511629) internal successors, (202), 181 states have internal predecessors, (202), 46 states have call successors, (46), 12 states have call predecessors, (46), 22 states have return successors, (86), 56 states have call predecessors, (86), 46 states have call successors, (86) [2022-10-16 17:28:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 334 transitions. [2022-10-16 17:28:36,983 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 334 transitions. Word has length 75 [2022-10-16 17:28:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:36,983 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 334 transitions. [2022-10-16 17:28:36,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:28:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 334 transitions. [2022-10-16 17:28:36,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-16 17:28:36,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:36,986 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:37,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 17:28:37,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1024206312, now seen corresponding path program 1 times [2022-10-16 17:28:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131461767] [2022-10-16 17:28:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:28:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:28:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 46 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-10-16 17:28:37,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:37,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131461767] [2022-10-16 17:28:37,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131461767] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:37,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416373377] [2022-10-16 17:28:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:37,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:37,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:37,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:28:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:28:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 46 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-10-16 17:28:38,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 64 proven. 35 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-10-16 17:28:38,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416373377] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:38,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:38,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 23 [2022-10-16 17:28:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077397518] [2022-10-16 17:28:38,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:38,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:28:38,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:28:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:28:38,688 INFO L87 Difference]: Start difference. First operand 250 states and 334 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 16 states have call predecessors, (22), 6 states have call successors, (22) [2022-10-16 17:28:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:39,784 INFO L93 Difference]: Finished difference Result 336 states and 462 transitions. [2022-10-16 17:28:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:28:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 16 states have call predecessors, (22), 6 states have call successors, (22) Word has length 112 [2022-10-16 17:28:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:39,788 INFO L225 Difference]: With dead ends: 336 [2022-10-16 17:28:39,788 INFO L226 Difference]: Without dead ends: 334 [2022-10-16 17:28:39,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 247 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=501, Invalid=1949, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:28:39,791 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 151 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:39,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 831 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:28:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-10-16 17:28:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 270. [2022-10-16 17:28:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 188 states have (on average 1.1648936170212767) internal successors, (219), 196 states have internal predecessors, (219), 48 states have call successors, (48), 12 states have call predecessors, (48), 24 states have return successors, (114), 61 states have call predecessors, (114), 48 states have call successors, (114) [2022-10-16 17:28:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 381 transitions. [2022-10-16 17:28:39,814 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 381 transitions. Word has length 112 [2022-10-16 17:28:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:39,815 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 381 transitions. [2022-10-16 17:28:39,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 16 states have call predecessors, (22), 6 states have call successors, (22) [2022-10-16 17:28:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 381 transitions. [2022-10-16 17:28:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-10-16 17:28:39,818 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:39,818 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:39,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:40,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:40,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1203728514, now seen corresponding path program 2 times [2022-10-16 17:28:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:40,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187757771] [2022-10-16 17:28:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:40,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 17:28:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 17:28:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:28:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 86 proven. 57 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-10-16 17:28:40,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:40,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187757771] [2022-10-16 17:28:40,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187757771] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:40,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766104202] [2022-10-16 17:28:40,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:40,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:40,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:40,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:40,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:28:40,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:40,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:40,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:28:40,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 46 proven. 51 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-10-16 17:28:40,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 46 proven. 51 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-10-16 17:28:41,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766104202] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:41,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:41,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18 [2022-10-16 17:28:41,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896164924] [2022-10-16 17:28:41,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:41,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:28:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:28:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:28:41,147 INFO L87 Difference]: Start difference. First operand 270 states and 381 transitions. Second operand has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2022-10-16 17:28:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:41,857 INFO L93 Difference]: Finished difference Result 313 states and 458 transitions. [2022-10-16 17:28:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:28:41,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) Word has length 129 [2022-10-16 17:28:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:41,861 INFO L225 Difference]: With dead ends: 313 [2022-10-16 17:28:41,861 INFO L226 Difference]: Without dead ends: 312 [2022-10-16 17:28:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-10-16 17:28:41,863 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 116 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 644 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:28:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-10-16 17:28:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 261. [2022-10-16 17:28:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 180 states have (on average 1.15) internal successors, (207), 190 states have internal predecessors, (207), 48 states have call successors, (48), 12 states have call predecessors, (48), 24 states have return successors, (114), 58 states have call predecessors, (114), 48 states have call successors, (114) [2022-10-16 17:28:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 369 transitions. [2022-10-16 17:28:41,889 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 369 transitions. Word has length 129 [2022-10-16 17:28:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:41,890 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 369 transitions. [2022-10-16 17:28:41,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2022-10-16 17:28:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 369 transitions. [2022-10-16 17:28:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-16 17:28:41,892 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:41,893 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:41,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:42,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:28:42,106 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 174463915, now seen corresponding path program 2 times [2022-10-16 17:28:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:42,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957519210] [2022-10-16 17:28:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:28:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 44 proven. 93 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-10-16 17:28:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:43,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957519210] [2022-10-16 17:28:43,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957519210] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:43,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444039188] [2022-10-16 17:28:43,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:43,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:43,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:43,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:28:43,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:43,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:43,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 17:28:43,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 44 proven. 93 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-10-16 17:28:43,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 87 proven. 73 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-10-16 17:28:44,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444039188] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:44,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:44,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 27 [2022-10-16 17:28:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201183819] [2022-10-16 17:28:44,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:44,233 INFO L87 Difference]: Start difference. First operand 261 states and 369 transitions. Second operand has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 6 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (25), 19 states have call predecessors, (25), 6 states have call successors, (25) [2022-10-16 17:28:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:45,163 INFO L93 Difference]: Finished difference Result 369 states and 558 transitions. [2022-10-16 17:28:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:28:45,164 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 6 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (25), 19 states have call predecessors, (25), 6 states have call successors, (25) Word has length 127 [2022-10-16 17:28:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:45,167 INFO L225 Difference]: With dead ends: 369 [2022-10-16 17:28:45,168 INFO L226 Difference]: Without dead ends: 367 [2022-10-16 17:28:45,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 279 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=532, Invalid=2120, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:28:45,170 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 209 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:45,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 511 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:28:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-10-16 17:28:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 259. [2022-10-16 17:28:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 179 states have (on average 1.1508379888268156) internal successors, (206), 189 states have internal predecessors, (206), 47 states have call successors, (47), 12 states have call predecessors, (47), 24 states have return successors, (107), 57 states have call predecessors, (107), 47 states have call successors, (107) [2022-10-16 17:28:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 360 transitions. [2022-10-16 17:28:45,197 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 360 transitions. Word has length 127 [2022-10-16 17:28:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:45,197 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 360 transitions. [2022-10-16 17:28:45,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 6 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (25), 19 states have call predecessors, (25), 6 states have call successors, (25) [2022-10-16 17:28:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 360 transitions. [2022-10-16 17:28:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 17:28:45,200 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:45,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:45,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 17:28:45,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:45,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash -558267884, now seen corresponding path program 1 times [2022-10-16 17:28:45,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:45,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985389627] [2022-10-16 17:28:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-16 17:28:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-16 17:28:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:28:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:45,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985389627] [2022-10-16 17:28:45,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985389627] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:45,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:45,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:28:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111148194] [2022-10-16 17:28:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:45,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 17:28:45,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 17:28:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:45,583 INFO L87 Difference]: Start difference. First operand 259 states and 360 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:28:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:45,854 INFO L93 Difference]: Finished difference Result 286 states and 395 transitions. [2022-10-16 17:28:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:28:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2022-10-16 17:28:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:45,860 INFO L225 Difference]: With dead ends: 286 [2022-10-16 17:28:45,860 INFO L226 Difference]: Without dead ends: 264 [2022-10-16 17:28:45,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:28:45,863 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 71 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:45,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 352 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-10-16 17:28:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2022-10-16 17:28:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 176 states have (on average 1.1534090909090908) internal successors, (203), 187 states have internal predecessors, (203), 47 states have call successors, (47), 12 states have call predecessors, (47), 24 states have return successors, (105), 56 states have call predecessors, (105), 46 states have call successors, (105) [2022-10-16 17:28:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 355 transitions. [2022-10-16 17:28:45,891 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 355 transitions. Word has length 74 [2022-10-16 17:28:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:45,892 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 355 transitions. [2022-10-16 17:28:45,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:28:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 355 transitions. [2022-10-16 17:28:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-10-16 17:28:45,895 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:45,895 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 17:28:45,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2062984351, now seen corresponding path program 2 times [2022-10-16 17:28:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175663518] [2022-10-16 17:28:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:28:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 17:28:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:28:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 154 proven. 121 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-10-16 17:28:46,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:46,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175663518] [2022-10-16 17:28:46,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175663518] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137837126] [2022-10-16 17:28:46,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:46,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:46,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:46,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:46,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:28:47,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:47,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:47,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 17:28:47,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 154 proven. 121 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-10-16 17:28:47,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 198 proven. 104 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-10-16 17:28:48,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137837126] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:48,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:48,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 16] total 27 [2022-10-16 17:28:48,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167178506] [2022-10-16 17:28:48,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:48,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:48,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:48,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:48,362 INFO L87 Difference]: Start difference. First operand 256 states and 355 transitions. Second operand has 28 states, 27 states have (on average 3.6666666666666665) internal successors, (99), 27 states have internal predecessors, (99), 6 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (26), 19 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-16 17:28:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:49,385 INFO L93 Difference]: Finished difference Result 435 states and 708 transitions. [2022-10-16 17:28:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 17:28:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.6666666666666665) internal successors, (99), 27 states have internal predecessors, (99), 6 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (26), 19 states have call predecessors, (26), 6 states have call successors, (26) Word has length 157 [2022-10-16 17:28:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:49,395 INFO L225 Difference]: With dead ends: 435 [2022-10-16 17:28:49,395 INFO L226 Difference]: Without dead ends: 433 [2022-10-16 17:28:49,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 347 SyntacticMatches, 14 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=2052, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 17:28:49,398 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 171 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:49,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 575 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:49,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-10-16 17:28:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 326. [2022-10-16 17:28:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 231 states have (on average 1.1168831168831168) internal successors, (258), 242 states have internal predecessors, (258), 54 states have call successors, (54), 12 states have call predecessors, (54), 32 states have return successors, (274), 71 states have call predecessors, (274), 53 states have call successors, (274) [2022-10-16 17:28:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 586 transitions. [2022-10-16 17:28:49,445 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 586 transitions. Word has length 157 [2022-10-16 17:28:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 586 transitions. [2022-10-16 17:28:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.6666666666666665) internal successors, (99), 27 states have internal predecessors, (99), 6 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (26), 19 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-16 17:28:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 586 transitions. [2022-10-16 17:28:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-10-16 17:28:49,449 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:49,450 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:49,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:28:49,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:49,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -299482560, now seen corresponding path program 1 times [2022-10-16 17:28:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736249449] [2022-10-16 17:28:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:49,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 17:28:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:50,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736249449] [2022-10-16 17:28:50,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736249449] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:50,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186074183] [2022-10-16 17:28:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:50,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:50,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:50,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:28:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:28:50,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 17:28:50,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 17:28:51,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186074183] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:51,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:51,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 46 [2022-10-16 17:28:51,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680249600] [2022-10-16 17:28:51,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:51,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:28:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:28:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2002, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:28:51,387 INFO L87 Difference]: Start difference. First operand 326 states and 586 transitions. Second operand has 47 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 30 states have internal predecessors, (85), 13 states have call successors, (26), 7 states have call predecessors, (26), 11 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2022-10-16 17:28:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:53,879 INFO L93 Difference]: Finished difference Result 398 states and 698 transitions. [2022-10-16 17:28:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-10-16 17:28:53,880 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 30 states have internal predecessors, (85), 13 states have call successors, (26), 7 states have call predecessors, (26), 11 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) Word has length 82 [2022-10-16 17:28:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:53,884 INFO L225 Difference]: With dead ends: 398 [2022-10-16 17:28:53,884 INFO L226 Difference]: Without dead ends: 397 [2022-10-16 17:28:53,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=817, Invalid=6493, Unknown=0, NotChecked=0, Total=7310 [2022-10-16 17:28:53,891 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 169 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:53,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1917 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:28:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-10-16 17:28:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 368. [2022-10-16 17:28:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 261 states have (on average 1.1111111111111112) internal successors, (290), 272 states have internal predecessors, (290), 59 states have call successors, (59), 13 states have call predecessors, (59), 39 states have return successors, (298), 82 states have call predecessors, (298), 58 states have call successors, (298) [2022-10-16 17:28:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 647 transitions. [2022-10-16 17:28:53,931 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 647 transitions. Word has length 82 [2022-10-16 17:28:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:53,931 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 647 transitions. [2022-10-16 17:28:53,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 30 states have internal predecessors, (85), 13 states have call successors, (26), 7 states have call predecessors, (26), 11 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2022-10-16 17:28:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 647 transitions. [2022-10-16 17:28:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-16 17:28:53,934 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:53,936 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:53,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:54,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:28:54,145 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:54,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1797477643, now seen corresponding path program 1 times [2022-10-16 17:28:54,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:54,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636647149] [2022-10-16 17:28:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:28:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 17:28:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 17:28:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636647149] [2022-10-16 17:28:54,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636647149] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028122179] [2022-10-16 17:28:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:54,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:54,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:54,905 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:54,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:28:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-16 17:28:55,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 17:28:55,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 17:28:56,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028122179] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:56,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:56,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 46 [2022-10-16 17:28:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121718259] [2022-10-16 17:28:56,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:56,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:28:56,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:28:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:28:56,146 INFO L87 Difference]: Start difference. First operand 368 states and 647 transitions. Second operand has 47 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (30), 6 states have call predecessors, (30), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) [2022-10-16 17:28:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:59,010 INFO L93 Difference]: Finished difference Result 558 states and 918 transitions. [2022-10-16 17:28:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 17:28:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (30), 6 states have call predecessors, (30), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) Word has length 92 [2022-10-16 17:28:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:59,017 INFO L225 Difference]: With dead ends: 558 [2022-10-16 17:28:59,018 INFO L226 Difference]: Without dead ends: 557 [2022-10-16 17:28:59,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=821, Invalid=7735, Unknown=0, NotChecked=0, Total=8556 [2022-10-16 17:28:59,022 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 254 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:59,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1326 Invalid, 2380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:28:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-10-16 17:28:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 408. [2022-10-16 17:28:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 290 states have (on average 1.106896551724138) internal successors, (321), 300 states have internal predecessors, (321), 64 states have call successors, (64), 14 states have call predecessors, (64), 45 states have return successors, (317), 93 states have call predecessors, (317), 63 states have call successors, (317) [2022-10-16 17:28:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 702 transitions. [2022-10-16 17:28:59,069 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 702 transitions. Word has length 92 [2022-10-16 17:28:59,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:59,069 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 702 transitions. [2022-10-16 17:28:59,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (30), 6 states have call predecessors, (30), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) [2022-10-16 17:28:59,070 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 702 transitions. [2022-10-16 17:28:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-10-16 17:28:59,073 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:59,073 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:59,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:59,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:59,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash 652384542, now seen corresponding path program 3 times [2022-10-16 17:28:59,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:59,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948106425] [2022-10-16 17:28:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:59,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 17:28:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 52 proven. 167 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-10-16 17:29:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948106425] [2022-10-16 17:29:00,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948106425] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849401744] [2022-10-16 17:29:00,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:00,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:00,267 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:00,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 17:29:00,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:29:00,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:00,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 75 conjunts are in the unsatisfiable core [2022-10-16 17:29:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:00,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-16 17:29:00,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-16 17:29:00,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-10-16 17:29:00,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-10-16 17:29:01,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-10-16 17:29:01,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-10-16 17:29:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 295 proven. 31 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-10-16 17:29:01,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:01,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849401744] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:01,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:29:01,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 32 [2022-10-16 17:29:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321131986] [2022-10-16 17:29:01,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:01,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:29:01,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:29:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1220, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:29:01,703 INFO L87 Difference]: Start difference. First operand 408 states and 702 transitions. Second operand has 32 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 12 states have call successors, (24), 6 states have call predecessors, (24), 13 states have return successors, (26), 15 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-16 17:29:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:05,258 INFO L93 Difference]: Finished difference Result 952 states and 1632 transitions. [2022-10-16 17:29:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:29:05,259 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 12 states have call successors, (24), 6 states have call predecessors, (24), 13 states have return successors, (26), 15 states have call predecessors, (26), 12 states have call successors, (26) Word has length 150 [2022-10-16 17:29:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:05,266 INFO L225 Difference]: With dead ends: 952 [2022-10-16 17:29:05,266 INFO L226 Difference]: Without dead ends: 728 [2022-10-16 17:29:05,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=723, Invalid=4679, Unknown=0, NotChecked=0, Total=5402 [2022-10-16 17:29:05,274 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 286 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 542 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:05,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1920 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2316 Invalid, 0 Unknown, 542 Unchecked, 1.6s Time] [2022-10-16 17:29:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-10-16 17:29:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 483. [2022-10-16 17:29:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 347 states have (on average 1.1095100864553313) internal successors, (385), 358 states have internal predecessors, (385), 72 states have call successors, (72), 17 states have call predecessors, (72), 55 states have return successors, (389), 107 states have call predecessors, (389), 71 states have call successors, (389) [2022-10-16 17:29:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 846 transitions. [2022-10-16 17:29:05,340 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 846 transitions. Word has length 150 [2022-10-16 17:29:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:05,341 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 846 transitions. [2022-10-16 17:29:05,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 12 states have call successors, (24), 6 states have call predecessors, (24), 13 states have return successors, (26), 15 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-16 17:29:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 846 transitions. [2022-10-16 17:29:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-10-16 17:29:05,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:05,347 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:05,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:05,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:05,561 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2010064603, now seen corresponding path program 4 times [2022-10-16 17:29:05,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:05,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758233325] [2022-10-16 17:29:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:05,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 17:29:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-16 17:29:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-16 17:29:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 198 proven. 178 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-10-16 17:29:06,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758233325] [2022-10-16 17:29:06,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758233325] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939431448] [2022-10-16 17:29:06,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:06,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:06,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:06,803 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:06,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:29:07,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:07,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:07,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:29:07,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 198 proven. 178 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-10-16 17:29:07,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 246 proven. 152 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-10-16 17:29:08,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939431448] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:08,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:08,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 16] total 29 [2022-10-16 17:29:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578774802] [2022-10-16 17:29:08,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-16 17:29:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-16 17:29:08,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-10-16 17:29:08,580 INFO L87 Difference]: Start difference. First operand 483 states and 846 transitions. Second operand has 30 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 7 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (28), 21 states have call predecessors, (28), 7 states have call successors, (28) [2022-10-16 17:29:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:09,756 INFO L93 Difference]: Finished difference Result 738 states and 1345 transitions. [2022-10-16 17:29:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 17:29:09,756 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 7 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (28), 21 states have call predecessors, (28), 7 states have call successors, (28) Word has length 211 [2022-10-16 17:29:09,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:09,765 INFO L225 Difference]: With dead ends: 738 [2022-10-16 17:29:09,766 INFO L226 Difference]: Without dead ends: 736 [2022-10-16 17:29:09,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 466 SyntacticMatches, 18 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=692, Invalid=2730, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 17:29:09,769 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 191 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:09,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 639 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:29:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-10-16 17:29:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 401. [2022-10-16 17:29:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 281 states have (on average 1.1352313167259787) internal successors, (319), 292 states have internal predecessors, (319), 66 states have call successors, (66), 17 states have call predecessors, (66), 45 states have return successors, (187), 91 states have call predecessors, (187), 65 states have call successors, (187) [2022-10-16 17:29:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 572 transitions. [2022-10-16 17:29:09,839 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 572 transitions. Word has length 211 [2022-10-16 17:29:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:09,839 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 572 transitions. [2022-10-16 17:29:09,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 7 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (28), 21 states have call predecessors, (28), 7 states have call successors, (28) [2022-10-16 17:29:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 572 transitions. [2022-10-16 17:29:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-16 17:29:09,844 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:09,844 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:09,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:10,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:10,058 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1226004833, now seen corresponding path program 1 times [2022-10-16 17:29:10,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:10,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067716196] [2022-10-16 17:29:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:10,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 17:29:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-16 17:29:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-16 17:29:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-16 17:29:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-10-16 17:29:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:10,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067716196] [2022-10-16 17:29:10,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067716196] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139520348] [2022-10-16 17:29:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:10,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:10,990 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:11,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:29:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:29:11,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-10-16 17:29:11,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-10-16 17:29:12,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139520348] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:12,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:12,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 23] total 47 [2022-10-16 17:29:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709202583] [2022-10-16 17:29:12,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:29:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:29:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2077, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:29:12,343 INFO L87 Difference]: Start difference. First operand 401 states and 572 transitions. Second operand has 48 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 35 states have internal predecessors, (103), 10 states have call successors, (27), 8 states have call predecessors, (27), 11 states have return successors, (25), 18 states have call predecessors, (25), 10 states have call successors, (25) [2022-10-16 17:29:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:15,156 INFO L93 Difference]: Finished difference Result 663 states and 928 transitions. [2022-10-16 17:29:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-10-16 17:29:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 35 states have internal predecessors, (103), 10 states have call successors, (27), 8 states have call predecessors, (27), 11 states have return successors, (25), 18 states have call predecessors, (25), 10 states have call successors, (25) Word has length 138 [2022-10-16 17:29:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:15,163 INFO L225 Difference]: With dead ends: 663 [2022-10-16 17:29:15,163 INFO L226 Difference]: Without dead ends: 662 [2022-10-16 17:29:15,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 291 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=885, Invalid=7487, Unknown=0, NotChecked=0, Total=8372 [2022-10-16 17:29:15,166 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 237 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:15,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1516 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 17:29:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-10-16 17:29:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 524. [2022-10-16 17:29:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 370 states have (on average 1.1297297297297297) internal successors, (418), 383 states have internal predecessors, (418), 85 states have call successors, (85), 22 states have call predecessors, (85), 60 states have return successors, (254), 118 states have call predecessors, (254), 84 states have call successors, (254) [2022-10-16 17:29:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 757 transitions. [2022-10-16 17:29:15,215 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 757 transitions. Word has length 138 [2022-10-16 17:29:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:15,216 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 757 transitions. [2022-10-16 17:29:15,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 35 states have internal predecessors, (103), 10 states have call successors, (27), 8 states have call predecessors, (27), 11 states have return successors, (25), 18 states have call predecessors, (25), 10 states have call successors, (25) [2022-10-16 17:29:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 757 transitions. [2022-10-16 17:29:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-10-16 17:29:15,222 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:15,222 INFO L195 NwaCegarLoop]: trace histogram [23, 21, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:15,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:15,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:15,436 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash -5795475, now seen corresponding path program 3 times [2022-10-16 17:29:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:15,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938675439] [2022-10-16 17:29:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 17:29:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:29:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-10-16 17:29:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:29:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 342 proven. 245 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2022-10-16 17:29:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938675439] [2022-10-16 17:29:17,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938675439] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859683012] [2022-10-16 17:29:17,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:17,165 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:17,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:29:17,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:29:17,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:17,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 90 conjunts are in the unsatisfiable core [2022-10-16 17:29:17,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:17,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-16 17:29:17,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-16 17:29:17,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-16 17:29:17,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:29:17,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-16 17:29:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:29:17,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-16 17:29:17,992 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:29:17,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 11 [2022-10-16 17:29:18,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-10-16 17:29:18,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-10-16 17:29:18,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-10-16 17:29:18,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-10-16 17:29:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 516 proven. 45 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-10-16 17:29:18,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859683012] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:20,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:29:20,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 36 [2022-10-16 17:29:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402503462] [2022-10-16 17:29:20,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:20,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-10-16 17:29:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-10-16 17:29:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1744, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 17:29:20,321 INFO L87 Difference]: Start difference. First operand 524 states and 757 transitions. Second operand has 36 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 29 states have internal predecessors, (105), 12 states have call successors, (26), 8 states have call predecessors, (26), 13 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) [2022-10-16 17:29:22,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:22,998 INFO L93 Difference]: Finished difference Result 995 states and 1472 transitions. [2022-10-16 17:29:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-16 17:29:23,001 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 29 states have internal predecessors, (105), 12 states have call successors, (26), 8 states have call predecessors, (26), 13 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) Word has length 241 [2022-10-16 17:29:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:23,008 INFO L225 Difference]: With dead ends: 995 [2022-10-16 17:29:23,009 INFO L226 Difference]: Without dead ends: 787 [2022-10-16 17:29:23,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 520 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=691, Invalid=5161, Unknown=0, NotChecked=0, Total=5852 [2022-10-16 17:29:23,013 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 265 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:23,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1410 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1675 Invalid, 0 Unknown, 420 Unchecked, 1.1s Time] [2022-10-16 17:29:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-10-16 17:29:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 574. [2022-10-16 17:29:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 406 states have (on average 1.1280788177339902) internal successors, (458), 421 states have internal predecessors, (458), 92 states have call successors, (92), 25 states have call predecessors, (92), 67 states have return successors, (318), 127 states have call predecessors, (318), 91 states have call successors, (318) [2022-10-16 17:29:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 868 transitions. [2022-10-16 17:29:23,071 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 868 transitions. Word has length 241 [2022-10-16 17:29:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:23,071 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 868 transitions. [2022-10-16 17:29:23,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 29 states have internal predecessors, (105), 12 states have call successors, (26), 8 states have call predecessors, (26), 13 states have return successors, (30), 18 states have call predecessors, (30), 12 states have call successors, (30) [2022-10-16 17:29:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 868 transitions. [2022-10-16 17:29:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 17:29:23,076 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:23,077 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:23,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:23,292 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -529027825, now seen corresponding path program 1 times [2022-10-16 17:29:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:23,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351821106] [2022-10-16 17:29:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:23,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:29:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:29:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:29:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:29:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:29:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:29:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:29:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 17:29:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 17:29:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 16 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:29:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:23,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351821106] [2022-10-16 17:29:23,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351821106] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:23,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711343266] [2022-10-16 17:29:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:23,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:23,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:23,868 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:23,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:29:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:24,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-16 17:29:24,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 27 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:29:24,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 27 proven. 65 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:29:24,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711343266] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:24,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:24,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 22] total 51 [2022-10-16 17:29:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507887329] [2022-10-16 17:29:24,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-10-16 17:29:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-10-16 17:29:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:29:24,938 INFO L87 Difference]: Start difference. First operand 574 states and 868 transitions. Second operand has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 32 states have internal predecessors, (93), 11 states have call successors, (34), 11 states have call predecessors, (34), 9 states have return successors, (22), 14 states have call predecessors, (22), 11 states have call successors, (22) [2022-10-16 17:29:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:27,976 INFO L93 Difference]: Finished difference Result 655 states and 968 transitions. [2022-10-16 17:29:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-16 17:29:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 32 states have internal predecessors, (93), 11 states have call successors, (34), 11 states have call predecessors, (34), 9 states have return successors, (22), 14 states have call predecessors, (22), 11 states have call successors, (22) Word has length 96 [2022-10-16 17:29:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:27,982 INFO L225 Difference]: With dead ends: 655 [2022-10-16 17:29:27,982 INFO L226 Difference]: Without dead ends: 654 [2022-10-16 17:29:27,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1425, Invalid=9081, Unknown=0, NotChecked=0, Total=10506 [2022-10-16 17:29:27,987 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 272 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:27,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1525 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:29:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-10-16 17:29:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 636. [2022-10-16 17:29:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 449 states have (on average 1.133630289532294) internal successors, (509), 467 states have internal predecessors, (509), 103 states have call successors, (103), 29 states have call predecessors, (103), 75 states have return successors, (340), 139 states have call predecessors, (340), 102 states have call successors, (340) [2022-10-16 17:29:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 952 transitions. [2022-10-16 17:29:28,069 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 952 transitions. Word has length 96 [2022-10-16 17:29:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:28,069 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 952 transitions. [2022-10-16 17:29:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 32 states have internal predecessors, (93), 11 states have call successors, (34), 11 states have call predecessors, (34), 9 states have return successors, (22), 14 states have call predecessors, (22), 11 states have call successors, (22) [2022-10-16 17:29:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 952 transitions. [2022-10-16 17:29:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-10-16 17:29:28,076 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:28,076 INFO L195 NwaCegarLoop]: trace histogram [20, 18, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:28,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:28,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:28,290 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash -405067144, now seen corresponding path program 4 times [2022-10-16 17:29:28,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:28,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037718898] [2022-10-16 17:29:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:28,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:29:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-16 17:29:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 95 proven. 272 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-10-16 17:29:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:29,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037718898] [2022-10-16 17:29:29,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037718898] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:29,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305871624] [2022-10-16 17:29:29,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:29,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:29,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:29,566 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:29,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:29:29,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:29,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:29,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 17:29:29,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 95 proven. 272 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-10-16 17:29:30,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 155 proven. 249 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-10-16 17:29:32,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305871624] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:32,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:32,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 31 [2022-10-16 17:29:32,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943809705] [2022-10-16 17:29:32,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:29:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:29:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:29:32,118 INFO L87 Difference]: Start difference. First operand 636 states and 952 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 7 states have call successors, (17), 2 states have call predecessors, (17), 9 states have return successors, (27), 22 states have call predecessors, (27), 7 states have call successors, (27) [2022-10-16 17:29:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:33,501 INFO L93 Difference]: Finished difference Result 855 states and 1323 transitions. [2022-10-16 17:29:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-10-16 17:29:33,501 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 7 states have call successors, (17), 2 states have call predecessors, (17), 9 states have return successors, (27), 22 states have call predecessors, (27), 7 states have call successors, (27) Word has length 183 [2022-10-16 17:29:33,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:33,509 INFO L225 Difference]: With dead ends: 855 [2022-10-16 17:29:33,509 INFO L226 Difference]: Without dead ends: 853 [2022-10-16 17:29:33,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 395 SyntacticMatches, 24 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2022-10-16 17:29:33,511 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 220 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:33,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 831 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:29:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-10-16 17:29:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 677. [2022-10-16 17:29:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 482 states have (on average 1.1244813278008299) internal successors, (542), 500 states have internal predecessors, (542), 106 states have call successors, (106), 29 states have call predecessors, (106), 80 states have return successors, (455), 147 states have call predecessors, (455), 105 states have call successors, (455) [2022-10-16 17:29:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1103 transitions. [2022-10-16 17:29:33,585 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1103 transitions. Word has length 183 [2022-10-16 17:29:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:33,585 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1103 transitions. [2022-10-16 17:29:33,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 7 states have call successors, (17), 2 states have call predecessors, (17), 9 states have return successors, (27), 22 states have call predecessors, (27), 7 states have call successors, (27) [2022-10-16 17:29:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1103 transitions. [2022-10-16 17:29:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-10-16 17:29:33,596 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:33,596 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 17, 16, 16, 16, 16, 16, 13, 13, 13, 13, 12, 12, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:33,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 17:29:33,810 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1194896565, now seen corresponding path program 5 times [2022-10-16 17:29:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288980517] [2022-10-16 17:29:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:29:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:29:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-16 17:29:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:29:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 749 proven. 373 refuted. 0 times theorem prover too weak. 1505 trivial. 0 not checked. [2022-10-16 17:29:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288980517] [2022-10-16 17:29:35,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288980517] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:35,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758355724] [2022-10-16 17:29:35,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:29:35,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:35,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:35,527 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:35,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:29:35,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-10-16 17:29:35,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:35,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:29:35,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 749 proven. 373 refuted. 0 times theorem prover too weak. 1505 trivial. 0 not checked. [2022-10-16 17:29:36,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 820 proven. 331 refuted. 0 times theorem prover too weak. 1476 trivial. 0 not checked. [2022-10-16 17:29:38,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758355724] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:38,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:38,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 19] total 34 [2022-10-16 17:29:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646493238] [2022-10-16 17:29:38,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:38,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:29:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:29:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 17:29:38,595 INFO L87 Difference]: Start difference. First operand 677 states and 1103 transitions. Second operand has 35 states, 34 states have (on average 3.764705882352941) internal successors, (128), 34 states have internal predecessors, (128), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (33), 25 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:29:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:40,180 INFO L93 Difference]: Finished difference Result 1044 states and 1774 transitions. [2022-10-16 17:29:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:29:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.764705882352941) internal successors, (128), 34 states have internal predecessors, (128), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (33), 25 states have call predecessors, (33), 8 states have call successors, (33) Word has length 273 [2022-10-16 17:29:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:40,194 INFO L225 Difference]: With dead ends: 1044 [2022-10-16 17:29:40,194 INFO L226 Difference]: Without dead ends: 1042 [2022-10-16 17:29:40,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 601 SyntacticMatches, 27 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2939 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1062, Invalid=4194, Unknown=0, NotChecked=0, Total=5256 [2022-10-16 17:29:40,199 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 307 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:40,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 767 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:29:40,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-10-16 17:29:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 650. [2022-10-16 17:29:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 461 states have (on average 1.1301518438177873) internal successors, (521), 479 states have internal predecessors, (521), 103 states have call successors, (103), 29 states have call predecessors, (103), 77 states have return successors, (365), 141 states have call predecessors, (365), 102 states have call successors, (365) [2022-10-16 17:29:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 989 transitions. [2022-10-16 17:29:40,288 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 989 transitions. Word has length 273 [2022-10-16 17:29:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:40,289 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 989 transitions. [2022-10-16 17:29:40,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.764705882352941) internal successors, (128), 34 states have internal predecessors, (128), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (33), 25 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:29:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 989 transitions. [2022-10-16 17:29:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-16 17:29:40,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:40,296 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:40,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:40,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 17:29:40,511 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2027199120, now seen corresponding path program 2 times [2022-10-16 17:29:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:40,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118419562] [2022-10-16 17:29:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:29:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:29:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:29:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:29:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:29:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:29:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:29:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:29:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-16 17:29:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 29 proven. 82 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:29:41,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:41,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118419562] [2022-10-16 17:29:41,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118419562] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:41,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967693909] [2022-10-16 17:29:41,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:41,594 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:41,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:29:41,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:41,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:41,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 17:29:41,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:29:42,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:29:44,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967693909] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:44,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:44,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 30] total 69 [2022-10-16 17:29:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341295652] [2022-10-16 17:29:44,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-10-16 17:29:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-10-16 17:29:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=4526, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:29:44,042 INFO L87 Difference]: Start difference. First operand 650 states and 989 transitions. Second operand has 70 states, 64 states have (on average 1.75) internal successors, (112), 44 states have internal predecessors, (112), 17 states have call successors, (37), 9 states have call predecessors, (37), 15 states have return successors, (31), 22 states have call predecessors, (31), 17 states have call successors, (31) [2022-10-16 17:29:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:50,908 INFO L93 Difference]: Finished difference Result 1025 states and 1623 transitions. [2022-10-16 17:29:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-10-16 17:29:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 64 states have (on average 1.75) internal successors, (112), 44 states have internal predecessors, (112), 17 states have call successors, (37), 9 states have call predecessors, (37), 15 states have return successors, (31), 22 states have call predecessors, (31), 17 states have call successors, (31) Word has length 110 [2022-10-16 17:29:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:50,917 INFO L225 Difference]: With dead ends: 1025 [2022-10-16 17:29:50,917 INFO L226 Difference]: Without dead ends: 1024 [2022-10-16 17:29:50,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11820 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3777, Invalid=31755, Unknown=0, NotChecked=0, Total=35532 [2022-10-16 17:29:50,922 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 337 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:50,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1943 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-16 17:29:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-10-16 17:29:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 822. [2022-10-16 17:29:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 581 states have (on average 1.1135972461273667) internal successors, (647), 605 states have internal predecessors, (647), 131 states have call successors, (131), 32 states have call predecessors, (131), 101 states have return successors, (478), 184 states have call predecessors, (478), 130 states have call successors, (478) [2022-10-16 17:29:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1256 transitions. [2022-10-16 17:29:50,999 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1256 transitions. Word has length 110 [2022-10-16 17:29:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:51,000 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1256 transitions. [2022-10-16 17:29:51,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 64 states have (on average 1.75) internal successors, (112), 44 states have internal predecessors, (112), 17 states have call successors, (37), 9 states have call predecessors, (37), 15 states have return successors, (31), 22 states have call predecessors, (31), 17 states have call successors, (31) [2022-10-16 17:29:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1256 transitions. [2022-10-16 17:29:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-16 17:29:51,006 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:51,006 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:51,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:51,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 17:29:51,221 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1491899682, now seen corresponding path program 2 times [2022-10-16 17:29:51,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:51,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222518690] [2022-10-16 17:29:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:51,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:29:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-16 17:29:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-16 17:29:51,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222518690] [2022-10-16 17:29:51,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222518690] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244766375] [2022-10-16 17:29:51,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:51,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:51,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:51,812 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:51,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:29:52,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:52,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:29:52,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-16 17:29:52,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 16 proven. 43 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 17:29:53,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244766375] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:53,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:53,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 20] total 42 [2022-10-16 17:29:53,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946046376] [2022-10-16 17:29:53,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:53,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 17:29:53,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:53,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 17:29:53,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1637, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:29:53,347 INFO L87 Difference]: Start difference. First operand 822 states and 1256 transitions. Second operand has 43 states, 42 states have (on average 2.5476190476190474) internal successors, (107), 34 states have internal predecessors, (107), 9 states have call successors, (23), 6 states have call predecessors, (23), 11 states have return successors, (26), 20 states have call predecessors, (26), 9 states have call successors, (26) [2022-10-16 17:29:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:55,674 INFO L93 Difference]: Finished difference Result 1121 states and 1676 transitions. [2022-10-16 17:29:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:29:55,675 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.5476190476190474) internal successors, (107), 34 states have internal predecessors, (107), 9 states have call successors, (23), 6 states have call predecessors, (23), 11 states have return successors, (26), 20 states have call predecessors, (26), 9 states have call successors, (26) Word has length 107 [2022-10-16 17:29:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:55,684 INFO L225 Difference]: With dead ends: 1121 [2022-10-16 17:29:55,685 INFO L226 Difference]: Without dead ends: 1120 [2022-10-16 17:29:55,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 217 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=581, Invalid=5119, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 17:29:55,688 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 260 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:55,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1468 Invalid, 2357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:29:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-10-16 17:29:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 946. [2022-10-16 17:29:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 671 states have (on average 1.113263785394933) internal successors, (747), 698 states have internal predecessors, (747), 151 states have call successors, (151), 37 states have call predecessors, (151), 115 states have return successors, (556), 210 states have call predecessors, (556), 150 states have call successors, (556) [2022-10-16 17:29:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1454 transitions. [2022-10-16 17:29:55,772 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1454 transitions. Word has length 107 [2022-10-16 17:29:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:55,772 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1454 transitions. [2022-10-16 17:29:55,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.5476190476190474) internal successors, (107), 34 states have internal predecessors, (107), 9 states have call successors, (23), 6 states have call predecessors, (23), 11 states have return successors, (26), 20 states have call predecessors, (26), 9 states have call successors, (26) [2022-10-16 17:29:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1454 transitions. [2022-10-16 17:29:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-10-16 17:29:55,780 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:55,780 INFO L195 NwaCegarLoop]: trace histogram [22, 20, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:55,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:55,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:55,994 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1429461994, now seen corresponding path program 5 times [2022-10-16 17:29:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:55,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818552063] [2022-10-16 17:29:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:29:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:29:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 121 proven. 337 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2022-10-16 17:29:57,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:57,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818552063] [2022-10-16 17:29:57,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818552063] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:57,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824988171] [2022-10-16 17:29:57,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:29:57,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:57,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:57,426 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:57,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:29:57,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-10-16 17:29:57,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:57,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:29:57,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 121 proven. 337 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2022-10-16 17:29:58,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 234 proven. 286 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2022-10-16 17:30:00,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824988171] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:00,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:00,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 21] total 34 [2022-10-16 17:30:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582962255] [2022-10-16 17:30:00,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:30:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:30:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 17:30:00,671 INFO L87 Difference]: Start difference. First operand 946 states and 1454 transitions. Second operand has 35 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 8 states have call successors, (18), 2 states have call predecessors, (18), 10 states have return successors, (29), 24 states have call predecessors, (29), 8 states have call successors, (29) [2022-10-16 17:30:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:02,131 INFO L93 Difference]: Finished difference Result 1394 states and 2543 transitions. [2022-10-16 17:30:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-10-16 17:30:02,132 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 8 states have call successors, (18), 2 states have call predecessors, (18), 10 states have return successors, (29), 24 states have call predecessors, (29), 8 states have call successors, (29) Word has length 209 [2022-10-16 17:30:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:02,146 INFO L225 Difference]: With dead ends: 1394 [2022-10-16 17:30:02,147 INFO L226 Difference]: Without dead ends: 1392 [2022-10-16 17:30:02,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 455 SyntacticMatches, 25 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2697 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1012, Invalid=4100, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:30:02,151 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 334 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:02,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 639 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:30:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-10-16 17:30:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1094. [2022-10-16 17:30:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 790 states have (on average 1.0962025316455697) internal successors, (866), 817 states have internal predecessors, (866), 162 states have call successors, (162), 37 states have call predecessors, (162), 133 states have return successors, (1175), 239 states have call predecessors, (1175), 161 states have call successors, (1175) [2022-10-16 17:30:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 2203 transitions. [2022-10-16 17:30:02,325 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 2203 transitions. Word has length 209 [2022-10-16 17:30:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:02,326 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 2203 transitions. [2022-10-16 17:30:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 8 states have call successors, (18), 2 states have call predecessors, (18), 10 states have return successors, (29), 24 states have call predecessors, (29), 8 states have call successors, (29) [2022-10-16 17:30:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 2203 transitions. [2022-10-16 17:30:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-10-16 17:30:02,350 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:02,350 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 16, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:02,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 17:30:02,565 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -717530244, now seen corresponding path program 1 times [2022-10-16 17:30:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:02,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045917654] [2022-10-16 17:30:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:30:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:30:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 17:30:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 17:30:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 17:30:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 17:30:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-10-16 17:30:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 2263 trivial. 0 not checked. [2022-10-16 17:30:03,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:03,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045917654] [2022-10-16 17:30:03,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045917654] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:03,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620347998] [2022-10-16 17:30:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:03,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:03,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:03,129 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:03,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:30:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:03,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 53 conjunts are in the unsatisfiable core [2022-10-16 17:30:03,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 491 proven. 588 refuted. 0 times theorem prover too weak. 1317 trivial. 0 not checked. [2022-10-16 17:30:04,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 647 proven. 494 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2022-10-16 17:30:08,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620347998] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:08,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:08,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 24] total 48 [2022-10-16 17:30:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612362948] [2022-10-16 17:30:08,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:08,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:30:08,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:08,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:30:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1946, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:30:08,372 INFO L87 Difference]: Start difference. First operand 1094 states and 2203 transitions. Second operand has 48 states, 47 states have (on average 3.595744680851064) internal successors, (169), 44 states have internal predecessors, (169), 14 states have call successors, (35), 5 states have call predecessors, (35), 14 states have return successors, (50), 30 states have call predecessors, (50), 14 states have call successors, (50) [2022-10-16 17:30:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:11,730 INFO L93 Difference]: Finished difference Result 2073 states and 5302 transitions. [2022-10-16 17:30:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-10-16 17:30:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.595744680851064) internal successors, (169), 44 states have internal predecessors, (169), 14 states have call successors, (35), 5 states have call predecessors, (35), 14 states have return successors, (50), 30 states have call predecessors, (50), 14 states have call successors, (50) Word has length 294 [2022-10-16 17:30:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:11,753 INFO L225 Difference]: With dead ends: 2073 [2022-10-16 17:30:11,753 INFO L226 Difference]: Without dead ends: 1735 [2022-10-16 17:30:11,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 612 SyntacticMatches, 33 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3995 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1778, Invalid=9778, Unknown=0, NotChecked=0, Total=11556 [2022-10-16 17:30:11,766 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 586 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:11,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1577 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:30:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-10-16 17:30:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1137. [2022-10-16 17:30:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 829 states have (on average 1.0916767189384802) internal successors, (905), 856 states have internal predecessors, (905), 159 states have call successors, (159), 37 states have call predecessors, (159), 140 states have return successors, (1211), 243 states have call predecessors, (1211), 158 states have call successors, (1211) [2022-10-16 17:30:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2275 transitions. [2022-10-16 17:30:12,064 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2275 transitions. Word has length 294 [2022-10-16 17:30:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:12,064 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 2275 transitions. [2022-10-16 17:30:12,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.595744680851064) internal successors, (169), 44 states have internal predecessors, (169), 14 states have call successors, (35), 5 states have call predecessors, (35), 14 states have return successors, (50), 30 states have call predecessors, (50), 14 states have call successors, (50) [2022-10-16 17:30:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2275 transitions. [2022-10-16 17:30:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-10-16 17:30:12,080 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:12,080 INFO L195 NwaCegarLoop]: trace histogram [32, 30, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:12,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:12,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 17:30:12,295 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1941208017, now seen corresponding path program 6 times [2022-10-16 17:30:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:12,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202056616] [2022-10-16 17:30:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:30:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:30:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-16 17:30:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 367 proven. 758 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2022-10-16 17:30:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202056616] [2022-10-16 17:30:14,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202056616] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:14,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175871616] [2022-10-16 17:30:14,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:30:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:14,826 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:14,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:30:15,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-10-16 17:30:15,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:15,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:30:15,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:15,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-16 17:30:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 2694 trivial. 0 not checked. [2022-10-16 17:30:15,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 58 proven. 173 refuted. 0 times theorem prover too weak. 2490 trivial. 0 not checked. [2022-10-16 17:30:16,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175871616] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:16,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:16,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 13] total 40 [2022-10-16 17:30:16,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552959305] [2022-10-16 17:30:16,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:16,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-16 17:30:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-16 17:30:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 17:30:16,019 INFO L87 Difference]: Start difference. First operand 1137 states and 2275 transitions. Second operand has 40 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 12 states have call successors, (29), 4 states have call predecessors, (29), 16 states have return successors, (35), 22 states have call predecessors, (35), 12 states have call successors, (35) [2022-10-16 17:30:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:18,044 INFO L93 Difference]: Finished difference Result 2248 states and 4578 transitions. [2022-10-16 17:30:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-16 17:30:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 12 states have call successors, (29), 4 states have call predecessors, (29), 16 states have return successors, (35), 22 states have call predecessors, (35), 12 states have call successors, (35) Word has length 289 [2022-10-16 17:30:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:18,059 INFO L225 Difference]: With dead ends: 2248 [2022-10-16 17:30:18,059 INFO L226 Difference]: Without dead ends: 1578 [2022-10-16 17:30:18,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=745, Invalid=6061, Unknown=0, NotChecked=0, Total=6806 [2022-10-16 17:30:18,070 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 247 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:18,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1177 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 946 Invalid, 0 Unknown, 210 Unchecked, 0.7s Time] [2022-10-16 17:30:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-10-16 17:30:18,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1231. [2022-10-16 17:30:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 904 states have (on average 1.0907079646017699) internal successors, (986), 932 states have internal predecessors, (986), 163 states have call successors, (163), 38 states have call predecessors, (163), 155 states have return successors, (1480), 260 states have call predecessors, (1480), 162 states have call successors, (1480) [2022-10-16 17:30:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 2629 transitions. [2022-10-16 17:30:18,266 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 2629 transitions. Word has length 289 [2022-10-16 17:30:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:18,266 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 2629 transitions. [2022-10-16 17:30:18,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 12 states have call successors, (29), 4 states have call predecessors, (29), 16 states have return successors, (35), 22 states have call predecessors, (35), 12 states have call successors, (35) [2022-10-16 17:30:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 2629 transitions. [2022-10-16 17:30:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-10-16 17:30:18,283 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:18,283 INFO L195 NwaCegarLoop]: trace histogram [40, 37, 20, 20, 20, 19, 19, 19, 18, 18, 17, 17, 17, 17, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:18,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:18,497 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1313906222, now seen corresponding path program 7 times [2022-10-16 17:30:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:18,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236715982] [2022-10-16 17:30:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:30:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 17:30:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-10-16 17:30:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4159 backedges. 1188 proven. 718 refuted. 0 times theorem prover too weak. 2253 trivial. 0 not checked. [2022-10-16 17:30:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:20,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236715982] [2022-10-16 17:30:20,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236715982] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:20,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956411621] [2022-10-16 17:30:20,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:30:20,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:20,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:20,699 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:20,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 17:30:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:30:21,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4159 backedges. 1183 proven. 723 refuted. 0 times theorem prover too weak. 2253 trivial. 0 not checked. [2022-10-16 17:30:21,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4159 backedges. 1360 proven. 603 refuted. 0 times theorem prover too weak. 2196 trivial. 0 not checked. [2022-10-16 17:30:26,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956411621] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:26,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:26,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 44 [2022-10-16 17:30:26,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418635912] [2022-10-16 17:30:26,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:26,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:30:26,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:30:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=1528, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:30:26,115 INFO L87 Difference]: Start difference. First operand 1231 states and 2629 transitions. Second operand has 45 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (40), 32 states have call predecessors, (40), 9 states have call successors, (40) [2022-10-16 17:30:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:28,371 INFO L93 Difference]: Finished difference Result 2056 states and 5759 transitions. [2022-10-16 17:30:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:30:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (40), 32 states have call predecessors, (40), 9 states have call successors, (40) Word has length 336 [2022-10-16 17:30:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:28,413 INFO L225 Difference]: With dead ends: 2056 [2022-10-16 17:30:28,414 INFO L226 Difference]: Without dead ends: 2054 [2022-10-16 17:30:28,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 747 SyntacticMatches, 37 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5636 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1818, Invalid=7494, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 17:30:28,423 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 404 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:28,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 831 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:30:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-10-16 17:30:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1512. [2022-10-16 17:30:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1132 states have (on average 1.0724381625441697) internal successors, (1214), 1160 states have internal predecessors, (1214), 181 states have call successors, (181), 38 states have call predecessors, (181), 190 states have return successors, (3800), 313 states have call predecessors, (3800), 180 states have call successors, (3800) [2022-10-16 17:30:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5195 transitions. [2022-10-16 17:30:28,952 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5195 transitions. Word has length 336 [2022-10-16 17:30:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:28,953 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 5195 transitions. [2022-10-16 17:30:28,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (40), 32 states have call predecessors, (40), 9 states have call successors, (40) [2022-10-16 17:30:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5195 transitions. [2022-10-16 17:30:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-10-16 17:30:28,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:28,986 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:29,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:29,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:29,201 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1308197066, now seen corresponding path program 6 times [2022-10-16 17:30:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:29,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487647495] [2022-10-16 17:30:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:30:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:30:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-16 17:30:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 369 proven. 694 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2022-10-16 17:30:31,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487647495] [2022-10-16 17:30:31,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487647495] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684208099] [2022-10-16 17:30:31,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:30:31,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:31,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:31,189 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:31,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 17:30:31,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-10-16 17:30:31,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:31,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:30:31,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 369 proven. 694 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2022-10-16 17:30:32,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 547 proven. 596 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-10-16 17:30:36,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684208099] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:36,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:36,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 39 [2022-10-16 17:30:36,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145737150] [2022-10-16 17:30:36,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:36,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-16 17:30:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-16 17:30:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 17:30:36,756 INFO L87 Difference]: Start difference. First operand 1512 states and 5195 transitions. Second operand has 40 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 39 states have internal predecessors, (136), 9 states have call successors, (20), 2 states have call predecessors, (20), 11 states have return successors, (35), 28 states have call predecessors, (35), 9 states have call successors, (35) [2022-10-16 17:30:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:38,834 INFO L93 Difference]: Finished difference Result 2946 states and 14089 transitions. [2022-10-16 17:30:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-10-16 17:30:38,835 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 39 states have internal predecessors, (136), 9 states have call successors, (20), 2 states have call predecessors, (20), 11 states have return successors, (35), 28 states have call predecessors, (35), 9 states have call successors, (35) Word has length 271 [2022-10-16 17:30:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:38,914 INFO L225 Difference]: With dead ends: 2946 [2022-10-16 17:30:38,914 INFO L226 Difference]: Without dead ends: 2944 [2022-10-16 17:30:38,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 605 SyntacticMatches, 39 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4657 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1581, Invalid=6251, Unknown=0, NotChecked=0, Total=7832 [2022-10-16 17:30:38,927 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 381 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:38,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 639 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:30:38,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2022-10-16 17:30:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1891. [2022-10-16 17:30:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1439 states have (on average 1.0569840166782487) internal successors, (1521), 1467 states have internal predecessors, (1521), 206 states have call successors, (206), 38 states have call predecessors, (206), 237 states have return successors, (9005), 385 states have call predecessors, (9005), 205 states have call successors, (9005) [2022-10-16 17:30:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 10732 transitions. [2022-10-16 17:30:41,591 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 10732 transitions. Word has length 271 [2022-10-16 17:30:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:41,591 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 10732 transitions. [2022-10-16 17:30:41,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 39 states have internal predecessors, (136), 9 states have call successors, (20), 2 states have call predecessors, (20), 11 states have return successors, (35), 28 states have call predecessors, (35), 9 states have call successors, (35) [2022-10-16 17:30:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 10732 transitions. [2022-10-16 17:30:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-10-16 17:30:41,637 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:41,638 INFO L195 NwaCegarLoop]: trace histogram [34, 32, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:41,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-10-16 17:30:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:41,853 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 385279215, now seen corresponding path program 7 times [2022-10-16 17:30:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104973858] [2022-10-16 17:30:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:30:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:30:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 17:30:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:30:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 394 proven. 921 refuted. 0 times theorem prover too weak. 1839 trivial. 0 not checked. [2022-10-16 17:30:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:44,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104973858] [2022-10-16 17:30:44,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104973858] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:44,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681346202] [2022-10-16 17:30:44,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:30:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:44,391 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:44,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 17:30:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 17:30:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 394 proven. 921 refuted. 0 times theorem prover too weak. 1839 trivial. 0 not checked. [2022-10-16 17:30:45,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 599 proven. 783 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2022-10-16 17:30:51,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681346202] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:51,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:51,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 25] total 44 [2022-10-16 17:30:51,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085228118] [2022-10-16 17:30:51,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:51,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:30:51,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:30:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=1522, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:30:51,024 INFO L87 Difference]: Start difference. First operand 1891 states and 10732 transitions. Second operand has 45 states, 44 states have (on average 3.409090909090909) internal successors, (150), 44 states have internal predecessors, (150), 10 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (38), 32 states have call predecessors, (38), 10 states have call successors, (38) [2022-10-16 17:30:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:53,804 INFO L93 Difference]: Finished difference Result 3683 states and 25749 transitions. [2022-10-16 17:30:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-10-16 17:30:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.409090909090909) internal successors, (150), 44 states have internal predecessors, (150), 10 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (38), 32 states have call predecessors, (38), 10 states have call successors, (38) Word has length 320 [2022-10-16 17:30:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:53,959 INFO L225 Difference]: With dead ends: 3683 [2022-10-16 17:30:53,959 INFO L226 Difference]: Without dead ends: 3681 [2022-10-16 17:30:53,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 700 SyntacticMatches, 44 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6611 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2160, Invalid=8552, Unknown=0, NotChecked=0, Total=10712 [2022-10-16 17:30:53,994 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 462 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:53,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 703 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:30:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2022-10-16 17:31:00,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1813. [2022-10-16 17:31:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1375 states have (on average 1.0596363636363637) internal successors, (1457), 1403 states have internal predecessors, (1457), 202 states have call successors, (202), 38 states have call predecessors, (202), 227 states have return successors, (7858), 371 states have call predecessors, (7858), 201 states have call successors, (7858) [2022-10-16 17:31:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 9517 transitions. [2022-10-16 17:31:00,799 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 9517 transitions. Word has length 320 [2022-10-16 17:31:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:00,800 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 9517 transitions. [2022-10-16 17:31:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.409090909090909) internal successors, (150), 44 states have internal predecessors, (150), 10 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (38), 32 states have call predecessors, (38), 10 states have call successors, (38) [2022-10-16 17:31:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 9517 transitions. [2022-10-16 17:31:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 17:31:00,823 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:00,824 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:00,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:01,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:01,025 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:31:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash -762860675, now seen corresponding path program 2 times [2022-10-16 17:31:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:01,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799089883] [2022-10-16 17:31:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:31:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:31:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-16 17:31:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:31:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-16 17:31:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799089883] [2022-10-16 17:31:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799089883] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380274344] [2022-10-16 17:31:01,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:01,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:01,830 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:01,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-16 17:31:02,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:02,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:02,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-16 17:31:02,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-16 17:31:02,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-10-16 17:31:04,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380274344] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:04,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:04,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 26] total 54 [2022-10-16 17:31:04,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251572556] [2022-10-16 17:31:04,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-10-16 17:31:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-10-16 17:31:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2751, Unknown=0, NotChecked=0, Total=2970 [2022-10-16 17:31:04,181 INFO L87 Difference]: Start difference. First operand 1813 states and 9517 transitions. Second operand has 55 states, 52 states have (on average 2.3653846153846154) internal successors, (123), 41 states have internal predecessors, (123), 13 states have call successors, (28), 6 states have call predecessors, (28), 14 states have return successors, (30), 24 states have call predecessors, (30), 13 states have call successors, (30) [2022-10-16 17:31:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:07,644 INFO L93 Difference]: Finished difference Result 2533 states and 11098 transitions. [2022-10-16 17:31:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-10-16 17:31:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 52 states have (on average 2.3653846153846154) internal successors, (123), 41 states have internal predecessors, (123), 13 states have call successors, (28), 6 states have call predecessors, (28), 14 states have return successors, (30), 24 states have call predecessors, (30), 13 states have call successors, (30) Word has length 121 [2022-10-16 17:31:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:07,708 INFO L225 Difference]: With dead ends: 2533 [2022-10-16 17:31:07,708 INFO L226 Difference]: Without dead ends: 2532 [2022-10-16 17:31:07,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 243 SyntacticMatches, 7 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=952, Invalid=9968, Unknown=0, NotChecked=0, Total=10920 [2022-10-16 17:31:07,722 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 376 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:07,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1591 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:31:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-10-16 17:31:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1962. [2022-10-16 17:31:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1489 states have (on average 1.0591000671591673) internal successors, (1577), 1514 states have internal predecessors, (1577), 216 states have call successors, (216), 41 states have call predecessors, (216), 248 states have return successors, (8395), 406 states have call predecessors, (8395), 215 states have call successors, (8395) [2022-10-16 17:31:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 10188 transitions. [2022-10-16 17:31:09,536 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 10188 transitions. Word has length 121 [2022-10-16 17:31:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:09,536 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 10188 transitions. [2022-10-16 17:31:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 52 states have (on average 2.3653846153846154) internal successors, (123), 41 states have internal predecessors, (123), 13 states have call successors, (28), 6 states have call predecessors, (28), 14 states have return successors, (30), 24 states have call predecessors, (30), 13 states have call successors, (30) [2022-10-16 17:31:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 10188 transitions. [2022-10-16 17:31:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-10-16 17:31:09,561 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:09,563 INFO L195 NwaCegarLoop]: trace histogram [41, 38, 21, 20, 20, 20, 20, 20, 18, 18, 17, 17, 17, 17, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:09,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:09,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-10-16 17:31:09,777 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:31:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1704603961, now seen corresponding path program 8 times [2022-10-16 17:31:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:09,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372355535] [2022-10-16 17:31:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:31:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:31:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 17:31:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-10-16 17:31:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 17:31:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:31:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4351 backedges. 1101 proven. 843 refuted. 0 times theorem prover too weak. 2407 trivial. 0 not checked. [2022-10-16 17:31:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:12,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372355535] [2022-10-16 17:31:12,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372355535] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:12,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805187761] [2022-10-16 17:31:12,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:12,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:12,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:12,568 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:12,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-16 17:31:13,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:13,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:13,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 17:31:13,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4351 backedges. 1086 proven. 858 refuted. 0 times theorem prover too weak. 2407 trivial. 0 not checked. [2022-10-16 17:31:13,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4351 backedges. 1287 proven. 743 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2022-10-16 17:31:18,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805187761] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:18,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:18,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 25] total 43 [2022-10-16 17:31:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481087699] [2022-10-16 17:31:18,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:18,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 17:31:18,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:18,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 17:31:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 17:31:18,820 INFO L87 Difference]: Start difference. First operand 1962 states and 10188 transitions. Second operand has 44 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 43 states have internal predecessors, (147), 10 states have call successors, (21), 2 states have call predecessors, (21), 12 states have return successors, (39), 31 states have call predecessors, (39), 10 states have call successors, (39) [2022-10-16 17:31:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:21,522 INFO L93 Difference]: Finished difference Result 3570 states and 24606 transitions. [2022-10-16 17:31:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-10-16 17:31:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 43 states have internal predecessors, (147), 10 states have call successors, (21), 2 states have call predecessors, (21), 12 states have return successors, (39), 31 states have call predecessors, (39), 10 states have call successors, (39) Word has length 342 [2022-10-16 17:31:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:21,813 INFO L225 Difference]: With dead ends: 3570 [2022-10-16 17:31:21,814 INFO L226 Difference]: Without dead ends: 3568 [2022-10-16 17:31:21,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 762 SyntacticMatches, 47 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6249 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2029, Invalid=8071, Unknown=0, NotChecked=0, Total=10100 [2022-10-16 17:31:21,836 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 442 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:21,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 639 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:31:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-10-16 17:31:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 2096. [2022-10-16 17:31:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1596 states have (on average 1.055137844611529) internal successors, (1684), 1621 states have internal predecessors, (1684), 227 states have call successors, (227), 41 states have call predecessors, (227), 264 states have return successors, (10977), 433 states have call predecessors, (10977), 226 states have call successors, (10977) [2022-10-16 17:31:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 12888 transitions. [2022-10-16 17:31:26,799 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 12888 transitions. Word has length 342 [2022-10-16 17:31:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:26,800 INFO L495 AbstractCegarLoop]: Abstraction has 2096 states and 12888 transitions. [2022-10-16 17:31:26,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 43 states have internal predecessors, (147), 10 states have call successors, (21), 2 states have call predecessors, (21), 12 states have return successors, (39), 31 states have call predecessors, (39), 10 states have call successors, (39) [2022-10-16 17:31:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 12888 transitions. [2022-10-16 17:31:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-10-16 17:31:26,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:26,833 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:26,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:27,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:27,047 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:31:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash 384722448, now seen corresponding path program 2 times [2022-10-16 17:31:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:27,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732440219] [2022-10-16 17:31:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:27,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:31:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:31:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 17:31:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-16 17:31:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-16 17:31:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-10-16 17:31:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 10 proven. 84 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-10-16 17:31:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732440219] [2022-10-16 17:31:28,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732440219] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113898980] [2022-10-16 17:31:28,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:28,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:28,152 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:28,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-16 17:31:28,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:28,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:28,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 17:31:28,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 11 proven. 83 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-10-16 17:31:29,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 41 proven. 75 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-10-16 17:31:30,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113898980] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:30,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:30,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 28] total 55 [2022-10-16 17:31:30,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443696808] [2022-10-16 17:31:30,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:30,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-10-16 17:31:30,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:30,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-10-16 17:31:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-10-16 17:31:30,613 INFO L87 Difference]: Start difference. First operand 2096 states and 12888 transitions. Second operand has 56 states, 55 states have (on average 2.309090909090909) internal successors, (127), 43 states have internal predecessors, (127), 12 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (31), 24 states have call predecessors, (31), 12 states have call successors, (31) [2022-10-16 17:31:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:34,464 INFO L93 Difference]: Finished difference Result 3060 states and 15340 transitions. [2022-10-16 17:31:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-10-16 17:31:34,465 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.309090909090909) internal successors, (127), 43 states have internal predecessors, (127), 12 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (31), 24 states have call predecessors, (31), 12 states have call successors, (31) Word has length 157 [2022-10-16 17:31:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:34,556 INFO L225 Difference]: With dead ends: 3060 [2022-10-16 17:31:34,557 INFO L226 Difference]: Without dead ends: 3059 [2022-10-16 17:31:34,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 329 SyntacticMatches, 8 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4089 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1196, Invalid=11236, Unknown=0, NotChecked=0, Total=12432 [2022-10-16 17:31:34,570 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 413 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:34,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1616 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:31:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states.