/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_rec_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:29:04,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:29:04,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:29:04,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:29:04,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:29:04,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:29:04,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:29:04,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:29:04,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:29:04,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:29:04,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:29:04,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:29:04,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:29:04,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:29:04,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:29:04,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:29:04,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:29:04,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:29:04,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:29:04,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:29:04,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:29:04,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:29:04,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:29:04,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:29:04,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:29:04,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:29:04,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:29:04,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:29:04,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:29:04,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:29:04,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:29:04,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:29:04,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:29:04,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:29:04,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:29:04,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:29:04,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:29:04,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:29:04,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:29:04,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:29:04,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:29:04,440 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 17:29:04,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:29:04,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:29:04,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:29:04,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:29:04,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:29:04,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:29:04,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:29:04,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:29:04,474 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:29:04,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:29:04,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:29:04,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:29:04,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:29:04,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:29:04,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:29:04,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:29:04,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:29:04,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:29:04,476 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:29:04,476 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:29:04,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:29:04,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:29:04,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:29:04,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:29:04,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:29:04,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:29:04,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:29:04,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:29:04,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:29:04,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:29:04,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:29:04,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:29:04,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:29:04,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:29:04,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:29:04,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:29:04,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:29:04,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:29:04,927 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:29:04,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2022-10-16 17:29:05,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77af28da/1819984782934ffaa78632f27e4a67d0/FLAG99fb76268 [2022-10-16 17:29:05,684 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:29:05,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2022-10-16 17:29:05,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77af28da/1819984782934ffaa78632f27e4a67d0/FLAG99fb76268 [2022-10-16 17:29:06,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77af28da/1819984782934ffaa78632f27e4a67d0 [2022-10-16 17:29:06,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:29:06,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:29:06,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:29:06,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:29:06,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:29:06,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd9210c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06, skipping insertion in model container [2022-10-16 17:29:06,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:29:06,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:29:06,262 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_rec_incorrect.c[618,631] [2022-10-16 17:29:06,290 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:29:06,292 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:29:06,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:29:06,324 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:29:06,336 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_rec_incorrect.c[618,631] [2022-10-16 17:29:06,342 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:29:06,343 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:29:06,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:29:06,379 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:29:06,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06 WrapperNode [2022-10-16 17:29:06,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:29:06,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:29:06,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:29:06,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:29:06,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,427 INFO L138 Inliner]: procedures = 29, calls = 58, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2022-10-16 17:29:06,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:29:06,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:29:06,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:29:06,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:29:06,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:29:06,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:29:06,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:29:06,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:29:06,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (1/1) ... [2022-10-16 17:29:06,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:29:06,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:06,530 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 17:29:06,549 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 17:29:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:29:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 17:29:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 17:29:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2022-10-16 17:29:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2022-10-16 17:29:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:29:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure min [2022-10-16 17:29:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2022-10-16 17:29:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:29:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 17:29:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 17:29:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 17:29:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2022-10-16 17:29:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2022-10-16 17:29:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:29:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:29:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure size [2022-10-16 17:29:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2022-10-16 17:29:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:29:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:29:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-16 17:29:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-16 17:29:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2022-10-16 17:29:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2022-10-16 17:29:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:29:06,707 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:29:06,710 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:29:07,217 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:29:07,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:29:07,235 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 17:29:07,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:29:07 BoogieIcfgContainer [2022-10-16 17:29:07,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:29:07,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:29:07,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:29:07,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:29:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:29:06" (1/3) ... [2022-10-16 17:29:07,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78986f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:29:07, skipping insertion in model container [2022-10-16 17:29:07,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:29:06" (2/3) ... [2022-10-16 17:29:07,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78986f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:29:07, skipping insertion in model container [2022-10-16 17:29:07,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:29:07" (3/3) ... [2022-10-16 17:29:07,252 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2022-10-16 17:29:07,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:29:07,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:29:07,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:29:07,394 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;@4fe5bce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:29:07,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:29:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 64 states have (on average 1.34375) internal successors, (86), 76 states have internal predecessors, (86), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-16 17:29:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:29:07,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:07,418 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 17:29:07,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:07,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1378446482, now seen corresponding path program 1 times [2022-10-16 17:29:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:07,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869105251] [2022-10-16 17:29:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:07,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:08,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:08,277 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 17:29:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869105251] [2022-10-16 17:29:08,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869105251] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:08,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240753326] [2022-10-16 17:29:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:08,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:08,282 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 17:29:08,303 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 17:29:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:08,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:29:08,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:08,544 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 17:29:08,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:08,637 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 17:29:08,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240753326] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:08,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:08,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2022-10-16 17:29:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608854147] [2022-10-16 17:29:08,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:08,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:29:08,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:29:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:29:08,684 INFO L87 Difference]: Start difference. First operand has 106 states, 64 states have (on average 1.34375) internal successors, (86), 76 states have internal predecessors, (86), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) 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 17:29:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:09,587 INFO L93 Difference]: Finished difference Result 261 states and 338 transitions. [2022-10-16 17:29:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:29:09,590 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 17:29:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:09,603 INFO L225 Difference]: With dead ends: 261 [2022-10-16 17:29:09,603 INFO L226 Difference]: Without dead ends: 168 [2022-10-16 17:29:09,609 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 17:29:09,613 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 130 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:09,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 689 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-10-16 17:29:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 131. [2022-10-16 17:29:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 90 states have internal predecessors, (96), 31 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (39), 32 states have call predecessors, (39), 31 states have call successors, (39) [2022-10-16 17:29:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 166 transitions. [2022-10-16 17:29:09,687 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 166 transitions. Word has length 29 [2022-10-16 17:29:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:09,687 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 166 transitions. [2022-10-16 17:29:09,688 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 17:29:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 166 transitions. [2022-10-16 17:29:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:29:09,692 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:09,692 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 17:29:09,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 17:29:09,893 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 17:29:09,894 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 17:29:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1855251267, now seen corresponding path program 1 times [2022-10-16 17:29:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:09,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234771581] [2022-10-16 17:29:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:29:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:29:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,192 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 17:29:10,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:10,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234771581] [2022-10-16 17:29:10,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234771581] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:10,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243190054] [2022-10-16 17:29:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:10,200 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 17:29:10,219 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 17:29:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:10,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:29:10,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:10,499 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 17:29:10,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:10,803 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 17:29:10,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243190054] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:10,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:10,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-10-16 17:29:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27335324] [2022-10-16 17:29:10,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:10,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:29:10,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:10,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:29:10,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:29:10,808 INFO L87 Difference]: Start difference. First operand 131 states and 166 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 17:29:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:12,941 INFO L93 Difference]: Finished difference Result 304 states and 379 transitions. [2022-10-16 17:29:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:29:12,942 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 17:29:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:12,946 INFO L225 Difference]: With dead ends: 304 [2022-10-16 17:29:12,946 INFO L226 Difference]: Without dead ends: 244 [2022-10-16 17:29:12,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=447, Invalid=3213, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:29:12,951 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 350 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:12,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1095 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:29:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-10-16 17:29:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 179. [2022-10-16 17:29:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 124 states have internal predecessors, (136), 40 states have call successors, (40), 12 states have call predecessors, (40), 16 states have return successors, (52), 42 states have call predecessors, (52), 40 states have call successors, (52) [2022-10-16 17:29:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 228 transitions. [2022-10-16 17:29:12,987 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 228 transitions. Word has length 36 [2022-10-16 17:29:12,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:12,988 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 228 transitions. [2022-10-16 17:29:12,988 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 17:29:12,988 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 228 transitions. [2022-10-16 17:29:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 17:29:12,991 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:12,991 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-10-16 17:29:13,026 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 17:29:13,205 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 17:29:13,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -95451186, now seen corresponding path program 1 times [2022-10-16 17:29:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:13,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835697600] [2022-10-16 17:29:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:13,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:29:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:29:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 17:29:13,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835697600] [2022-10-16 17:29:13,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835697600] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:13,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465044480] [2022-10-16 17:29:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:13,525 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 17:29:13,549 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 17:29:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:29:13,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 17:29:13,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 17:29:13,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465044480] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:13,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:13,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2022-10-16 17:29:13,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065262983] [2022-10-16 17:29:13,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:13,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:29:13,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:29:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:29:13,764 INFO L87 Difference]: Start difference. First operand 179 states and 228 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, (15), 3 states have call predecessors, (15), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:29:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:14,558 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2022-10-16 17:29:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:29:14,559 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, (15), 3 states have call predecessors, (15), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 43 [2022-10-16 17:29:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:14,562 INFO L225 Difference]: With dead ends: 334 [2022-10-16 17:29:14,562 INFO L226 Difference]: Without dead ends: 212 [2022-10-16 17:29:14,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 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 17:29:14,566 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 118 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:14,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1133 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-16 17:29:14,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 181. [2022-10-16 17:29:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 126 states have internal predecessors, (137), 40 states have call successors, (40), 12 states have call predecessors, (40), 17 states have return successors, (55), 42 states have call predecessors, (55), 40 states have call successors, (55) [2022-10-16 17:29:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2022-10-16 17:29:14,597 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 43 [2022-10-16 17:29:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:14,598 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2022-10-16 17:29:14,598 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, (15), 3 states have call predecessors, (15), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:29:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2022-10-16 17:29:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 17:29:14,602 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:14,602 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] [2022-10-16 17:29:14,640 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 17:29:14,818 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 17:29:14,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1345913120, now seen corresponding path program 1 times [2022-10-16 17:29:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:14,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487046488] [2022-10-16 17:29:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:14,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 17:29:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:29:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487046488] [2022-10-16 17:29:15,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487046488] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:15,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:29:15,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:29:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213997271] [2022-10-16 17:29:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:15,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:29:15,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:29:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:29:15,060 INFO L87 Difference]: Start difference. First operand 181 states and 232 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 17:29:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:15,291 INFO L93 Difference]: Finished difference Result 198 states and 255 transitions. [2022-10-16 17:29:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:29:15,292 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 54 [2022-10-16 17:29:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:15,300 INFO L225 Difference]: With dead ends: 198 [2022-10-16 17:29:15,300 INFO L226 Difference]: Without dead ends: 197 [2022-10-16 17:29:15,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 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 17:29:15,306 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 52 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:15,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 253 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:29:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-10-16 17:29:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2022-10-16 17:29:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 117 states have (on average 1.205128205128205) internal successors, (141), 129 states have internal predecessors, (141), 40 states have call successors, (40), 12 states have call predecessors, (40), 17 states have return successors, (55), 43 states have call predecessors, (55), 40 states have call successors, (55) [2022-10-16 17:29:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 236 transitions. [2022-10-16 17:29:15,370 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 236 transitions. Word has length 54 [2022-10-16 17:29:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:15,371 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 236 transitions. [2022-10-16 17:29:15,371 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 17:29:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 236 transitions. [2022-10-16 17:29:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-16 17:29:15,374 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:15,375 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 17:29:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:29:15,375 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 17:29:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -494027699, now seen corresponding path program 1 times [2022-10-16 17:29:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:15,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642511298] [2022-10-16 17:29:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:29:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:29:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,860 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 17:29:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:15,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642511298] [2022-10-16 17:29:15,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642511298] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:15,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578893601] [2022-10-16 17:29:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:15,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:15,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:15,862 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 17:29:15,887 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 17:29:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:15,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:29:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:16,009 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 17:29:16,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:29:16,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578893601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:16,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:29:16,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [15] total 16 [2022-10-16 17:29:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415010937] [2022-10-16 17:29:16,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:16,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:29:16,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:16,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:29:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:29:16,013 INFO L87 Difference]: Start difference. First operand 185 states and 236 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 17:29:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:16,031 INFO L93 Difference]: Finished difference Result 185 states and 236 transitions. [2022-10-16 17:29:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:29:16,032 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 17:29:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:16,034 INFO L225 Difference]: With dead ends: 185 [2022-10-16 17:29:16,035 INFO L226 Difference]: Without dead ends: 184 [2022-10-16 17:29:16,035 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 17:29:16,036 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 233 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 17:29:16,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 233 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:29:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-10-16 17:29:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-10-16 17:29:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.170940170940171) internal successors, (137), 128 states have internal predecessors, (137), 40 states have call successors, (40), 12 states have call predecessors, (40), 17 states have return successors, (55), 43 states have call predecessors, (55), 40 states have call successors, (55) [2022-10-16 17:29:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 232 transitions. [2022-10-16 17:29:16,057 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 232 transitions. Word has length 63 [2022-10-16 17:29:16,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:16,057 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 232 transitions. [2022-10-16 17:29:16,058 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 17:29:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 232 transitions. [2022-10-16 17:29:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 17:29:16,061 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:16,061 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 17:29:16,097 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 17:29:16,275 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 17:29:16,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2008353417, now seen corresponding path program 1 times [2022-10-16 17:29:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:16,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188207537] [2022-10-16 17:29:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:29:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:29:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,616 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 17:29:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:16,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188207537] [2022-10-16 17:29:16,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188207537] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:16,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926481777] [2022-10-16 17:29:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:16,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:16,618 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 17:29:16,637 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 17:29:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:29:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:16,821 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 17:29:16,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:17,015 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 17:29:17,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926481777] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:17,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:17,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 15 [2022-10-16 17:29:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338124330] [2022-10-16 17:29:17,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:29:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:29:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:29:17,018 INFO L87 Difference]: Start difference. First operand 184 states and 232 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 17:29:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:17,599 INFO L93 Difference]: Finished difference Result 224 states and 292 transitions. [2022-10-16 17:29:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:29:17,600 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 17:29:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:17,603 INFO L225 Difference]: With dead ends: 224 [2022-10-16 17:29:17,603 INFO L226 Difference]: Without dead ends: 222 [2022-10-16 17:29:17,604 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 17:29:17,605 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 78 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:17,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 622 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:29:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-10-16 17:29:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 203. [2022-10-16 17:29:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 143 states have internal predecessors, (154), 41 states have call successors, (41), 12 states have call predecessors, (41), 19 states have return successors, (69), 47 states have call predecessors, (69), 41 states have call successors, (69) [2022-10-16 17:29:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 264 transitions. [2022-10-16 17:29:17,628 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 264 transitions. Word has length 73 [2022-10-16 17:29:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:17,629 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 264 transitions. [2022-10-16 17:29:17,629 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 17:29:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 264 transitions. [2022-10-16 17:29:17,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 17:29:17,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:17,632 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 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] [2022-10-16 17:29:17,673 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 17:29:17,848 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 17:29:17,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash 12222740, now seen corresponding path program 1 times [2022-10-16 17:29:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:17,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036462289] [2022-10-16 17:29:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:29:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:29:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:29:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036462289] [2022-10-16 17:29:18,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036462289] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:18,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:29:18,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:29:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879832516] [2022-10-16 17:29:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:29:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:29:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:29:18,045 INFO L87 Difference]: Start difference. First operand 203 states and 264 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 17:29:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:18,289 INFO L93 Difference]: Finished difference Result 222 states and 289 transitions. [2022-10-16 17:29:18,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:29:18,290 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 72 [2022-10-16 17:29:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:18,296 INFO L225 Difference]: With dead ends: 222 [2022-10-16 17:29:18,296 INFO L226 Difference]: Without dead ends: 221 [2022-10-16 17:29:18,297 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 17:29:18,298 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 54 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:18,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 311 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:29:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-10-16 17:29:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-10-16 17:29:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.162962962962963) internal successors, (157), 144 states have internal predecessors, (157), 41 states have call successors, (41), 12 states have call predecessors, (41), 19 states have return successors, (69), 48 states have call predecessors, (69), 41 states have call successors, (69) [2022-10-16 17:29:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 267 transitions. [2022-10-16 17:29:18,325 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 267 transitions. Word has length 72 [2022-10-16 17:29:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 267 transitions. [2022-10-16 17:29:18,326 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 17:29:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 267 transitions. [2022-10-16 17:29:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 17:29:18,330 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:18,330 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 17:29:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:29:18,331 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 17:29:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash -186963900, now seen corresponding path program 1 times [2022-10-16 17:29:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:18,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261000737] [2022-10-16 17:29:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:29:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:29:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:29:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,938 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 17:29:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261000737] [2022-10-16 17:29:18,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261000737] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947152054] [2022-10-16 17:29:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:18,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:18,941 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 17:29:18,964 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 17:29:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:19,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:29:19,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:19,408 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 17:29:19,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:20,208 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 17:29:20,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947152054] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:20,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:20,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2022-10-16 17:29:20,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091330756] [2022-10-16 17:29:20,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:29:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:29:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:29:20,251 INFO L87 Difference]: Start difference. First operand 205 states and 267 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 17:29:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:22,501 INFO L93 Difference]: Finished difference Result 369 states and 475 transitions. [2022-10-16 17:29:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:29:22,502 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 17:29:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:22,504 INFO L225 Difference]: With dead ends: 369 [2022-10-16 17:29:22,504 INFO L226 Difference]: Without dead ends: 199 [2022-10-16 17:29:22,507 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 17:29:22,508 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 288 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:22,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2600 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:29:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-10-16 17:29:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 169. [2022-10-16 17:29:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 118 states have internal predecessors, (128), 34 states have call successors, (34), 10 states have call predecessors, (34), 15 states have return successors, (55), 40 states have call predecessors, (55), 34 states have call successors, (55) [2022-10-16 17:29:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 217 transitions. [2022-10-16 17:29:22,553 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 217 transitions. Word has length 76 [2022-10-16 17:29:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:22,553 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 217 transitions. [2022-10-16 17:29:22,554 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 17:29:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 217 transitions. [2022-10-16 17:29:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 17:29:22,555 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:22,556 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, 1, 1, 1] [2022-10-16 17:29:22,594 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 17:29:22,769 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 17:29:22,770 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 17:29:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1162977352, now seen corresponding path program 1 times [2022-10-16 17:29:22,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:22,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514531271] [2022-10-16 17:29:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:29:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:29:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:29:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 17:29:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:29:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 17:29:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:29:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:29:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,948 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 17:29:22,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:22,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514531271] [2022-10-16 17:29:22,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514531271] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:22,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:29:22,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-16 17:29:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255703847] [2022-10-16 17:29:22,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:22,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 17:29:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 17:29:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:29:22,951 INFO L87 Difference]: Start difference. First operand 169 states and 217 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 5 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 17:29:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:23,210 INFO L93 Difference]: Finished difference Result 194 states and 247 transitions. [2022-10-16 17:29:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:29:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 5 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 68 [2022-10-16 17:29:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:23,213 INFO L225 Difference]: With dead ends: 194 [2022-10-16 17:29:23,213 INFO L226 Difference]: Without dead ends: 192 [2022-10-16 17:29:23,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:29:23,214 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 50 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:23,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 328 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:29:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-10-16 17:29:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2022-10-16 17:29:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 120 states have internal predecessors, (131), 34 states have call successors, (34), 10 states have call predecessors, (34), 15 states have return successors, (55), 41 states have call predecessors, (55), 34 states have call successors, (55) [2022-10-16 17:29:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 220 transitions. [2022-10-16 17:29:23,230 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 220 transitions. Word has length 68 [2022-10-16 17:29:23,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:23,230 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 220 transitions. [2022-10-16 17:29:23,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 5 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 17:29:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 220 transitions. [2022-10-16 17:29:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 17:29:23,232 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:23,233 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:23,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:29:23,233 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 17:29:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:23,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2055080244, now seen corresponding path program 1 times [2022-10-16 17:29:23,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:23,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382861546] [2022-10-16 17:29:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:23,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:29:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 17:29:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 17:29:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382861546] [2022-10-16 17:29:23,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382861546] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692061067] [2022-10-16 17:29:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:23,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:23,676 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 17:29:23,695 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 17:29:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 17:29:23,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 17:29:23,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:29:24,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692061067] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:24,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:24,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 33 [2022-10-16 17:29:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924269809] [2022-10-16 17:29:24,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:24,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 17:29:24,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 17:29:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 17:29:24,353 INFO L87 Difference]: Start difference. First operand 172 states and 220 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, (24), 6 states have call predecessors, (24), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:29:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:26,150 INFO L93 Difference]: Finished difference Result 316 states and 417 transitions. [2022-10-16 17:29:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 17:29:26,151 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, (24), 6 states have call predecessors, (24), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) Word has length 78 [2022-10-16 17:29:26,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:26,154 INFO L225 Difference]: With dead ends: 316 [2022-10-16 17:29:26,155 INFO L226 Difference]: Without dead ends: 315 [2022-10-16 17:29:26,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=407, Invalid=3253, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:29:26,157 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 174 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:26,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1354 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:29:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-10-16 17:29:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 223. [2022-10-16 17:29:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 157 states have internal predecessors, (171), 44 states have call successors, (44), 12 states have call predecessors, (44), 20 states have return successors, (80), 53 states have call predecessors, (80), 44 states have call successors, (80) [2022-10-16 17:29:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 295 transitions. [2022-10-16 17:29:26,187 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 295 transitions. Word has length 78 [2022-10-16 17:29:26,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:26,187 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 295 transitions. [2022-10-16 17:29:26,188 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, (24), 6 states have call predecessors, (24), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:29:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 295 transitions. [2022-10-16 17:29:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-16 17:29:26,193 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:26,193 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 17:29:26,228 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 17:29:26,399 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 17:29:26,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash 224353966, now seen corresponding path program 1 times [2022-10-16 17:29:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:26,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085062945] [2022-10-16 17:29:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:26,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:29:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:29:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:29:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 48 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-10-16 17:29:27,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:27,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085062945] [2022-10-16 17:29:27,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085062945] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:27,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370747647] [2022-10-16 17:29:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:27,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:27,056 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 17:29:27,080 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 17:29:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:29:27,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 48 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-10-16 17:29:27,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-10-16 17:29:27,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370747647] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:27,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:27,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 14] total 23 [2022-10-16 17:29:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42611353] [2022-10-16 17:29:27,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:27,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:29:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:27,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:29:27,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:29:27,842 INFO L87 Difference]: Start difference. First operand 223 states and 295 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 17:29:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:28,714 INFO L93 Difference]: Finished difference Result 308 states and 420 transitions. [2022-10-16 17:29:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:29:28,714 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 17:29:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:28,718 INFO L225 Difference]: With dead ends: 308 [2022-10-16 17:29:28,718 INFO L226 Difference]: Without dead ends: 306 [2022-10-16 17:29:28,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 247 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=1954, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:29:28,720 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 174 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:28,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 436 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:29:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-10-16 17:29:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 243. [2022-10-16 17:29:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 165 states have (on average 1.1393939393939394) internal successors, (188), 172 states have internal predecessors, (188), 46 states have call successors, (46), 12 states have call predecessors, (46), 22 states have return successors, (108), 58 states have call predecessors, (108), 46 states have call successors, (108) [2022-10-16 17:29:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 342 transitions. [2022-10-16 17:29:28,745 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 342 transitions. Word has length 112 [2022-10-16 17:29:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 342 transitions. [2022-10-16 17:29:28,746 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 17:29:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 342 transitions. [2022-10-16 17:29:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-16 17:29:28,748 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:28,748 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 6, 5, 5, 5, 5, 5, 4, 4, 4, 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 17:29:28,783 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 17:29:28,961 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 17:29:28,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -140914479, now seen corresponding path program 2 times [2022-10-16 17:29:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:28,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549928053] [2022-10-16 17:29:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:28,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:29:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:29:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 28 proven. 55 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-10-16 17:29:29,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:29,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549928053] [2022-10-16 17:29:29,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549928053] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:29,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319612253] [2022-10-16 17:29:29,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:29,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:29,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:29,548 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 17:29:29,561 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 17:29:29,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:29,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:29:29,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 51 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-10-16 17:29:29,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 51 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-10-16 17:29:30,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319612253] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:30,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:30,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18 [2022-10-16 17:29:30,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749277959] [2022-10-16 17:29:30,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:30,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:29:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:30,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:29:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:29:30,006 INFO L87 Difference]: Start difference. First operand 243 states and 342 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 17:29:30,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:30,636 INFO L93 Difference]: Finished difference Result 275 states and 383 transitions. [2022-10-16 17:29:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:29:30,636 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 110 [2022-10-16 17:29:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:30,639 INFO L225 Difference]: With dead ends: 275 [2022-10-16 17:29:30,639 INFO L226 Difference]: Without dead ends: 274 [2022-10-16 17:29:30,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:29:30,641 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 90 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:30,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 557 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:29:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-16 17:29:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 234. [2022-10-16 17:29:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 157 states have (on average 1.1210191082802548) internal successors, (176), 166 states have internal predecessors, (176), 46 states have call successors, (46), 12 states have call predecessors, (46), 22 states have return successors, (108), 55 states have call predecessors, (108), 46 states have call successors, (108) [2022-10-16 17:29:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 330 transitions. [2022-10-16 17:29:30,663 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 330 transitions. Word has length 110 [2022-10-16 17:29:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:30,664 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 330 transitions. [2022-10-16 17:29:30,664 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 17:29:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 330 transitions. [2022-10-16 17:29:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-10-16 17:29:30,667 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:30,667 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 9, 8, 8, 8, 8, 8, 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 17:29:30,704 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 17:29:30,882 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 17:29:30,883 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1030482887, now seen corresponding path program 2 times [2022-10-16 17:29:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:30,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300779020] [2022-10-16 17:29:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 17:29:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 17:29:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 192 proven. 93 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2022-10-16 17:29:31,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:31,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300779020] [2022-10-16 17:29:31,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300779020] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:31,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422092988] [2022-10-16 17:29:31,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:31,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:31,742 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 17:29:31,749 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 17:29:31,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:31,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:31,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 17:29:31,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 192 proven. 93 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2022-10-16 17:29:32,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 235 proven. 73 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-10-16 17:29:32,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422092988] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:32,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:32,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 27 [2022-10-16 17:29:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531836368] [2022-10-16 17:29:32,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:29:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:29:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:29:32,874 INFO L87 Difference]: Start difference. First operand 234 states and 330 transitions. Second operand has 28 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 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 17:29:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:33,796 INFO L93 Difference]: Finished difference Result 341 states and 516 transitions. [2022-10-16 17:29:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:29:33,797 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 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 159 [2022-10-16 17:29:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:33,801 INFO L225 Difference]: With dead ends: 341 [2022-10-16 17:29:33,801 INFO L226 Difference]: Without dead ends: 339 [2022-10-16 17:29:33,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 346 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=532, Invalid=2120, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:29:33,804 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 203 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:33,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 498 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:29:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-10-16 17:29:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 232. [2022-10-16 17:29:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 156 states have (on average 1.1217948717948718) internal successors, (175), 165 states have internal predecessors, (175), 45 states have call successors, (45), 12 states have call predecessors, (45), 22 states have return successors, (101), 54 states have call predecessors, (101), 45 states have call successors, (101) [2022-10-16 17:29:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2022-10-16 17:29:33,834 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 159 [2022-10-16 17:29:33,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:33,835 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2022-10-16 17:29:33,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 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 17:29:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2022-10-16 17:29:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 17:29:33,838 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:33,838 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, 1, 1, 1] [2022-10-16 17:29:33,872 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 17:29:34,052 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 17:29:34,053 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 32344601, now seen corresponding path program 1 times [2022-10-16 17:29:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:34,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677744199] [2022-10-16 17:29:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:29:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:29:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:29:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 17:29:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:29:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 17:29:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:29:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:29:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 17:29:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,244 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 17:29:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677744199] [2022-10-16 17:29:34,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677744199] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:34,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:29:34,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 17:29:34,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342724932] [2022-10-16 17:29:34,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:34,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:29:34,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:29:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:29:34,247 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 17:29:34,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:34,513 INFO L93 Difference]: Finished difference Result 258 states and 353 transitions. [2022-10-16 17:29:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:29:34,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2022-10-16 17:29:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:34,516 INFO L225 Difference]: With dead ends: 258 [2022-10-16 17:29:34,516 INFO L226 Difference]: Without dead ends: 202 [2022-10-16 17:29:34,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:29:34,517 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 106 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:34,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 341 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:29:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-10-16 17:29:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2022-10-16 17:29:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 132 states have (on average 1.143939393939394) internal successors, (151), 142 states have internal predecessors, (151), 35 states have call successors, (35), 9 states have call predecessors, (35), 19 states have return successors, (90), 43 states have call predecessors, (90), 35 states have call successors, (90) [2022-10-16 17:29:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 276 transitions. [2022-10-16 17:29:34,534 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 276 transitions. Word has length 77 [2022-10-16 17:29:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:34,534 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 276 transitions. [2022-10-16 17:29:34,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 17:29:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 276 transitions. [2022-10-16 17:29:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-10-16 17:29:34,538 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:34,539 INFO L195 NwaCegarLoop]: trace histogram [26, 22, 13, 13, 13, 12, 12, 12, 10, 10, 9, 9, 9, 9, 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 17:29:34,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-16 17:29:34,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash -941288267, now seen corresponding path program 2 times [2022-10-16 17:29:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:34,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113830611] [2022-10-16 17:29:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:29:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 17:29:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,268 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 108 [2022-10-16 17:29:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:29:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 442 proven. 166 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-10-16 17:29:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:35,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113830611] [2022-10-16 17:29:35,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113830611] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:35,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703651221] [2022-10-16 17:29:35,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:35,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:35,747 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 17:29:35,765 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 17:29:35,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:35,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:35,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:29:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 442 proven. 166 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-10-16 17:29:36,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 490 proven. 140 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2022-10-16 17:29:37,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703651221] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:37,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:37,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 16] total 29 [2022-10-16 17:29:37,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095908863] [2022-10-16 17:29:37,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:37,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-16 17:29:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-16 17:29:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-10-16 17:29:37,450 INFO L87 Difference]: Start difference. First operand 195 states and 276 transitions. Second operand has 30 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 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 17:29:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:38,614 INFO L93 Difference]: Finished difference Result 371 states and 563 transitions. [2022-10-16 17:29:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 17:29:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 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 217 [2022-10-16 17:29:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:38,619 INFO L225 Difference]: With dead ends: 371 [2022-10-16 17:29:38,619 INFO L226 Difference]: Without dead ends: 369 [2022-10-16 17:29:38,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 481 SyntacticMatches, 18 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=692, Invalid=2730, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 17:29:38,623 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 237 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:38,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 748 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-10-16 17:29:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 245. [2022-10-16 17:29:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 172 states have (on average 1.1104651162790697) internal successors, (191), 182 states have internal predecessors, (191), 39 states have call successors, (39), 9 states have call predecessors, (39), 25 states have return successors, (190), 53 states have call predecessors, (190), 39 states have call successors, (190) [2022-10-16 17:29:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 420 transitions. [2022-10-16 17:29:38,653 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 420 transitions. Word has length 217 [2022-10-16 17:29:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 420 transitions. [2022-10-16 17:29:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 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 17:29:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 420 transitions. [2022-10-16 17:29:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-16 17:29:38,659 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:38,659 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 17:29:38,697 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 17:29:38,873 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,SelfDestructingSolverStorable14 [2022-10-16 17:29:38,874 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash -217670057, now seen corresponding path program 1 times [2022-10-16 17:29:38,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108214279] [2022-10-16 17:29:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:29:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 17:29:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:29:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,556 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 17:29:39,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:39,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108214279] [2022-10-16 17:29:39,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108214279] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:39,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341814508] [2022-10-16 17:29:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:39,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:39,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:39,559 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 17:29:39,585 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 17:29:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-16 17:29:39,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:39,992 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 17:29:39,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:40,854 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 17:29:40,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341814508] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:40,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:40,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 46 [2022-10-16 17:29:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382942207] [2022-10-16 17:29:40,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:40,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:29:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:29:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:29:40,858 INFO L87 Difference]: Start difference. First operand 245 states and 420 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 17:29:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:43,797 INFO L93 Difference]: Finished difference Result 432 states and 682 transitions. [2022-10-16 17:29:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 17:29:43,798 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 17:29:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:43,803 INFO L225 Difference]: With dead ends: 432 [2022-10-16 17:29:43,803 INFO L226 Difference]: Without dead ends: 431 [2022-10-16 17:29:43,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=821, Invalid=7735, Unknown=0, NotChecked=0, Total=8556 [2022-10-16 17:29:43,807 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 324 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:43,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1617 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:29:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-10-16 17:29:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 287. [2022-10-16 17:29:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 202 states have (on average 1.103960396039604) internal successors, (223), 212 states have internal predecessors, (223), 44 states have call successors, (44), 10 states have call predecessors, (44), 32 states have return successors, (215), 64 states have call predecessors, (215), 44 states have call successors, (215) [2022-10-16 17:29:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 482 transitions. [2022-10-16 17:29:43,841 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 482 transitions. Word has length 92 [2022-10-16 17:29:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:43,841 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 482 transitions. [2022-10-16 17:29:43,842 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 17:29:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 482 transitions. [2022-10-16 17:29:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-10-16 17:29:43,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:43,845 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 17:29:43,879 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 17:29:44,060 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 17:29:44,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -800264448, now seen corresponding path program 3 times [2022-10-16 17:29:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770178132] [2022-10-16 17:29:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:44,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 17:29:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 35 proven. 188 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-10-16 17:29:45,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:45,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770178132] [2022-10-16 17:29:45,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770178132] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:45,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494246142] [2022-10-16 17:29:45,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:45,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:45,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:45,040 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 17:29:45,047 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 17:29:45,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:29:45,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:45,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-16 17:29:45,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:45,354 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 17:29:45,359 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 17:29:45,419 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 17:29:45,424 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 17:29:45,707 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 17:29:45,711 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 17:29:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 293 proven. 25 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-10-16 17:29:45,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 43 proven. 114 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-10-16 17:29:46,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494246142] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:46,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:46,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 38 [2022-10-16 17:29:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128527357] [2022-10-16 17:29:46,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:46,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-16 17:29:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-16 17:29:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:29:46,559 INFO L87 Difference]: Start difference. First operand 287 states and 482 transitions. Second operand has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 31 states have internal predecessors, (109), 12 states have call successors, (28), 8 states have call predecessors, (28), 14 states have return successors, (31), 19 states have call predecessors, (31), 12 states have call successors, (31) [2022-10-16 17:29:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:49,547 INFO L93 Difference]: Finished difference Result 761 states and 1225 transitions. [2022-10-16 17:29:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-16 17:29:49,548 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 31 states have internal predecessors, (109), 12 states have call successors, (28), 8 states have call predecessors, (28), 14 states have return successors, (31), 19 states have call predecessors, (31), 12 states have call successors, (31) Word has length 150 [2022-10-16 17:29:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:49,553 INFO L225 Difference]: With dead ends: 761 [2022-10-16 17:29:49,554 INFO L226 Difference]: Without dead ends: 552 [2022-10-16 17:29:49,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=757, Invalid=4355, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:29:49,559 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 300 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:49,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1557 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1909 Invalid, 0 Unknown, 225 Unchecked, 1.3s Time] [2022-10-16 17:29:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-10-16 17:29:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 366. [2022-10-16 17:29:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 263 states have (on average 1.0950570342205324) internal successors, (288), 272 states have internal predecessors, (288), 52 states have call successors, (52), 14 states have call predecessors, (52), 42 states have return successors, (298), 79 states have call predecessors, (298), 52 states have call successors, (298) [2022-10-16 17:29:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 638 transitions. [2022-10-16 17:29:49,609 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 638 transitions. Word has length 150 [2022-10-16 17:29:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:49,609 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 638 transitions. [2022-10-16 17:29:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 31 states have internal predecessors, (109), 12 states have call successors, (28), 8 states have call predecessors, (28), 14 states have return successors, (31), 19 states have call predecessors, (31), 12 states have call successors, (31) [2022-10-16 17:29:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 638 transitions. [2022-10-16 17:29:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-10-16 17:29:49,615 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:49,616 INFO L195 NwaCegarLoop]: trace histogram [24, 21, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 9, 9, 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 17:29:49,654 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 17:29:49,818 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 17:29:49,819 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:49,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:49,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1011406966, now seen corresponding path program 4 times [2022-10-16 17:29:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:49,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518609693] [2022-10-16 17:29:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:29:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-16 17:29:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-16 17:29:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 348 proven. 237 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-10-16 17:29:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:51,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518609693] [2022-10-16 17:29:51,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518609693] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:51,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484375178] [2022-10-16 17:29:51,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:51,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:51,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:51,248 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 17:29:51,270 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 17:29:51,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:51,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:51,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 17:29:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 348 proven. 237 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-10-16 17:29:51,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 409 proven. 209 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-10-16 17:29:53,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484375178] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:53,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:53,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 31 [2022-10-16 17:29:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962920650] [2022-10-16 17:29:53,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:53,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:29:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:29:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:29:53,362 INFO L87 Difference]: Start difference. First operand 366 states and 638 transitions. Second operand has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 31 states have internal predecessors, (117), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (29), 22 states have call predecessors, (29), 7 states have call successors, (29) [2022-10-16 17:29:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:54,574 INFO L93 Difference]: Finished difference Result 598 states and 1034 transitions. [2022-10-16 17:29:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-16 17:29:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 31 states have internal predecessors, (117), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (29), 22 states have call predecessors, (29), 7 states have call successors, (29) Word has length 210 [2022-10-16 17:29:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:54,583 INFO L225 Difference]: With dead ends: 598 [2022-10-16 17:29:54,583 INFO L226 Difference]: Without dead ends: 596 [2022-10-16 17:29:54,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 459 SyntacticMatches, 21 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=839, Invalid=3321, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 17:29:54,587 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 312 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:54,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 501 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:29:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-10-16 17:29:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 302. [2022-10-16 17:29:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 220 states have internal predecessors, (236), 48 states have call successors, (48), 14 states have call predecessors, (48), 34 states have return successors, (154), 67 states have call predecessors, (154), 48 states have call successors, (154) [2022-10-16 17:29:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 438 transitions. [2022-10-16 17:29:54,639 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 438 transitions. Word has length 210 [2022-10-16 17:29:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:54,640 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 438 transitions. [2022-10-16 17:29:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 31 states have internal predecessors, (117), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (29), 22 states have call predecessors, (29), 7 states have call successors, (29) [2022-10-16 17:29:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 438 transitions. [2022-10-16 17:29:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-10-16 17:29:54,645 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:54,646 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 12, 12, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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 17:29:54,685 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 17:29:54,855 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 17:29:54,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1175478987, now seen corresponding path program 3 times [2022-10-16 17:29:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:54,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703492814] [2022-10-16 17:29:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 17:29:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-16 17:29:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 125 proven. 328 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2022-10-16 17:29:56,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:56,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703492814] [2022-10-16 17:29:56,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703492814] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:56,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211962394] [2022-10-16 17:29:56,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:56,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:56,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:56,492 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 17:29:56,522 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 17:29:56,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:29:56,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:56,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:29:56,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:57,002 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 19 treesize of output 7 [2022-10-16 17:29:57,005 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 19 treesize of output 7 [2022-10-16 17:29:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 99 proven. 8 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-10-16 17:29:57,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:05,443 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 17:30:11,529 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 17:30:11,545 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-10-16 17:30:11,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-10-16 17:30:11,553 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-10-16 17:30:11,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-10-16 17:30:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 32 proven. 168 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2022-10-16 17:30:11,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211962394] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:11,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:11,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 31 [2022-10-16 17:30:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146336365] [2022-10-16 17:30:11,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-16 17:30:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-16 17:30:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=828, Unknown=1, NotChecked=0, Total=930 [2022-10-16 17:30:11,585 INFO L87 Difference]: Start difference. First operand 302 states and 438 transitions. Second operand has 31 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 11 states have call successors, (27), 6 states have call predecessors, (27), 11 states have return successors, (27), 13 states have call predecessors, (27), 9 states have call successors, (27) [2022-10-16 17:30:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:13,953 INFO L93 Difference]: Finished difference Result 875 states and 1263 transitions. [2022-10-16 17:30:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:30:13,956 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 11 states have call successors, (27), 6 states have call predecessors, (27), 11 states have return successors, (27), 13 states have call predecessors, (27), 9 states have call successors, (27) Word has length 202 [2022-10-16 17:30:13,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:13,963 INFO L225 Difference]: With dead ends: 875 [2022-10-16 17:30:13,963 INFO L226 Difference]: Without dead ends: 709 [2022-10-16 17:30:13,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 471 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=653, Invalid=4748, Unknown=1, NotChecked=0, Total=5402 [2022-10-16 17:30:13,968 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 303 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 419 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:13,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1017 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1141 Invalid, 0 Unknown, 419 Unchecked, 0.9s Time] [2022-10-16 17:30:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-10-16 17:30:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 397. [2022-10-16 17:30:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 286 states have (on average 1.1048951048951048) internal successors, (316), 294 states have internal predecessors, (316), 55 states have call successors, (55), 18 states have call predecessors, (55), 47 states have return successors, (259), 84 states have call predecessors, (259), 55 states have call successors, (259) [2022-10-16 17:30:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 630 transitions. [2022-10-16 17:30:14,014 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 630 transitions. Word has length 202 [2022-10-16 17:30:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:14,014 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 630 transitions. [2022-10-16 17:30:14,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 11 states have call successors, (27), 6 states have call predecessors, (27), 11 states have return successors, (27), 13 states have call predecessors, (27), 9 states have call successors, (27) [2022-10-16 17:30:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 630 transitions. [2022-10-16 17:30:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 17:30:14,018 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:14,019 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 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] [2022-10-16 17:30:14,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-10-16 17:30:14,233 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 17:30:14,234 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1830940052, now seen corresponding path program 1 times [2022-10-16 17:30:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:14,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021574591] [2022-10-16 17:30:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:30:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:30:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 17:30:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-16 17:30:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 17:30:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 17:30:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:14,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021574591] [2022-10-16 17:30:14,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021574591] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:14,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213971143] [2022-10-16 17:30:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:14,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:14,934 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 17:30:14,961 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 17:30:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:15,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-16 17:30:15,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 48 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 17:30:15,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 5 proven. 57 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-16 17:30:16,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213971143] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:16,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:16,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 26] total 53 [2022-10-16 17:30:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80484882] [2022-10-16 17:30:16,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:16,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 17:30:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 17:30:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:30:16,148 INFO L87 Difference]: Start difference. First operand 397 states and 630 transitions. Second operand has 54 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 37 states have internal predecessors, (100), 12 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) [2022-10-16 17:30:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:19,902 INFO L93 Difference]: Finished difference Result 620 states and 918 transitions. [2022-10-16 17:30:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-10-16 17:30:19,903 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 37 states have internal predecessors, (100), 12 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) Word has length 100 [2022-10-16 17:30:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:19,909 INFO L225 Difference]: With dead ends: 620 [2022-10-16 17:30:19,909 INFO L226 Difference]: Without dead ends: 619 [2022-10-16 17:30:19,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1455, Invalid=10977, Unknown=0, NotChecked=0, Total=12432 [2022-10-16 17:30:19,913 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 494 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:19,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1518 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:30:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-10-16 17:30:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 480. [2022-10-16 17:30:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 344 states have (on average 1.1162790697674418) internal successors, (384), 355 states have internal predecessors, (384), 69 states have call successors, (69), 23 states have call predecessors, (69), 58 states have return successors, (288), 101 states have call predecessors, (288), 69 states have call successors, (288) [2022-10-16 17:30:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 741 transitions. [2022-10-16 17:30:19,963 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 741 transitions. Word has length 100 [2022-10-16 17:30:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:19,963 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 741 transitions. [2022-10-16 17:30:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 37 states have internal predecessors, (100), 12 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) [2022-10-16 17:30:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 741 transitions. [2022-10-16 17:30:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-10-16 17:30:19,970 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:19,970 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 10, 10, 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 17:30:20,010 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 17:30:20,184 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 17:30:20,184 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1150036853, now seen corresponding path program 4 times [2022-10-16 17:30:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:20,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883548423] [2022-10-16 17:30:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:30:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:30:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-16 17:30:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 231 proven. 423 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2022-10-16 17:30:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:22,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883548423] [2022-10-16 17:30:22,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883548423] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:22,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137051671] [2022-10-16 17:30:22,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:30:22,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:22,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:22,111 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 17:30:22,134 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 17:30:22,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:30:22,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:22,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 45 conjunts are in the unsatisfiable core [2022-10-16 17:30:22,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 231 proven. 423 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2022-10-16 17:30:22,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 308 proven. 370 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2022-10-16 17:30:25,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137051671] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:25,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:25,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 36 [2022-10-16 17:30:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73487366] [2022-10-16 17:30:25,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:25,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 17:30:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:25,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 17:30:25,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:30:25,543 INFO L87 Difference]: Start difference. First operand 480 states and 741 transitions. Second operand has 37 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 36 states have internal predecessors, (123), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (33), 26 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:30:27,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:27,166 INFO L93 Difference]: Finished difference Result 856 states and 1350 transitions. [2022-10-16 17:30:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:30:27,171 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 36 states have internal predecessors, (123), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (33), 26 states have call predecessors, (33), 8 states have call successors, (33) Word has length 224 [2022-10-16 17:30:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:27,180 INFO L225 Difference]: With dead ends: 856 [2022-10-16 17:30:27,180 INFO L226 Difference]: Without dead ends: 854 [2022-10-16 17:30:27,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 496 SyntacticMatches, 31 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3537 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1192, Invalid=4814, Unknown=0, NotChecked=0, Total=6006 [2022-10-16 17:30:27,184 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 340 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:27,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 686 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:30:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-10-16 17:30:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 512. [2022-10-16 17:30:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 370 states have (on average 1.1081081081081081) internal successors, (410), 381 states have internal predecessors, (410), 71 states have call successors, (71), 23 states have call predecessors, (71), 62 states have return successors, (374), 107 states have call predecessors, (374), 71 states have call successors, (374) [2022-10-16 17:30:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 855 transitions. [2022-10-16 17:30:27,249 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 855 transitions. Word has length 224 [2022-10-16 17:30:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:27,249 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 855 transitions. [2022-10-16 17:30:27,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 36 states have internal predecessors, (123), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (33), 26 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:30:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 855 transitions. [2022-10-16 17:30:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:30:27,254 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:27,254 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-10-16 17:30:27,290 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 17:30:27,468 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 17:30:27,469 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash -525235823, now seen corresponding path program 2 times [2022-10-16 17:30:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:27,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900495566] [2022-10-16 17:30:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:30:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 17:30:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-16 17:30:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:30:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-16 17:30:28,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:28,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900495566] [2022-10-16 17:30:28,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900495566] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:28,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320040053] [2022-10-16 17:30:28,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:28,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:28,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:28,167 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 17:30:28,172 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 17:30:28,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:28,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:28,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:30:28,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-16 17:30:28,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-10-16 17:30:29,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320040053] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:29,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:29,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 41 [2022-10-16 17:30:29,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523988560] [2022-10-16 17:30:29,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:29,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 17:30:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 17:30:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 17:30:29,593 INFO L87 Difference]: Start difference. First operand 512 states and 855 transitions. Second operand has 42 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (22), 6 states have call predecessors, (22), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) [2022-10-16 17:30:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:31,702 INFO L93 Difference]: Finished difference Result 873 states and 1473 transitions. [2022-10-16 17:30:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:30:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (22), 6 states have call predecessors, (22), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) Word has length 120 [2022-10-16 17:30:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:31,723 INFO L225 Difference]: With dead ends: 873 [2022-10-16 17:30:31,723 INFO L226 Difference]: Without dead ends: 872 [2022-10-16 17:30:31,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 248 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=529, Invalid=4583, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:30:31,727 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 199 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:31,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1288 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:30:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-10-16 17:30:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 685. [2022-10-16 17:30:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 503 states have (on average 1.095427435387674) internal successors, (551), 516 states have internal predecessors, (551), 90 states have call successors, (90), 27 states have call predecessors, (90), 83 states have return successors, (581), 141 states have call predecessors, (581), 90 states have call successors, (581) [2022-10-16 17:30:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1222 transitions. [2022-10-16 17:30:31,816 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1222 transitions. Word has length 120 [2022-10-16 17:30:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:31,817 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1222 transitions. [2022-10-16 17:30:31,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (22), 6 states have call predecessors, (22), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) [2022-10-16 17:30:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1222 transitions. [2022-10-16 17:30:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-10-16 17:30:31,827 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:31,827 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 12, 12, 5, 5, 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] [2022-10-16 17:30:31,869 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 17:30:32,042 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 17:30:32,043 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1014743732, now seen corresponding path program 5 times [2022-10-16 17:30:32,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168209036] [2022-10-16 17:30:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:32,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:30:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:30:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-16 17:30:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-10-16 17:30:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 610 proven. 382 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2022-10-16 17:30:33,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:33,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168209036] [2022-10-16 17:30:33,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168209036] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:33,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400364312] [2022-10-16 17:30:33,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:30:33,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:33,820 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 17:30:33,842 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 17:30:34,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-10-16 17:30:34,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:34,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:30:34,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 610 proven. 382 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2022-10-16 17:30:34,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 683 proven. 350 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2022-10-16 17:30:37,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400364312] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:37,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:37,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 20] total 35 [2022-10-16 17:30:37,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824856401] [2022-10-16 17:30:37,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:37,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-10-16 17:30:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-10-16 17:30:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=966, Unknown=0, NotChecked=0, Total=1260 [2022-10-16 17:30:37,615 INFO L87 Difference]: Start difference. First operand 685 states and 1222 transitions. Second operand has 36 states, 35 states have (on average 3.8) internal successors, (133), 35 states have internal predecessors, (133), 7 states have call successors, (18), 2 states have call predecessors, (18), 10 states have return successors, (32), 25 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 17:30:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:38,975 INFO L93 Difference]: Finished difference Result 1299 states and 2747 transitions. [2022-10-16 17:30:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 17:30:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.8) internal successors, (133), 35 states have internal predecessors, (133), 7 states have call successors, (18), 2 states have call predecessors, (18), 10 states have return successors, (32), 25 states have call predecessors, (32), 7 states have call successors, (32) Word has length 271 [2022-10-16 17:30:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:38,995 INFO L225 Difference]: With dead ends: 1299 [2022-10-16 17:30:38,995 INFO L226 Difference]: Without dead ends: 1297 [2022-10-16 17:30:38,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 595 SyntacticMatches, 27 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=973, Invalid=3997, Unknown=0, NotChecked=0, Total=4970 [2022-10-16 17:30:38,999 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 315 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:39,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 562 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:30:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-10-16 17:30:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 856. [2022-10-16 17:30:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 641 states have (on average 1.0748829953198127) internal successors, (689), 654 states have internal predecessors, (689), 102 states have call successors, (102), 27 states have call predecessors, (102), 104 states have return successors, (1490), 174 states have call predecessors, (1490), 102 states have call successors, (1490) [2022-10-16 17:30:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2281 transitions. [2022-10-16 17:30:39,218 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2281 transitions. Word has length 271 [2022-10-16 17:30:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:39,219 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 2281 transitions. [2022-10-16 17:30:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.8) internal successors, (133), 35 states have internal predecessors, (133), 7 states have call successors, (18), 2 states have call predecessors, (18), 10 states have return successors, (32), 25 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 17:30:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2281 transitions. [2022-10-16 17:30:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-16 17:30:39,232 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:39,232 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:39,273 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 17:30:39,446 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 17:30:39,446 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1676925529, now seen corresponding path program 2 times [2022-10-16 17:30:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:39,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85592137] [2022-10-16 17:30:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:30:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:30:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:30:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:30:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-16 17:30:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-16 17:30:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-16 17:30:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85592137] [2022-10-16 17:30:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85592137] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:40,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122582025] [2022-10-16 17:30:40,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:40,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:40,497 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 17:30:40,518 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 17:30:40,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:40,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:40,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:30:40,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-16 17:30:41,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-16 17:30:42,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122582025] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:42,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:42,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 33] total 66 [2022-10-16 17:30:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507744887] [2022-10-16 17:30:42,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:42,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-16 17:30:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-16 17:30:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=4139, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:30:42,609 INFO L87 Difference]: Start difference. First operand 856 states and 2281 transitions. Second operand has 67 states, 64 states have (on average 1.828125) internal successors, (117), 45 states have internal predecessors, (117), 17 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) [2022-10-16 17:30:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:49,454 INFO L93 Difference]: Finished difference Result 1322 states and 2975 transitions. [2022-10-16 17:30:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-10-16 17:30:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 64 states have (on average 1.828125) internal successors, (117), 45 states have internal predecessors, (117), 17 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) Word has length 114 [2022-10-16 17:30:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:49,475 INFO L225 Difference]: With dead ends: 1322 [2022-10-16 17:30:49,476 INFO L226 Difference]: Without dead ends: 1321 [2022-10-16 17:30:49,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9281 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3229, Invalid=27221, Unknown=0, NotChecked=0, Total=30450 [2022-10-16 17:30:49,483 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 467 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 4150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:49,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1787 Invalid, 4150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 3441 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-16 17:30:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-10-16 17:30:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 997. [2022-10-16 17:30:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 740 states have (on average 1.0756756756756756) internal successors, (796), 757 states have internal predecessors, (796), 126 states have call successors, (126), 31 states have call predecessors, (126), 122 states have return successors, (1554), 208 states have call predecessors, (1554), 126 states have call successors, (1554) [2022-10-16 17:30:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 2476 transitions. [2022-10-16 17:30:49,762 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 2476 transitions. Word has length 114 [2022-10-16 17:30:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 2476 transitions. [2022-10-16 17:30:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 64 states have (on average 1.828125) internal successors, (117), 45 states have internal predecessors, (117), 17 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) [2022-10-16 17:30:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 2476 transitions. [2022-10-16 17:30:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-16 17:30:49,776 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:49,776 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 3, 3, 3, 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, 1, 1, 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 17:30:49,815 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 17:30:49,989 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 17:30:49,989 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 33175790, now seen corresponding path program 3 times [2022-10-16 17:30:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:49,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382478634] [2022-10-16 17:30:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:30:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:30:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 17:30:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 17:30:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-10-16 17:30:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-10-16 17:30:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382478634] [2022-10-16 17:30:50,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382478634] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593992416] [2022-10-16 17:30:50,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:30:50,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:50,656 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 17:30:50,657 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 17:30:50,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 17:30:50,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:50,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 17:30:50,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:50,997 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 17:30:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-16 17:30:51,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-10-16 17:30:51,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593992416] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:51,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:51,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 13] total 39 [2022-10-16 17:30:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836038585] [2022-10-16 17:30:51,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-16 17:30:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-16 17:30:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-10-16 17:30:51,857 INFO L87 Difference]: Start difference. First operand 997 states and 2476 transitions. Second operand has 39 states, 36 states have (on average 3.388888888888889) internal successors, (122), 31 states have internal predecessors, (122), 13 states have call successors, (36), 7 states have call predecessors, (36), 14 states have return successors, (36), 18 states have call predecessors, (36), 13 states have call successors, (36) [2022-10-16 17:30:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:53,878 INFO L93 Difference]: Finished difference Result 2198 states and 5215 transitions. [2022-10-16 17:30:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-10-16 17:30:53,879 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 3.388888888888889) internal successors, (122), 31 states have internal predecessors, (122), 13 states have call successors, (36), 7 states have call predecessors, (36), 14 states have return successors, (36), 18 states have call predecessors, (36), 13 states have call successors, (36) Word has length 130 [2022-10-16 17:30:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:53,898 INFO L225 Difference]: With dead ends: 2198 [2022-10-16 17:30:53,899 INFO L226 Difference]: Without dead ends: 1316 [2022-10-16 17:30:53,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=371, Invalid=4321, Unknown=0, NotChecked=0, Total=4692 [2022-10-16 17:30:53,919 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 214 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:53,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1624 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1795 Invalid, 0 Unknown, 400 Unchecked, 1.0s Time] [2022-10-16 17:30:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-10-16 17:30:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1075. [2022-10-16 17:30:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 797 states have (on average 1.0840652446675032) internal successors, (864), 814 states have internal predecessors, (864), 134 states have call successors, (134), 35 states have call predecessors, (134), 135 states have return successors, (1602), 225 states have call predecessors, (1602), 134 states have call successors, (1602) [2022-10-16 17:30:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2600 transitions. [2022-10-16 17:30:54,143 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2600 transitions. Word has length 130 [2022-10-16 17:30:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:54,143 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 2600 transitions. [2022-10-16 17:30:54,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 3.388888888888889) internal successors, (122), 31 states have internal predecessors, (122), 13 states have call successors, (36), 7 states have call predecessors, (36), 14 states have return successors, (36), 18 states have call predecessors, (36), 13 states have call successors, (36) [2022-10-16 17:30:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2600 transitions. [2022-10-16 17:30:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-10-16 17:30:54,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:54,158 INFO L195 NwaCegarLoop]: trace histogram [22, 19, 11, 11, 11, 10, 10, 10, 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 17:30:54,198 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 17:30:54,371 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 17:30:54,372 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash -77815013, now seen corresponding path program 5 times [2022-10-16 17:30:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098187983] [2022-10-16 17:30:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:30:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:30:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-16 17:30:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 161 proven. 295 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-10-16 17:30:55,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:55,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098187983] [2022-10-16 17:30:55,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098187983] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:55,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169798273] [2022-10-16 17:30:55,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:30:55,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:55,515 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 17:30:55,521 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 17:30:55,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-10-16 17:30:55,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:55,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 17:30:55,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 151 proven. 305 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-10-16 17:30:56,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 255 proven. 243 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2022-10-16 17:30:58,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169798273] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:58,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:58,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 23] total 38 [2022-10-16 17:30:58,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395734941] [2022-10-16 17:30:58,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:58,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-16 17:30:58,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-16 17:30:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2022-10-16 17:30:58,222 INFO L87 Difference]: Start difference. First operand 1075 states and 2600 transitions. Second operand has 39 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 10 states have call successors, (21), 2 states have call predecessors, (21), 10 states have return successors, (35), 28 states have call predecessors, (35), 10 states have call successors, (35) [2022-10-16 17:31:00,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:00,225 INFO L93 Difference]: Finished difference Result 1952 states and 7072 transitions. [2022-10-16 17:31:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:31:00,226 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 10 states have call successors, (21), 2 states have call predecessors, (21), 10 states have return successors, (35), 28 states have call predecessors, (35), 10 states have call successors, (35) Word has length 192 [2022-10-16 17:31:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:00,275 INFO L225 Difference]: With dead ends: 1952 [2022-10-16 17:31:00,276 INFO L226 Difference]: Without dead ends: 1950 [2022-10-16 17:31:00,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 425 SyntacticMatches, 22 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3772 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1515, Invalid=5967, Unknown=0, NotChecked=0, Total=7482 [2022-10-16 17:31:00,285 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 373 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:00,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 624 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:31:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-10-16 17:31:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1367. [2022-10-16 17:31:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1023 states have (on average 1.0654936461388074) internal successors, (1090), 1040 states have internal predecessors, (1090), 168 states have call successors, (168), 35 states have call predecessors, (168), 167 states have return successors, (5182), 291 states have call predecessors, (5182), 168 states have call successors, (5182) [2022-10-16 17:31:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 6440 transitions. [2022-10-16 17:31:01,053 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 6440 transitions. Word has length 192 [2022-10-16 17:31:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:01,053 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 6440 transitions. [2022-10-16 17:31:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 10 states have call successors, (21), 2 states have call predecessors, (21), 10 states have return successors, (35), 28 states have call predecessors, (35), 10 states have call successors, (35) [2022-10-16 17:31:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 6440 transitions. [2022-10-16 17:31:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-16 17:31:01,075 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:01,075 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 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, 1, 1, 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 17:31:01,112 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 17:31:01,289 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 17:31:01,290 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 17:31:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1055301529, now seen corresponding path program 4 times [2022-10-16 17:31:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520936215] [2022-10-16 17:31:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:01,319 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 2 [2022-10-16 17:31:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:31:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:31:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:31:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 17:31:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:02,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-16 17:31:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-16 17:31:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-10-16 17:31:02,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:02,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520936215] [2022-10-16 17:31:02,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520936215] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:02,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308713495] [2022-10-16 17:31:02,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:31:02,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:02,091 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 17:31:02,092 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 17:31:02,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:31:02,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:02,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-16 17:31:02,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:02,412 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 6 treesize of output 5 [2022-10-16 17:31:02,418 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 6 treesize of output 5 [2022-10-16 17:31:04,547 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_min_#in~n.base_BEFORE_CALL_12| Int) (|v_min_#in~n.offset_BEFORE_CALL_12| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_min_#in~n.base_BEFORE_CALL_12|) (+ |v_min_#in~n.offset_BEFORE_CALL_12| 4)) 0))) (exists ((|v_min_#in~n.base_BEFORE_CALL_12| Int) (|v_min_#in~n.offset_BEFORE_CALL_12| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_min_#in~n.base_BEFORE_CALL_12|) (+ |v_min_#in~n.offset_BEFORE_CALL_12| 4)) 0)))) is different from true [2022-10-16 17:31:06,673 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_8| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_8| 4)) 0))) (exists ((|v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_8| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_8| 4)) 0)))) is different from true [2022-10-16 17:31:10,183 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_10|) (+ |v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_9| 4)) 0))) (exists ((|v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_10|) (+ |v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_9| 4)) 0)))) is different from true [2022-10-16 17:31:10,328 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 31 treesize of output 19 [2022-10-16 17:31:10,335 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 25 treesize of output 13 [2022-10-16 17:31:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 236 trivial. 6 not checked. [2022-10-16 17:31:10,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:10,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308713495] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:10,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:31:10,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 35 [2022-10-16 17:31:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43498932] [2022-10-16 17:31:10,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:31:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:10,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:31:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1105, Unknown=3, NotChecked=204, Total=1406 [2022-10-16 17:31:10,895 INFO L87 Difference]: Start difference. First operand 1367 states and 6440 transitions. Second operand has 35 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 28 states have internal predecessors, (93), 11 states have call successors, (26), 9 states have call predecessors, (26), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) [2022-10-16 17:31:56,124 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 17:32:08,249 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 17:32:18,319 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 17:32:32,417 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)