/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:28:13,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:28:13,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:28:13,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:28:13,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:28:13,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:28:13,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:28:13,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:28:13,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:28:13,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:28:13,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:28:13,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:28:13,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:28:13,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:28:13,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:28:13,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:28:13,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:28:13,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:28:13,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:28:13,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:28:13,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:28:13,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:28:13,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:28:13,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:28:13,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:28:13,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:28:13,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:28:13,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:28:13,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:28:13,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:28:13,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:28:13,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:28:13,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:28:13,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:28:13,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:28:13,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:28:13,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:28:13,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:28:13,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:28:13,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:28:13,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:28:13,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:28:13,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:28:13,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:28:13,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:28:13,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:28:13,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:28:13,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:28:13,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:28:13,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:28:13,797 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:28:13,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:28:13,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:28:13,799 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:28:13,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:28:13,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:28:13,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:28:13,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:28:13,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:28:13,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:28:13,800 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:28:13,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:28:13,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:28:13,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:28:13,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:28:13,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:28:13,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:28:13,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:28:13,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:13,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:28:13,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:28:13,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:28:13,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:28:13,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:28:13,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:28:13,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:28:14,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:28:14,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:28:14,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:28:14,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:28:14,210 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:28:14,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2022-10-16 17:28:14,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ee0b9a5/3b45796b950048408fd263c6fdd39a46/FLAG78ae9c9b8 [2022-10-16 17:28:15,001 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:28:15,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2022-10-16 17:28:15,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ee0b9a5/3b45796b950048408fd263c6fdd39a46/FLAG78ae9c9b8 [2022-10-16 17:28:15,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ee0b9a5/3b45796b950048408fd263c6fdd39a46 [2022-10-16 17:28:15,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:28:15,372 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:28:15,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:15,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:28:15,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:28:15,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c35e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15, skipping insertion in model container [2022-10-16 17:28:15,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:28:15,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:28:15,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c[619,632] [2022-10-16 17:28:15,682 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:15,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:15,730 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:28:15,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c[619,632] [2022-10-16 17:28:15,764 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:15,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:15,806 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:28:15,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15 WrapperNode [2022-10-16 17:28:15,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:15,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:15,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:28:15,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:28:15,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,859 INFO L138 Inliner]: procedures = 29, calls = 61, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-10-16 17:28:15,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:15,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:28:15,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:28:15,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:28:15,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,898 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:28:15,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:28:15,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:28:15,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:28:15,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (1/1) ... [2022-10-16 17:28:15,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:15,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 17:28:15,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 17:28:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:28:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 17:28:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 17:28:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:28:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure min [2022-10-16 17:28:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2022-10-16 17:28:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:28:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 17:28:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 17:28:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 17:28:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2022-10-16 17:28:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2022-10-16 17:28:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:28:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:28:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure size [2022-10-16 17:28:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2022-10-16 17:28:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:28:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:28:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-16 17:28:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-16 17:28:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2022-10-16 17:28:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2022-10-16 17:28:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:28:16,127 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:28:16,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:28:16,647 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:28:16,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:28:16,657 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 17:28:16,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:16 BoogieIcfgContainer [2022-10-16 17:28:16,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:28:16,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:28:16,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:28:16,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:28:16,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:28:15" (1/3) ... [2022-10-16 17:28:16,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71679f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:16, skipping insertion in model container [2022-10-16 17:28:16,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:15" (2/3) ... [2022-10-16 17:28:16,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71679f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:16, skipping insertion in model container [2022-10-16 17:28:16,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:16" (3/3) ... [2022-10-16 17:28:16,671 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2022-10-16 17:28:16,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:28:16,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:28:16,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:28:16,769 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;@13b2d2dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:28:16,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:28:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 64 states have (on average 1.375) internal successors, (88), 76 states have internal predecessors, (88), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-16 17:28:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:28:16,788 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:16,789 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:16,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1165995000, now seen corresponding path program 1 times [2022-10-16 17:28:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:16,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581950860] [2022-10-16 17:28:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:28:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:28:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:17,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581950860] [2022-10-16 17:28:17,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581950860] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:17,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900515164] [2022-10-16 17:28:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:17,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:17,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:17,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:28:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:17,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:17,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 17:28:17,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 17:28:17,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900515164] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:17,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:17,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2022-10-16 17:28:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431657759] [2022-10-16 17:28:17,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:17,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:28:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:28:17,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:28:18,002 INFO L87 Difference]: Start difference. First operand has 103 states, 64 states have (on average 1.375) internal successors, (88), 76 states have internal predecessors, (88), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:28:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:18,854 INFO L93 Difference]: Finished difference Result 258 states and 339 transitions. [2022-10-16 17:28:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:28:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 29 [2022-10-16 17:28:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:18,870 INFO L225 Difference]: With dead ends: 258 [2022-10-16 17:28:18,870 INFO L226 Difference]: Without dead ends: 168 [2022-10-16 17:28:18,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:28:18,880 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 146 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:18,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 642 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:28:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-10-16 17:28:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 131. [2022-10-16 17:28:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 94 states have internal predecessors, (103), 28 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (36), 29 states have call predecessors, (36), 28 states have call successors, (36) [2022-10-16 17:28:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2022-10-16 17:28:18,953 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 29 [2022-10-16 17:28:18,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:18,953 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2022-10-16 17:28:18,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:28:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2022-10-16 17:28:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:28:18,957 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:18,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:18,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 17:28:19,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash 670024807, now seen corresponding path program 1 times [2022-10-16 17:28:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:19,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014960365] [2022-10-16 17:28:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:28:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:19,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014960365] [2022-10-16 17:28:19,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014960365] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:19,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332293877] [2022-10-16 17:28:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:19,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:19,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:28:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:28:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:28:19,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:28:20,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332293877] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:20,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:20,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-10-16 17:28:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481521671] [2022-10-16 17:28:20,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:20,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:20,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:20,137 INFO L87 Difference]: Start difference. First operand 131 states and 167 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 17 states have internal predecessors, (58), 7 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:28:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:22,231 INFO L93 Difference]: Finished difference Result 300 states and 377 transitions. [2022-10-16 17:28:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:28:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 17 states have internal predecessors, (58), 7 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) Word has length 39 [2022-10-16 17:28:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:22,237 INFO L225 Difference]: With dead ends: 300 [2022-10-16 17:28:22,237 INFO L226 Difference]: Without dead ends: 243 [2022-10-16 17:28:22,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=409, Invalid=2897, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:28:22,242 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 231 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:22,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1090 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:28:22,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-10-16 17:28:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 171. [2022-10-16 17:28:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 123 states have internal predecessors, (138), 35 states have call successors, (35), 10 states have call predecessors, (35), 14 states have return successors, (47), 37 states have call predecessors, (47), 35 states have call successors, (47) [2022-10-16 17:28:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2022-10-16 17:28:22,278 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 39 [2022-10-16 17:28:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:22,278 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2022-10-16 17:28:22,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 17 states have internal predecessors, (58), 7 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:28:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2022-10-16 17:28:22,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 17:28:22,281 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:22,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:22,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:22,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-16 17:28:22,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1126825100, now seen corresponding path program 1 times [2022-10-16 17:28:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:22,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139203401] [2022-10-16 17:28:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:28:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139203401] [2022-10-16 17:28:22,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139203401] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746937585] [2022-10-16 17:28:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:22,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:22,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:22,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:22,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:28:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:22,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:28:22,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:28:23,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746937585] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:23,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:23,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2022-10-16 17:28:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905711130] [2022-10-16 17:28:23,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:28:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:28:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:23,035 INFO L87 Difference]: Start difference. First operand 171 states and 220 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:28:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:23,776 INFO L93 Difference]: Finished difference Result 327 states and 426 transitions. [2022-10-16 17:28:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:28:23,777 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 40 [2022-10-16 17:28:23,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:23,780 INFO L225 Difference]: With dead ends: 327 [2022-10-16 17:28:23,780 INFO L226 Difference]: Without dead ends: 208 [2022-10-16 17:28:23,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:28:23,785 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 128 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:23,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1186 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:28:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-10-16 17:28:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 173. [2022-10-16 17:28:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 125 states have internal predecessors, (139), 35 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (50), 37 states have call predecessors, (50), 35 states have call successors, (50) [2022-10-16 17:28:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 224 transitions. [2022-10-16 17:28:23,814 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 224 transitions. Word has length 40 [2022-10-16 17:28:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:23,815 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 224 transitions. [2022-10-16 17:28:23,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:28:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 224 transitions. [2022-10-16 17:28:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 17:28:23,818 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:23,819 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:23,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:24,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:24,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:24,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 977908722, now seen corresponding path program 1 times [2022-10-16 17:28:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:24,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420438377] [2022-10-16 17:28:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-16 17:28:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:24,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420438377] [2022-10-16 17:28:24,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420438377] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:24,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:24,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920653954] [2022-10-16 17:28:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:24,237 INFO L87 Difference]: Start difference. First operand 173 states and 224 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:24,495 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-10-16 17:28:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-10-16 17:28:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:24,499 INFO L225 Difference]: With dead ends: 190 [2022-10-16 17:28:24,499 INFO L226 Difference]: Without dead ends: 189 [2022-10-16 17:28:24,500 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 17:28:24,501 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 50 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:24,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 253 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-16 17:28:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2022-10-16 17:28:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 116 states have (on average 1.2327586206896552) internal successors, (143), 128 states have internal predecessors, (143), 35 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (50), 38 states have call predecessors, (50), 35 states have call successors, (50) [2022-10-16 17:28:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2022-10-16 17:28:24,527 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 57 [2022-10-16 17:28:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:24,527 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2022-10-16 17:28:24,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2022-10-16 17:28:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 17:28:24,531 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:24,531 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:24,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:28:24,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting tree_inorderErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1274314751, now seen corresponding path program 1 times [2022-10-16 17:28:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:24,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538406945] [2022-10-16 17:28:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:28:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 17:28:25,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:25,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538406945] [2022-10-16 17:28:25,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538406945] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:25,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542664749] [2022-10-16 17:28:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:25,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:25,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:25,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:28:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:25,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:28:25,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:28:25,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542664749] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:25,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:28:25,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [15] total 16 [2022-10-16 17:28:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523502238] [2022-10-16 17:28:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:25,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:28:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:28:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:25,251 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:28:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:25,269 INFO L93 Difference]: Finished difference Result 177 states and 228 transitions. [2022-10-16 17:28:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:28:25,269 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 60 [2022-10-16 17:28:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:25,275 INFO L225 Difference]: With dead ends: 177 [2022-10-16 17:28:25,275 INFO L226 Difference]: Without dead ends: 176 [2022-10-16 17:28:25,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:25,280 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:25,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 227 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:28:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-10-16 17:28:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-10-16 17:28:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 127 states have internal predecessors, (139), 35 states have call successors, (35), 10 states have call predecessors, (35), 15 states have return successors, (50), 38 states have call predecessors, (50), 35 states have call successors, (50) [2022-10-16 17:28:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 224 transitions. [2022-10-16 17:28:25,324 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 224 transitions. Word has length 60 [2022-10-16 17:28:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:25,329 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 224 transitions. [2022-10-16 17:28:25,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:28:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 224 transitions. [2022-10-16 17:28:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-16 17:28:25,340 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:25,340 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 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] [2022-10-16 17:28:25,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:25,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:25,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 133716566, now seen corresponding path program 1 times [2022-10-16 17:28:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:25,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603713218] [2022-10-16 17:28:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:25,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 17:28:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-16 17:28:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:25,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603713218] [2022-10-16 17:28:25,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603713218] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:25,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254745423] [2022-10-16 17:28:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:25,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:25,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:25,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:28:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:28:25,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-16 17:28:26,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-16 17:28:26,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254745423] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:26,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:26,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 15 [2022-10-16 17:28:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319904899] [2022-10-16 17:28:26,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:28:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:28:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:26,268 INFO L87 Difference]: Start difference. First operand 176 states and 224 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-16 17:28:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:26,821 INFO L93 Difference]: Finished difference Result 216 states and 284 transitions. [2022-10-16 17:28:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:28:26,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) Word has length 79 [2022-10-16 17:28:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:26,827 INFO L225 Difference]: With dead ends: 216 [2022-10-16 17:28:26,827 INFO L226 Difference]: Without dead ends: 214 [2022-10-16 17:28:26,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 173 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:26,829 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 75 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:26,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 439 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:28:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-10-16 17:28:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2022-10-16 17:28:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 142 states have internal predecessors, (156), 36 states have call successors, (36), 10 states have call predecessors, (36), 17 states have return successors, (64), 42 states have call predecessors, (64), 36 states have call successors, (64) [2022-10-16 17:28:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2022-10-16 17:28:26,863 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 79 [2022-10-16 17:28:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:26,866 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2022-10-16 17:28:26,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-16 17:28:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2022-10-16 17:28:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-16 17:28:26,869 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:26,870 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 4, 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] [2022-10-16 17:28:26,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:27,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:27,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:27,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash -201654479, now seen corresponding path program 1 times [2022-10-16 17:28:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:27,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394917318] [2022-10-16 17:28:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:28:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:28:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-16 17:28:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:27,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394917318] [2022-10-16 17:28:27,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394917318] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:27,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:27,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:27,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919544400] [2022-10-16 17:28:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:27,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:27,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:27,267 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 17:28:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:27,551 INFO L93 Difference]: Finished difference Result 214 states and 281 transitions. [2022-10-16 17:28:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:27,552 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 81 [2022-10-16 17:28:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:27,555 INFO L225 Difference]: With dead ends: 214 [2022-10-16 17:28:27,555 INFO L226 Difference]: Without dead ends: 213 [2022-10-16 17:28:27,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:27,557 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 52 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:27,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 312 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-10-16 17:28:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 197. [2022-10-16 17:28:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 143 states have internal predecessors, (159), 36 states have call successors, (36), 10 states have call predecessors, (36), 17 states have return successors, (64), 43 states have call predecessors, (64), 36 states have call successors, (64) [2022-10-16 17:28:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 259 transitions. [2022-10-16 17:28:27,587 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 259 transitions. Word has length 81 [2022-10-16 17:28:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:27,588 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 259 transitions. [2022-10-16 17:28:27,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 17:28:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 259 transitions. [2022-10-16 17:28:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 17:28:27,591 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:27,591 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:28:27,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 338020150, now seen corresponding path program 1 times [2022-10-16 17:28:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:27,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339172142] [2022-10-16 17:28:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:27,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:28:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 17:28:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:28,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339172142] [2022-10-16 17:28:28,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339172142] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:28,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642997812] [2022-10-16 17:28:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:28,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:28,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:28,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:28:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:28:28,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 17:28:28,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:28:29,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642997812] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:29,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:29,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2022-10-16 17:28:29,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934076419] [2022-10-16 17:28:29,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:29,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:28:29,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:28:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:28:29,506 INFO L87 Difference]: Start difference. First operand 197 states and 259 transitions. Second operand has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) [2022-10-16 17:28:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:31,559 INFO L93 Difference]: Finished difference Result 357 states and 467 transitions. [2022-10-16 17:28:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:28:31,561 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) Word has length 76 [2022-10-16 17:28:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:31,563 INFO L225 Difference]: With dead ends: 357 [2022-10-16 17:28:31,564 INFO L226 Difference]: Without dead ends: 195 [2022-10-16 17:28:31,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=334, Invalid=3956, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 17:28:31,567 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 364 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:31,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 2357 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:28:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-10-16 17:28:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 161. [2022-10-16 17:28:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 117 states have internal predecessors, (130), 29 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (50), 35 states have call predecessors, (50), 29 states have call successors, (50) [2022-10-16 17:28:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2022-10-16 17:28:31,585 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 76 [2022-10-16 17:28:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:31,586 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2022-10-16 17:28:31,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) [2022-10-16 17:28:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2022-10-16 17:28:31,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 17:28:31,587 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:31,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:31,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 17:28:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:31,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1201138505, now seen corresponding path program 1 times [2022-10-16 17:28:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:31,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266818684] [2022-10-16 17:28:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-16 17:28:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:31,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:31,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266818684] [2022-10-16 17:28:31,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266818684] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:31,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:31,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 17:28:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380519328] [2022-10-16 17:28:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:31,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:28:31,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:28:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:28:31,954 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 17:28:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:32,228 INFO L93 Difference]: Finished difference Result 190 states and 246 transitions. [2022-10-16 17:28:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2022-10-16 17:28:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:32,231 INFO L225 Difference]: With dead ends: 190 [2022-10-16 17:28:32,231 INFO L226 Difference]: Without dead ends: 188 [2022-10-16 17:28:32,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:32,232 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 48 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:32,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 334 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-16 17:28:32,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2022-10-16 17:28:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 121 states have internal predecessors, (135), 31 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (52), 38 states have call predecessors, (52), 31 states have call successors, (52) [2022-10-16 17:28:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 218 transitions. [2022-10-16 17:28:32,249 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 218 transitions. Word has length 65 [2022-10-16 17:28:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:32,249 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 218 transitions. [2022-10-16 17:28:32,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 17:28:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 218 transitions. [2022-10-16 17:28:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 17:28:32,251 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:32,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:32,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:28:32,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:32,252 INFO L85 PathProgramCache]: Analyzing trace with hash 216924694, now seen corresponding path program 1 times [2022-10-16 17:28:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:32,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477799965] [2022-10-16 17:28:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:32,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:28:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:28:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:32,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477799965] [2022-10-16 17:28:32,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477799965] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:32,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939385740] [2022-10-16 17:28:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:32,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:32,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:32,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:32,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:28:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:32,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:28:32,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:32,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 17:28:33,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939385740] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:33,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:33,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 33 [2022-10-16 17:28:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537856669] [2022-10-16 17:28:33,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:33,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 17:28:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 17:28:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 17:28:33,311 INFO L87 Difference]: Start difference. First operand 168 states and 218 transitions. Second operand has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:28:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:35,242 INFO L93 Difference]: Finished difference Result 318 states and 424 transitions. [2022-10-16 17:28:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 17:28:35,243 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) Word has length 75 [2022-10-16 17:28:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:35,246 INFO L225 Difference]: With dead ends: 318 [2022-10-16 17:28:35,246 INFO L226 Difference]: Without dead ends: 317 [2022-10-16 17:28:35,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=407, Invalid=3253, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:28:35,250 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 272 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:35,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1320 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:28:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-10-16 17:28:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 219. [2022-10-16 17:28:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.1666666666666667) internal successors, (175), 158 states have internal predecessors, (175), 41 states have call successors, (41), 10 states have call predecessors, (41), 18 states have return successors, (77), 50 states have call predecessors, (77), 41 states have call successors, (77) [2022-10-16 17:28:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 293 transitions. [2022-10-16 17:28:35,286 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 293 transitions. Word has length 75 [2022-10-16 17:28:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:35,287 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 293 transitions. [2022-10-16 17:28:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:28:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 293 transitions. [2022-10-16 17:28:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 17:28:35,289 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:35,290 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:35,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:35,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:35,506 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:35,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash 724222493, now seen corresponding path program 1 times [2022-10-16 17:28:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:35,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915055206] [2022-10-16 17:28:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 17:28:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915055206] [2022-10-16 17:28:35,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915055206] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646049619] [2022-10-16 17:28:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:35,790 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:35,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:28:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:28:35,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 17:28:36,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 17:28:36,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646049619] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:36,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:36,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 31 [2022-10-16 17:28:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503400039] [2022-10-16 17:28:36,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:36,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:28:36,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:28:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:28:36,303 INFO L87 Difference]: Start difference. First operand 219 states and 293 transitions. Second operand has 32 states, 31 states have (on average 2.129032258064516) internal successors, (66), 20 states have internal predecessors, (66), 7 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (16), 10 states have call predecessors, (16), 7 states have call successors, (16) [2022-10-16 17:28:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:37,712 INFO L93 Difference]: Finished difference Result 275 states and 366 transitions. [2022-10-16 17:28:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-16 17:28:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.129032258064516) internal successors, (66), 20 states have internal predecessors, (66), 7 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (16), 10 states have call predecessors, (16), 7 states have call successors, (16) Word has length 68 [2022-10-16 17:28:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:37,716 INFO L225 Difference]: With dead ends: 275 [2022-10-16 17:28:37,716 INFO L226 Difference]: Without dead ends: 274 [2022-10-16 17:28:37,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 17:28:37,719 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 188 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:37,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1303 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:28:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-16 17:28:37,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 249. [2022-10-16 17:28:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 171 states have (on average 1.1695906432748537) internal successors, (200), 180 states have internal predecessors, (200), 46 states have call successors, (46), 12 states have call predecessors, (46), 22 states have return successors, (86), 56 states have call predecessors, (86), 46 states have call successors, (86) [2022-10-16 17:28:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 332 transitions. [2022-10-16 17:28:37,744 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 332 transitions. Word has length 68 [2022-10-16 17:28:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:37,744 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 332 transitions. [2022-10-16 17:28:37,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.129032258064516) internal successors, (66), 20 states have internal predecessors, (66), 7 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (16), 10 states have call predecessors, (16), 7 states have call successors, (16) [2022-10-16 17:28:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 332 transitions. [2022-10-16 17:28:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-16 17:28:37,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:37,747 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:37,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-16 17:28:37,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 17:28:37,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash -976826576, now seen corresponding path program 1 times [2022-10-16 17:28:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042280950] [2022-10-16 17:28:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:37,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:28:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:28:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:28:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,698 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 17:28:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:38,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042280950] [2022-10-16 17:28:38,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042280950] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:38,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357293851] [2022-10-16 17:28:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:38,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:38,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:38,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:38,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:28:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:28:38,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:39,018 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 17:28:39,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:39,556 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 17:28:39,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357293851] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:39,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:39,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 14] total 23 [2022-10-16 17:28:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185198456] [2022-10-16 17:28:39,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:28:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:28:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:28:39,560 INFO L87 Difference]: Start difference. First operand 249 states and 332 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 16 states have call predecessors, (22), 6 states have call successors, (22) [2022-10-16 17:28:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:40,566 INFO L93 Difference]: Finished difference Result 335 states and 460 transitions. [2022-10-16 17:28:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:28:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 16 states have call predecessors, (22), 6 states have call successors, (22) Word has length 112 [2022-10-16 17:28:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:40,571 INFO L225 Difference]: With dead ends: 335 [2022-10-16 17:28:40,572 INFO L226 Difference]: Without dead ends: 333 [2022-10-16 17:28:40,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 247 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=1954, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:28:40,574 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 179 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:40,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 637 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-10-16 17:28:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 269. [2022-10-16 17:28:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 187 states have (on average 1.160427807486631) internal successors, (217), 195 states have internal predecessors, (217), 48 states have call successors, (48), 12 states have call predecessors, (48), 24 states have return successors, (114), 61 states have call predecessors, (114), 48 states have call successors, (114) [2022-10-16 17:28:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 379 transitions. [2022-10-16 17:28:40,601 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 379 transitions. Word has length 112 [2022-10-16 17:28:40,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:40,601 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 379 transitions. [2022-10-16 17:28:40,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 16 states have call predecessors, (22), 6 states have call successors, (22) [2022-10-16 17:28:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 379 transitions. [2022-10-16 17:28:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-16 17:28:40,604 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:40,604 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 17:28:40,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:40,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:40,818 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:40,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1900752173, now seen corresponding path program 2 times [2022-10-16 17:28:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:40,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943587409] [2022-10-16 17:28:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:28:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:28:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-10-16 17:28:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:41,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943587409] [2022-10-16 17:28:41,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943587409] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:41,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913526672] [2022-10-16 17:28:41,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:41,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:41,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:41,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:41,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:28:41,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:41,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:41,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:28:41,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:41,585 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 17:28:41,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:41,804 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 17:28:41,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913526672] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:41,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:41,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18 [2022-10-16 17:28:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244745468] [2022-10-16 17:28:41,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:41,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:28:41,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:41,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:28:41,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:28:41,807 INFO L87 Difference]: Start difference. First operand 269 states and 379 transitions. Second operand has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2022-10-16 17:28:42,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:42,524 INFO L93 Difference]: Finished difference Result 312 states and 456 transitions. [2022-10-16 17:28:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:28:42,525 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 17:28:42,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:42,528 INFO L225 Difference]: With dead ends: 312 [2022-10-16 17:28:42,528 INFO L226 Difference]: Without dead ends: 311 [2022-10-16 17:28:42,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-10-16 17:28:42,530 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 156 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:42,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 578 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:28:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-10-16 17:28:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 260. [2022-10-16 17:28:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.1452513966480447) internal successors, (205), 189 states have internal predecessors, (205), 48 states have call successors, (48), 12 states have call predecessors, (48), 24 states have return successors, (114), 58 states have call predecessors, (114), 48 states have call successors, (114) [2022-10-16 17:28:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 367 transitions. [2022-10-16 17:28:42,556 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 367 transitions. Word has length 110 [2022-10-16 17:28:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:42,557 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 367 transitions. [2022-10-16 17:28:42,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2022-10-16 17:28:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 367 transitions. [2022-10-16 17:28:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-16 17:28:42,560 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:42,560 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:42,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:42,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:28:42,776 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:42,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2008655864, now seen corresponding path program 2 times [2022-10-16 17:28:42,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:42,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858122288] [2022-10-16 17:28:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 14 proven. 93 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-16 17:28:43,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:43,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858122288] [2022-10-16 17:28:43,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858122288] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:43,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39356788] [2022-10-16 17:28:43,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:43,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:43,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:43,538 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:43,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:28:43,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:43,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:43,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 17:28:43,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 14 proven. 93 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-16 17:28:43,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 57 proven. 73 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-10-16 17:28:44,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39356788] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:44,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:44,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 27 [2022-10-16 17:28:44,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408091501] [2022-10-16 17:28:44,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:44,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:44,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:44,741 INFO L87 Difference]: Start difference. First operand 260 states and 367 transitions. Second operand has 28 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:28:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:45,677 INFO L93 Difference]: Finished difference Result 368 states and 556 transitions. [2022-10-16 17:28:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:28:45,678 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) Word has length 118 [2022-10-16 17:28:45,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:45,682 INFO L225 Difference]: With dead ends: 368 [2022-10-16 17:28:45,682 INFO L226 Difference]: Without dead ends: 366 [2022-10-16 17:28:45,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 250 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=532, Invalid=2120, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:28:45,684 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 177 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:45,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 573 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-10-16 17:28:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 258. [2022-10-16 17:28:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 178 states have (on average 1.146067415730337) internal successors, (204), 188 states have internal predecessors, (204), 47 states have call successors, (47), 12 states have call predecessors, (47), 24 states have return successors, (107), 57 states have call predecessors, (107), 47 states have call successors, (107) [2022-10-16 17:28:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 358 transitions. [2022-10-16 17:28:45,727 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 358 transitions. Word has length 118 [2022-10-16 17:28:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:45,728 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 358 transitions. [2022-10-16 17:28:45,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:28:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 358 transitions. [2022-10-16 17:28:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 17:28:45,730 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:45,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:45,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:45,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 17:28:45,945 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1761969484, now seen corresponding path program 1 times [2022-10-16 17:28:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:45,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303440579] [2022-10-16 17:28:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-16 17:28:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-16 17:28:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:28:46,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:46,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303440579] [2022-10-16 17:28:46,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303440579] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:46,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:46,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:28:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531370482] [2022-10-16 17:28:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:46,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 17:28:46,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 17:28:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:46,131 INFO L87 Difference]: Start difference. First operand 258 states and 358 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:28:46,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:46,381 INFO L93 Difference]: Finished difference Result 285 states and 393 transitions. [2022-10-16 17:28:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:28:46,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2022-10-16 17:28:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:46,389 INFO L225 Difference]: With dead ends: 285 [2022-10-16 17:28:46,389 INFO L226 Difference]: Without dead ends: 263 [2022-10-16 17:28:46,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:28:46,390 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 67 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:46,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 350 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-10-16 17:28:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 255. [2022-10-16 17:28:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 175 states have (on average 1.1485714285714286) internal successors, (201), 186 states have internal predecessors, (201), 47 states have call successors, (47), 12 states have call predecessors, (47), 24 states have return successors, (105), 56 states have call predecessors, (105), 46 states have call successors, (105) [2022-10-16 17:28:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 353 transitions. [2022-10-16 17:28:46,413 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 353 transitions. Word has length 74 [2022-10-16 17:28:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:46,414 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 353 transitions. [2022-10-16 17:28:46,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:28:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 353 transitions. [2022-10-16 17:28:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-16 17:28:46,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:46,417 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:46,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 17:28:46,418 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1407746804, now seen corresponding path program 2 times [2022-10-16 17:28:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:46,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726657913] [2022-10-16 17:28:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 17:28:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:28:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 52 proven. 155 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-10-16 17:28:47,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:47,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726657913] [2022-10-16 17:28:47,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726657913] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:47,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722279339] [2022-10-16 17:28:47,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:47,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:47,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:47,546 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:47,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:28:47,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:47,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:47,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:28:47,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 52 proven. 155 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-10-16 17:28:47,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 100 proven. 136 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-10-16 17:28:49,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722279339] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:49,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:49,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 16] total 27 [2022-10-16 17:28:49,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243136632] [2022-10-16 17:28:49,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:49,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:49,119 INFO L87 Difference]: Start difference. First operand 255 states and 353 transitions. Second operand has 28 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 27 states have internal predecessors, (87), 7 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (24), 19 states have call predecessors, (24), 7 states have call successors, (24) [2022-10-16 17:28:50,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:50,213 INFO L93 Difference]: Finished difference Result 432 states and 643 transitions. [2022-10-16 17:28:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 17:28:50,214 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 27 states have internal predecessors, (87), 7 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (24), 19 states have call predecessors, (24), 7 states have call successors, (24) Word has length 148 [2022-10-16 17:28:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:50,221 INFO L225 Difference]: With dead ends: 432 [2022-10-16 17:28:50,221 INFO L226 Difference]: Without dead ends: 430 [2022-10-16 17:28:50,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 319 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=659, Invalid=2533, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:28:50,224 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 247 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:50,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 701 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-10-16 17:28:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 305. [2022-10-16 17:28:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 215 states have (on average 1.1209302325581396) internal successors, (241), 226 states have internal predecessors, (241), 51 states have call successors, (51), 12 states have call predecessors, (51), 30 states have return successors, (205), 66 states have call predecessors, (205), 50 states have call successors, (205) [2022-10-16 17:28:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 497 transitions. [2022-10-16 17:28:50,260 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 497 transitions. Word has length 148 [2022-10-16 17:28:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:50,260 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 497 transitions. [2022-10-16 17:28:50,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 27 states have internal predecessors, (87), 7 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (24), 19 states have call predecessors, (24), 7 states have call successors, (24) [2022-10-16 17:28:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 497 transitions. [2022-10-16 17:28:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-16 17:28:50,264 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:50,264 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:50,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:50,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:28:50,478 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -863706774, now seen corresponding path program 1 times [2022-10-16 17:28:50,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:50,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139066116] [2022-10-16 17:28:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:28:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:28:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:28:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:28:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:28:51,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:51,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139066116] [2022-10-16 17:28:51,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139066116] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:51,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622547989] [2022-10-16 17:28:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:51,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:51,104 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:51,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:28:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:51,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:28:51,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:28:51,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:28:52,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622547989] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:52,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:52,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 46 [2022-10-16 17:28:52,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598969982] [2022-10-16 17:28:52,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:52,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:28:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:28:52,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2002, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:28:52,253 INFO L87 Difference]: Start difference. First operand 305 states and 497 transitions. Second operand has 47 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 30 states have internal predecessors, (85), 13 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2022-10-16 17:28:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:54,726 INFO L93 Difference]: Finished difference Result 377 states and 609 transitions. [2022-10-16 17:28:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-10-16 17:28:54,727 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 30 states have internal predecessors, (85), 13 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) Word has length 85 [2022-10-16 17:28:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:54,731 INFO L225 Difference]: With dead ends: 377 [2022-10-16 17:28:54,731 INFO L226 Difference]: Without dead ends: 376 [2022-10-16 17:28:54,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=817, Invalid=6493, Unknown=0, NotChecked=0, Total=7310 [2022-10-16 17:28:54,736 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 191 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:54,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1948 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:28:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-10-16 17:28:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 347. [2022-10-16 17:28:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 245 states have (on average 1.1142857142857143) internal successors, (273), 256 states have internal predecessors, (273), 56 states have call successors, (56), 13 states have call predecessors, (56), 37 states have return successors, (229), 77 states have call predecessors, (229), 55 states have call successors, (229) [2022-10-16 17:28:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 558 transitions. [2022-10-16 17:28:54,772 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 558 transitions. Word has length 85 [2022-10-16 17:28:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 558 transitions. [2022-10-16 17:28:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 30 states have internal predecessors, (85), 13 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2022-10-16 17:28:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 558 transitions. [2022-10-16 17:28:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-16 17:28:54,776 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:54,777 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:54,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:28:54,991 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash 907926961, now seen corresponding path program 1 times [2022-10-16 17:28:54,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:54,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075842720] [2022-10-16 17:28:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:28:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:28:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:28:55,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:55,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075842720] [2022-10-16 17:28:55,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075842720] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:55,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57429426] [2022-10-16 17:28:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:55,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:55,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:55,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:28:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 17:28:55,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:28:56,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 17:28:56,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57429426] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:56,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:56,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 46 [2022-10-16 17:28:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528812725] [2022-10-16 17:28:56,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:56,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:28:56,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:28:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:28:56,926 INFO L87 Difference]: Start difference. First operand 347 states and 558 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, (28), 6 states have call predecessors, (28), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) [2022-10-16 17:29:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:00,036 INFO L93 Difference]: Finished difference Result 542 states and 830 transitions. [2022-10-16 17:29:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 17:29:00,037 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, (28), 6 states have call predecessors, (28), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) Word has length 89 [2022-10-16 17:29:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:00,042 INFO L225 Difference]: With dead ends: 542 [2022-10-16 17:29:00,042 INFO L226 Difference]: Without dead ends: 541 [2022-10-16 17:29:00,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=821, Invalid=7735, Unknown=0, NotChecked=0, Total=8556 [2022-10-16 17:29:00,046 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 208 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:00,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1740 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:29:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-10-16 17:29:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 387. [2022-10-16 17:29:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 274 states have (on average 1.1094890510948905) internal successors, (304), 284 states have internal predecessors, (304), 61 states have call successors, (61), 14 states have call predecessors, (61), 43 states have return successors, (248), 88 states have call predecessors, (248), 60 states have call successors, (248) [2022-10-16 17:29:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 613 transitions. [2022-10-16 17:29:00,083 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 613 transitions. Word has length 89 [2022-10-16 17:29:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:00,084 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 613 transitions. [2022-10-16 17:29:00,084 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, (28), 6 states have call predecessors, (28), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) [2022-10-16 17:29:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 613 transitions. [2022-10-16 17:29:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-10-16 17:29:00,088 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:00,088 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 17:29:00,128 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 17:29:00,302 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 17:29:00,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 342652206, now seen corresponding path program 3 times [2022-10-16 17:29:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:00,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627705562] [2022-10-16 17:29:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 17:29:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:01,286 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 17:29:01,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:01,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627705562] [2022-10-16 17:29:01,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627705562] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:01,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47709966] [2022-10-16 17:29:01,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:01,291 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 17:29:01,314 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 17:29:01,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:29:01,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:01,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 71 conjunts are in the unsatisfiable core [2022-10-16 17:29:01,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:01,591 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 17:29:01,595 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 17:29:01,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 17:29:01,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 17:29:01,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:29:01,995 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 17:29:02,104 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 17:29:02,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:02,862 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 17:29:02,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47709966] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:02,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:02,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 38 [2022-10-16 17:29:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239269563] [2022-10-16 17:29:02,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-16 17:29:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-16 17:29:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:29:02,865 INFO L87 Difference]: Start difference. First operand 387 states and 613 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 17:29:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:05,035 INFO L93 Difference]: Finished difference Result 842 states and 1335 transitions. [2022-10-16 17:29:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 17:29:05,035 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 17:29:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:05,042 INFO L225 Difference]: With dead ends: 842 [2022-10-16 17:29:05,042 INFO L226 Difference]: Without dead ends: 638 [2022-10-16 17:29:05,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=595, Invalid=4097, Unknown=0, NotChecked=0, Total=4692 [2022-10-16 17:29:05,048 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 201 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:05,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2701 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1275 Invalid, 0 Unknown, 256 Unchecked, 0.9s Time] [2022-10-16 17:29:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-10-16 17:29:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 460. [2022-10-16 17:29:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 330 states have (on average 1.1) internal successors, (363), 340 states have internal predecessors, (363), 69 states have call successors, (69), 16 states have call predecessors, (69), 52 states have return successors, (331), 103 states have call predecessors, (331), 68 states have call successors, (331) [2022-10-16 17:29:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 763 transitions. [2022-10-16 17:29:05,100 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 763 transitions. Word has length 150 [2022-10-16 17:29:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:05,101 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 763 transitions. [2022-10-16 17:29:05,102 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 17:29:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 763 transitions. [2022-10-16 17:29:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-10-16 17:29:05,109 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:05,109 INFO L195 NwaCegarLoop]: trace histogram [27, 24, 14, 13, 13, 13, 13, 13, 11, 11, 11, 11, 10, 10, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:05,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:05,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:05,323 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1385586141, now seen corresponding path program 4 times [2022-10-16 17:29:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:05,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209529271] [2022-10-16 17:29:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 17:29:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-16 17:29:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-16 17:29:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-10-16 17:29:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 515 proven. 237 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2022-10-16 17:29:07,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:07,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209529271] [2022-10-16 17:29:07,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209529271] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:07,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533240079] [2022-10-16 17:29:07,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:07,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:07,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:07,098 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:07,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:29:07,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:07,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:07,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 17:29:07,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 515 proven. 237 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2022-10-16 17:29:07,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 576 proven. 209 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2022-10-16 17:29:09,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533240079] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:09,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:09,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 31 [2022-10-16 17:29:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071379328] [2022-10-16 17:29:09,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:29:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:29:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:29:09,412 INFO L87 Difference]: Start difference. First operand 460 states and 763 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 17:29:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:10,679 INFO L93 Difference]: Finished difference Result 692 states and 1159 transitions. [2022-10-16 17:29:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-16 17:29:10,680 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 268 [2022-10-16 17:29:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:10,691 INFO L225 Difference]: With dead ends: 692 [2022-10-16 17:29:10,691 INFO L226 Difference]: Without dead ends: 690 [2022-10-16 17:29:10,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 593 SyntacticMatches, 21 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2178 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=839, Invalid=3321, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 17:29:10,695 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 288 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:10,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 637 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-10-16 17:29:10,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 396. [2022-10-16 17:29:10,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 278 states have (on average 1.118705035971223) internal successors, (311), 288 states have internal predecessors, (311), 65 states have call successors, (65), 16 states have call predecessors, (65), 44 states have return successors, (187), 91 states have call predecessors, (187), 64 states have call successors, (187) [2022-10-16 17:29:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 563 transitions. [2022-10-16 17:29:10,750 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 563 transitions. Word has length 268 [2022-10-16 17:29:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:10,751 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 563 transitions. [2022-10-16 17:29:10,751 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 17:29:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 563 transitions. [2022-10-16 17:29:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 17:29:10,755 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:10,755 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:10,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:10,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:10,971 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1694525827, now seen corresponding path program 1 times [2022-10-16 17:29:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450242358] [2022-10-16 17:29:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:29:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:29:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:29:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:29:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:29:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:29:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:29:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:29:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 17:29:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 17:29:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 16 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:29:11,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:11,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450242358] [2022-10-16 17:29:11,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450242358] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:11,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175515574] [2022-10-16 17:29:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:11,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:11,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:11,648 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:11,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:29:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-16 17:29:11,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 26 proven. 57 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:29:12,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 26 proven. 66 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:29:12,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175515574] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:12,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:12,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 22] total 51 [2022-10-16 17:29:12,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638447457] [2022-10-16 17:29:12,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-10-16 17:29:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-10-16 17:29:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:29:12,667 INFO L87 Difference]: Start difference. First operand 396 states and 563 transitions. Second operand has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 32 states have internal predecessors, (93), 11 states have call successors, (35), 11 states have call predecessors, (35), 9 states have return successors, (22), 14 states have call predecessors, (22), 11 states have call successors, (22) [2022-10-16 17:29:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:15,830 INFO L93 Difference]: Finished difference Result 476 states and 662 transitions. [2022-10-16 17:29:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-16 17:29:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 32 states have internal predecessors, (93), 11 states have call successors, (35), 11 states have call predecessors, (35), 9 states have return successors, (22), 14 states have call predecessors, (22), 11 states have call successors, (22) Word has length 96 [2022-10-16 17:29:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:15,835 INFO L225 Difference]: With dead ends: 476 [2022-10-16 17:29:15,835 INFO L226 Difference]: Without dead ends: 475 [2022-10-16 17:29:15,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1425, Invalid=9081, Unknown=0, NotChecked=0, Total=10506 [2022-10-16 17:29:15,838 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 197 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:15,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1736 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:29:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-10-16 17:29:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 458. [2022-10-16 17:29:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 321 states have (on average 1.1277258566978192) internal successors, (362), 334 states have internal predecessors, (362), 76 states have call successors, (76), 20 states have call predecessors, (76), 52 states have return successors, (209), 103 states have call predecessors, (209), 75 states have call successors, (209) [2022-10-16 17:29:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 647 transitions. [2022-10-16 17:29:15,873 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 647 transitions. Word has length 96 [2022-10-16 17:29:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:15,873 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 647 transitions. [2022-10-16 17:29:15,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 32 states have internal predecessors, (93), 11 states have call successors, (35), 11 states have call predecessors, (35), 9 states have return successors, (22), 14 states have call predecessors, (22), 11 states have call successors, (22) [2022-10-16 17:29:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 647 transitions. [2022-10-16 17:29:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-10-16 17:29:15,879 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:15,880 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 14, 14, 14, 13, 13, 13, 11, 11, 10, 10, 10, 10, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:15,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:16,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:16,094 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:16,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 990253345, now seen corresponding path program 3 times [2022-10-16 17:29:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:16,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123435734] [2022-10-16 17:29:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:29:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-16 17:29:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 17:29:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-16 17:29:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-10-16 17:29:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:18,005 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 2 [2022-10-16 17:29:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 389 proven. 356 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2022-10-16 17:29:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:18,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123435734] [2022-10-16 17:29:18,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123435734] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838251229] [2022-10-16 17:29:18,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:18,047 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:18,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:29:18,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:29:18,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:18,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 120 conjunts are in the unsatisfiable core [2022-10-16 17:29:18,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:18,467 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 17:29:18,470 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 17:29:18,712 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-16 17:29:18,712 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 1 case distinctions, treesize of input 16 treesize of output 22 [2022-10-16 17:29:18,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-10-16 17:29:18,737 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-16 17:29:18,738 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 1 case distinctions, treesize of input 16 treesize of output 22 [2022-10-16 17:29:18,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-10-16 17:29:18,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-16 17:29:18,807 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 27 treesize of output 26 [2022-10-16 17:29:20,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-10-16 17:29:20,716 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:29:20,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 21 [2022-10-16 17:29:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 164 proven. 39 refuted. 1 times theorem prover too weak. 1729 trivial. 0 not checked. [2022-10-16 17:29:20,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:21,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838251229] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:21,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:29:21,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27] total 44 [2022-10-16 17:29:21,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52445620] [2022-10-16 17:29:21,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:21,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 17:29:21,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 17:29:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2464, Unknown=3, NotChecked=0, Total=2652 [2022-10-16 17:29:21,944 INFO L87 Difference]: Start difference. First operand 458 states and 647 transitions. Second operand has 44 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 15 states have call successors, (27), 7 states have call predecessors, (27), 16 states have return successors, (31), 21 states have call predecessors, (31), 13 states have call successors, (31) [2022-10-16 17:29:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:25,521 INFO L93 Difference]: Finished difference Result 981 states and 1385 transitions. [2022-10-16 17:29:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 17:29:25,522 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 15 states have call successors, (27), 7 states have call predecessors, (27), 16 states have return successors, (31), 21 states have call predecessors, (31), 13 states have call successors, (31) Word has length 269 [2022-10-16 17:29:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:25,529 INFO L225 Difference]: With dead ends: 981 [2022-10-16 17:29:25,530 INFO L226 Difference]: Without dead ends: 818 [2022-10-16 17:29:25,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 545 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=907, Invalid=8990, Unknown=3, NotChecked=0, Total=9900 [2022-10-16 17:29:25,535 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 248 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 860 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:25,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1750 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1710 Invalid, 0 Unknown, 860 Unchecked, 1.2s Time] [2022-10-16 17:29:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-10-16 17:29:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 567. [2022-10-16 17:29:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 406 states have (on average 1.1157635467980296) internal successors, (453), 420 states have internal predecessors, (453), 84 states have call successors, (84), 24 states have call predecessors, (84), 68 states have return successors, (320), 122 states have call predecessors, (320), 83 states have call successors, (320) [2022-10-16 17:29:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 857 transitions. [2022-10-16 17:29:25,589 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 857 transitions. Word has length 269 [2022-10-16 17:29:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:25,589 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 857 transitions. [2022-10-16 17:29:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 15 states have call successors, (27), 7 states have call predecessors, (27), 16 states have return successors, (31), 21 states have call predecessors, (31), 13 states have call successors, (31) [2022-10-16 17:29:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 857 transitions. [2022-10-16 17:29:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-10-16 17:29:25,596 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:25,596 INFO L195 NwaCegarLoop]: trace histogram [23, 21, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:25,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:25,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:25,809 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:25,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1199866240, now seen corresponding path program 4 times [2022-10-16 17:29:25,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:25,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350931390] [2022-10-16 17:29:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:25,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-16 17:29:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 17:29:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:26,960 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 17:29:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-16 17:29:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 185 proven. 328 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-10-16 17:29:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350931390] [2022-10-16 17:29:27,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350931390] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169687553] [2022-10-16 17:29:27,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:27,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:27,563 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:27,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:29:27,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:27,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:27,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:29:27,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 185 proven. 328 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-10-16 17:29:28,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 251 proven. 303 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2022-10-16 17:29:30,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169687553] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:30,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:30,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 31 [2022-10-16 17:29:30,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598684268] [2022-10-16 17:29:30,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:30,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:29:30,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:29:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:29:30,699 INFO L87 Difference]: Start difference. First operand 567 states and 857 transitions. Second operand has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 31 states have internal predecessors, (106), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (28), 22 states have call predecessors, (28), 7 states have call successors, (28) [2022-10-16 17:29:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:32,033 INFO L93 Difference]: Finished difference Result 1030 states and 1862 transitions. [2022-10-16 17:29:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:29:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 31 states have internal predecessors, (106), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (28), 22 states have call predecessors, (28), 7 states have call successors, (28) Word has length 228 [2022-10-16 17:29:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:32,045 INFO L225 Difference]: With dead ends: 1030 [2022-10-16 17:29:32,045 INFO L226 Difference]: Without dead ends: 1028 [2022-10-16 17:29:32,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 511 SyntacticMatches, 27 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=779, Invalid=3127, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:29:32,049 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 234 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:32,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 765 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:32,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-10-16 17:29:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 725. [2022-10-16 17:29:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 535 states have (on average 1.0878504672897196) internal successors, (582), 549 states have internal predecessors, (582), 93 states have call successors, (93), 24 states have call predecessors, (93), 88 states have return successors, (866), 151 states have call predecessors, (866), 92 states have call successors, (866) [2022-10-16 17:29:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1541 transitions. [2022-10-16 17:29:32,170 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1541 transitions. Word has length 228 [2022-10-16 17:29:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:32,170 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1541 transitions. [2022-10-16 17:29:32,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 31 states have internal predecessors, (106), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (28), 22 states have call predecessors, (28), 7 states have call successors, (28) [2022-10-16 17:29:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1541 transitions. [2022-10-16 17:29:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-16 17:29:32,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:32,180 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 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 17:29:32,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:32,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:32,394 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 17:29:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1040034506, now seen corresponding path program 1 times [2022-10-16 17:29:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438894926] [2022-10-16 17:29:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:32,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:29:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:29:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-16 17:29:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-16 17:29:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-16 17:29:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438894926] [2022-10-16 17:29:33,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438894926] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085017643] [2022-10-16 17:29:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:33,012 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:33,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:29:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-16 17:29:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-16 17:29:33,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:29:34,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085017643] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:34,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:34,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 26] total 53 [2022-10-16 17:29:34,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205954248] [2022-10-16 17:29:34,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:34,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 17:29:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 17:29:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:29:34,296 INFO L87 Difference]: Start difference. First operand 725 states and 1541 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, (32), 10 states have call predecessors, (32), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) [2022-10-16 17:29:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:38,140 INFO L93 Difference]: Finished difference Result 1044 states and 1969 transitions. [2022-10-16 17:29:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-10-16 17:29:38,141 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, (32), 10 states have call predecessors, (32), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) Word has length 97 [2022-10-16 17:29:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:38,153 INFO L225 Difference]: With dead ends: 1044 [2022-10-16 17:29:38,153 INFO L226 Difference]: Without dead ends: 1043 [2022-10-16 17:29:38,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1455, Invalid=10977, Unknown=0, NotChecked=0, Total=12432 [2022-10-16 17:29:38,160 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 459 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:38,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1613 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-16 17:29:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-10-16 17:29:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 808. [2022-10-16 17:29:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 593 states have (on average 1.0961214165261384) internal successors, (650), 610 states have internal predecessors, (650), 107 states have call successors, (107), 29 states have call predecessors, (107), 99 states have return successors, (895), 168 states have call predecessors, (895), 106 states have call successors, (895) [2022-10-16 17:29:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1652 transitions. [2022-10-16 17:29:38,348 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1652 transitions. Word has length 97 [2022-10-16 17:29:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:38,349 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1652 transitions. [2022-10-16 17:29:38,349 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, (32), 10 states have call predecessors, (32), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) [2022-10-16 17:29:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1652 transitions. [2022-10-16 17:29:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-16 17:29:38,357 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:38,358 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:38,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 17:29:38,572 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 17:29:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash 984991062, now seen corresponding path program 2 times [2022-10-16 17:29:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:38,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849196592] [2022-10-16 17:29:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:29:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-16 17:29:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-16 17:29:39,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:39,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849196592] [2022-10-16 17:29:39,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849196592] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:39,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55401216] [2022-10-16 17:29:39,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:39,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:39,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:39,150 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:39,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:29:39,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:39,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:39,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:29:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-16 17:29:39,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-16 17:29:40,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55401216] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:40,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:40,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 41 [2022-10-16 17:29:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251852377] [2022-10-16 17:29:40,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:40,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 17:29:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 17:29:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 17:29:40,654 INFO L87 Difference]: Start difference. First operand 808 states and 1652 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, (24), 6 states have call predecessors, (24), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) [2022-10-16 17:29:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:42,770 INFO L93 Difference]: Finished difference Result 1157 states and 2182 transitions. [2022-10-16 17:29:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:29:42,771 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, (24), 6 states have call predecessors, (24), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) Word has length 110 [2022-10-16 17:29:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:42,784 INFO L225 Difference]: With dead ends: 1157 [2022-10-16 17:29:42,784 INFO L226 Difference]: Without dead ends: 1156 [2022-10-16 17:29:42,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 226 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=529, Invalid=4583, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:29:42,789 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 235 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:42,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1337 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:29:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-10-16 17:29:42,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 942. [2022-10-16 17:29:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 694 states have (on average 1.0936599423631124) internal successors, (759), 713 states have internal predecessors, (759), 124 states have call successors, (124), 33 states have call predecessors, (124), 115 states have return successors, (995), 195 states have call predecessors, (995), 123 states have call successors, (995) [2022-10-16 17:29:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1878 transitions. [2022-10-16 17:29:42,929 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1878 transitions. Word has length 110 [2022-10-16 17:29:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:42,930 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1878 transitions. [2022-10-16 17:29:42,931 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, (24), 6 states have call predecessors, (24), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) [2022-10-16 17:29:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1878 transitions. [2022-10-16 17:29:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-10-16 17:29:42,942 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:42,942 INFO L195 NwaCegarLoop]: trace histogram [23, 21, 12, 11, 11, 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 17:29:42,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:43,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 17:29:43,159 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1650294358, now seen corresponding path program 5 times [2022-10-16 17:29:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:43,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425452067] [2022-10-16 17:29:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:29:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 17:29:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 182 proven. 373 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2022-10-16 17:29:44,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:44,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425452067] [2022-10-16 17:29:44,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425452067] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:44,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102678134] [2022-10-16 17:29:44,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:29:44,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:44,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:44,445 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:44,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:29:44,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-10-16 17:29:44,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:44,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:29:44,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 182 proven. 373 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2022-10-16 17:29:45,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 253 proven. 331 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2022-10-16 17:29:47,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102678134] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:47,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:47,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 19] total 34 [2022-10-16 17:29:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946624361] [2022-10-16 17:29:47,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:29:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:29:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 17:29:47,477 INFO L87 Difference]: Start difference. First operand 942 states and 1878 transitions. Second operand has 35 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (32), 25 states have call predecessors, (32), 8 states have call successors, (32) [2022-10-16 17:29:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:48,999 INFO L93 Difference]: Finished difference Result 1420 states and 2845 transitions. [2022-10-16 17:29:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:29:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (32), 25 states have call predecessors, (32), 8 states have call successors, (32) Word has length 207 [2022-10-16 17:29:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:49,018 INFO L225 Difference]: With dead ends: 1420 [2022-10-16 17:29:49,018 INFO L226 Difference]: Without dead ends: 1418 [2022-10-16 17:29:49,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 459 SyntacticMatches, 27 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2945 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1062, Invalid=4194, Unknown=0, NotChecked=0, Total=5256 [2022-10-16 17:29:49,024 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 357 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:49,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 701 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-10-16 17:29:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 753. [2022-10-16 17:29:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 537 states have (on average 1.1210428305400373) internal successors, (602), 556 states have internal predecessors, (602), 117 states have call successors, (117), 33 states have call predecessors, (117), 90 states have return successors, (386), 163 states have call predecessors, (386), 116 states have call successors, (386) [2022-10-16 17:29:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1105 transitions. [2022-10-16 17:29:49,194 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1105 transitions. Word has length 207 [2022-10-16 17:29:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:49,194 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1105 transitions. [2022-10-16 17:29:49,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (32), 25 states have call predecessors, (32), 8 states have call successors, (32) [2022-10-16 17:29:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1105 transitions. [2022-10-16 17:29:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-16 17:29:49,200 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:49,201 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:49,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:49,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 17:29:49,416 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash 879145750, now seen corresponding path program 3 times [2022-10-16 17:29:49,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:49,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376318835] [2022-10-16 17:29:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:29:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-16 17:29:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-10-16 17:29:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:49,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376318835] [2022-10-16 17:29:49,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376318835] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:49,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817215867] [2022-10-16 17:29:49,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:49,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:50,002 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:50,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:29:50,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 17:29:50,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:50,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 79 conjunts are in the unsatisfiable core [2022-10-16 17:29:50,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:50,367 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 17:29:50,371 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 17:29:50,445 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 17:29:50,452 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 17:29:51,206 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 17:29:51,207 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 17:29:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-10-16 17:29:51,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-10-16 17:29:51,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817215867] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:51,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:51,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 14] total 44 [2022-10-16 17:29:51,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187227976] [2022-10-16 17:29:51,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 17:29:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 17:29:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1770, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 17:29:51,994 INFO L87 Difference]: Start difference. First operand 753 states and 1105 transitions. Second operand has 44 states, 42 states have (on average 2.880952380952381) internal successors, (121), 31 states have internal predecessors, (121), 13 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (34), 19 states have call predecessors, (34), 12 states have call successors, (34) [2022-10-16 17:29:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:55,912 INFO L93 Difference]: Finished difference Result 1509 states and 2267 transitions. [2022-10-16 17:29:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 17:29:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.880952380952381) internal successors, (121), 31 states have internal predecessors, (121), 13 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (34), 19 states have call predecessors, (34), 12 states have call successors, (34) Word has length 110 [2022-10-16 17:29:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:55,922 INFO L225 Difference]: With dead ends: 1509 [2022-10-16 17:29:55,922 INFO L226 Difference]: Without dead ends: 1148 [2022-10-16 17:29:55,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 231 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=739, Invalid=8003, Unknown=0, NotChecked=0, Total=8742 [2022-10-16 17:29:55,927 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 204 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 3878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 572 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:55,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 2513 Invalid, 3878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3199 Invalid, 0 Unknown, 572 Unchecked, 1.9s Time] [2022-10-16 17:29:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-10-16 17:29:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 980. [2022-10-16 17:29:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 704 states have (on average 1.109375) internal successors, (781), 729 states have internal predecessors, (781), 148 states have call successors, (148), 49 states have call predecessors, (148), 119 states have return successors, (515), 201 states have call predecessors, (515), 147 states have call successors, (515) [2022-10-16 17:29:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1444 transitions. [2022-10-16 17:29:56,012 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1444 transitions. Word has length 110 [2022-10-16 17:29:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:56,013 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1444 transitions. [2022-10-16 17:29:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.880952380952381) internal successors, (121), 31 states have internal predecessors, (121), 13 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (34), 19 states have call predecessors, (34), 12 states have call successors, (34) [2022-10-16 17:29:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1444 transitions. [2022-10-16 17:29:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-10-16 17:29:56,022 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:56,023 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:56,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:56,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:56,236 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:56,237 INFO L85 PathProgramCache]: Analyzing trace with hash -267965676, now seen corresponding path program 5 times [2022-10-16 17:29:56,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:56,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938722483] [2022-10-16 17:29:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:56,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 17:29:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-16 17:29:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 197 proven. 515 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2022-10-16 17:29:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938722483] [2022-10-16 17:29:57,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938722483] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47463863] [2022-10-16 17:29:57,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:29:57,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:57,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:57,817 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:57,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:29:58,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-10-16 17:29:58,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:58,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-16 17:29:58,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 192 proven. 520 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2022-10-16 17:29:58,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 333 proven. 432 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2022-10-16 17:30:02,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47463863] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:02,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:02,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 24] total 42 [2022-10-16 17:30:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733300910] [2022-10-16 17:30:02,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:02,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 17:30:02,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 17:30:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:30:02,042 INFO L87 Difference]: Start difference. First operand 980 states and 1444 transitions. Second operand has 43 states, 42 states have (on average 3.380952380952381) internal successors, (142), 42 states have internal predecessors, (142), 9 states have call successors, (19), 2 states have call predecessors, (19), 11 states have return successors, (38), 31 states have call predecessors, (38), 9 states have call successors, (38) [2022-10-16 17:30:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:03,907 INFO L93 Difference]: Finished difference Result 1688 states and 2619 transitions. [2022-10-16 17:30:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:30:03,915 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 3.380952380952381) internal successors, (142), 42 states have internal predecessors, (142), 9 states have call successors, (19), 2 states have call predecessors, (19), 11 states have return successors, (38), 31 states have call predecessors, (38), 9 states have call successors, (38) Word has length 238 [2022-10-16 17:30:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:03,929 INFO L225 Difference]: With dead ends: 1688 [2022-10-16 17:30:03,929 INFO L226 Difference]: Without dead ends: 1686 [2022-10-16 17:30:03,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 514 SyntacticMatches, 32 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4745 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1618, Invalid=6572, Unknown=0, NotChecked=0, Total=8190 [2022-10-16 17:30:03,934 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 348 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:03,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 701 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:30:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-10-16 17:30:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1123. [2022-10-16 17:30:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 818 states have (on average 1.0941320293398533) internal successors, (895), 843 states have internal predecessors, (895), 160 states have call successors, (160), 49 states have call predecessors, (160), 136 states have return successors, (944), 230 states have call predecessors, (944), 159 states have call successors, (944) [2022-10-16 17:30:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1999 transitions. [2022-10-16 17:30:04,056 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1999 transitions. Word has length 238 [2022-10-16 17:30:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:04,057 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1999 transitions. [2022-10-16 17:30:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 3.380952380952381) internal successors, (142), 42 states have internal predecessors, (142), 9 states have call successors, (19), 2 states have call predecessors, (19), 11 states have return successors, (38), 31 states have call predecessors, (38), 9 states have call successors, (38) [2022-10-16 17:30:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1999 transitions. [2022-10-16 17:30:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-16 17:30:04,068 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:04,068 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 5, 5, 5, 4, 4, 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] [2022-10-16 17:30:04,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:04,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 17:30:04,283 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1713488502, now seen corresponding path program 2 times [2022-10-16 17:30:04,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:04,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80842136] [2022-10-16 17:30:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:04,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:30:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:30:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:30:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:30:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:30:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:30:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:30:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:30:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:30:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:30:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 17:30:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-16 17:30:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 25 proven. 85 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:30:05,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:05,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80842136] [2022-10-16 17:30:05,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80842136] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:05,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079688960] [2022-10-16 17:30:05,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:05,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:05,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:05,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:05,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:30:05,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:05,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:05,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 44 conjunts are in the unsatisfiable core [2022-10-16 17:30:05,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 36 proven. 74 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:30:05,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 32 proven. 99 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:30:06,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079688960] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:06,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:06,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 29] total 66 [2022-10-16 17:30:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332008489] [2022-10-16 17:30:06,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:06,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-16 17:30:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-16 17:30:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=4127, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:30:06,983 INFO L87 Difference]: Start difference. First operand 1123 states and 1999 transitions. Second operand has 67 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 42 states have internal predecessors, (111), 17 states have call successors, (39), 11 states have call predecessors, (39), 13 states have return successors, (28), 19 states have call predecessors, (28), 17 states have call successors, (28) [2022-10-16 17:30:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:13,617 INFO L93 Difference]: Finished difference Result 1363 states and 2375 transitions. [2022-10-16 17:30:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-10-16 17:30:13,617 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 42 states have internal predecessors, (111), 17 states have call successors, (39), 11 states have call predecessors, (39), 13 states have return successors, (28), 19 states have call predecessors, (28), 17 states have call successors, (28) Word has length 107 [2022-10-16 17:30:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:13,627 INFO L225 Difference]: With dead ends: 1363 [2022-10-16 17:30:13,627 INFO L226 Difference]: Without dead ends: 1362 [2022-10-16 17:30:13,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8260 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3259, Invalid=24797, Unknown=0, NotChecked=0, Total=28056 [2022-10-16 17:30:13,632 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 281 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:13,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 2512 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-16 17:30:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-10-16 17:30:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1257. [2022-10-16 17:30:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 912 states have (on average 1.093201754385965) internal successors, (997), 941 states have internal predecessors, (997), 182 states have call successors, (182), 53 states have call predecessors, (182), 154 states have return successors, (1019), 262 states have call predecessors, (1019), 181 states have call successors, (1019) [2022-10-16 17:30:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 2198 transitions. [2022-10-16 17:30:13,758 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 2198 transitions. Word has length 107 [2022-10-16 17:30:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:13,758 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 2198 transitions. [2022-10-16 17:30:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 42 states have internal predecessors, (111), 17 states have call successors, (39), 11 states have call predecessors, (39), 13 states have return successors, (28), 19 states have call predecessors, (28), 17 states have call successors, (28) [2022-10-16 17:30:13,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 2198 transitions. [2022-10-16 17:30:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-16 17:30:13,769 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:13,769 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:13,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:13,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 17:30:13,983 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:13,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1861285022, now seen corresponding path program 4 times [2022-10-16 17:30:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:13,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059402743] [2022-10-16 17:30:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:30:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:30:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 17:30:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-16 17:30:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-10-16 17:30:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 10 proven. 77 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-10-16 17:30:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059402743] [2022-10-16 17:30:14,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059402743] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815334849] [2022-10-16 17:30:14,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:30:14,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:14,823 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:14,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:30:15,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:30:15,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:15,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-16 17:30:15,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 10 proven. 77 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-10-16 17:30:15,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 42 proven. 64 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-10-16 17:30:16,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815334849] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:16,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:16,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 23] total 45 [2022-10-16 17:30:16,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773392263] [2022-10-16 17:30:16,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:16,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 17:30:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:16,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 17:30:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 17:30:16,749 INFO L87 Difference]: Start difference. First operand 1257 states and 2198 transitions. Second operand has 46 states, 45 states have (on average 2.533333333333333) internal successors, (114), 37 states have internal predecessors, (114), 10 states have call successors, (26), 6 states have call predecessors, (26), 12 states have return successors, (28), 22 states have call predecessors, (28), 10 states have call successors, (28) [2022-10-16 17:30:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:19,768 INFO L93 Difference]: Finished difference Result 2121 states and 4143 transitions. [2022-10-16 17:30:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:30:19,769 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.533333333333333) internal successors, (114), 37 states have internal predecessors, (114), 10 states have call successors, (26), 6 states have call predecessors, (26), 12 states have return successors, (28), 22 states have call predecessors, (28), 10 states have call successors, (28) Word has length 136 [2022-10-16 17:30:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:19,797 INFO L225 Difference]: With dead ends: 2121 [2022-10-16 17:30:19,798 INFO L226 Difference]: Without dead ends: 2120 [2022-10-16 17:30:19,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 285 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=764, Invalid=6546, Unknown=0, NotChecked=0, Total=7310 [2022-10-16 17:30:19,803 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 302 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:19,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1792 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:30:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2022-10-16 17:30:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1528. [2022-10-16 17:30:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1126 states have (on average 1.0817051509769093) internal successors, (1218), 1159 states have internal predecessors, (1218), 205 states have call successors, (205), 58 states have call predecessors, (205), 188 states have return successors, (1729), 310 states have call predecessors, (1729), 204 states have call successors, (1729) [2022-10-16 17:30:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 3152 transitions. [2022-10-16 17:30:20,083 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 3152 transitions. Word has length 136 [2022-10-16 17:30:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:20,084 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 3152 transitions. [2022-10-16 17:30:20,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.533333333333333) internal successors, (114), 37 states have internal predecessors, (114), 10 states have call successors, (26), 6 states have call predecessors, (26), 12 states have return successors, (28), 22 states have call predecessors, (28), 10 states have call successors, (28) [2022-10-16 17:30:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 3152 transitions. [2022-10-16 17:30:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-10-16 17:30:20,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:20,113 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 20, 20, 20, 19, 19, 19, 17, 17, 17, 17, 16, 16, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:20,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:20,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:20,327 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash 324069807, now seen corresponding path program 6 times [2022-10-16 17:30:20,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:20,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028279283] [2022-10-16 17:30:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [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 1 [2022-10-16 17:30:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:30:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:30:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:30:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 17:30:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-10-16 17:30:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-10-16 17:30:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4062 backedges. 1237 proven. 523 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2022-10-16 17:30:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028279283] [2022-10-16 17:30:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028279283] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986774134] [2022-10-16 17:30:22,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:30:22,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:22,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:22,781 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:22,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 17:30:23,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-10-16 17:30:23,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:23,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 17:30:23,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:23,235 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 17:30:23,291 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 20 treesize of output 19 [2022-10-16 17:30:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4062 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 4025 trivial. 0 not checked. [2022-10-16 17:30:23,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4062 backedges. 156 proven. 391 refuted. 0 times theorem prover too weak. 3515 trivial. 0 not checked. [2022-10-16 17:30:24,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986774134] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:24,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:24,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 15] total 48 [2022-10-16 17:30:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050191978] [2022-10-16 17:30:24,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:24,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:30:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:30:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2068, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:30:24,427 INFO L87 Difference]: Start difference. First operand 1528 states and 3152 transitions. Second operand has 48 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 42 states have internal predecessors, (128), 15 states have call successors, (30), 7 states have call predecessors, (30), 19 states have return successors, (37), 22 states have call predecessors, (37), 15 states have call successors, (37) [2022-10-16 17:30:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:25,545 INFO L93 Difference]: Finished difference Result 3079 states and 6383 transitions. [2022-10-16 17:30:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-16 17:30:25,545 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 42 states have internal predecessors, (128), 15 states have call successors, (30), 7 states have call predecessors, (30), 19 states have return successors, (37), 22 states have call predecessors, (37), 15 states have call successors, (37) Word has length 341 [2022-10-16 17:30:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:25,574 INFO L225 Difference]: With dead ends: 3079 [2022-10-16 17:30:25,574 INFO L226 Difference]: Without dead ends: 2361 [2022-10-16 17:30:25,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 772 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=408, Invalid=4148, Unknown=0, NotChecked=0, Total=4556 [2022-10-16 17:30:25,588 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 158 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 562 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:25,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 3221 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 727 Invalid, 0 Unknown, 562 Unchecked, 0.5s Time] [2022-10-16 17:30:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-10-16 17:30:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1684. [2022-10-16 17:30:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1253 states have (on average 1.0766161213088588) internal successors, (1349), 1287 states have internal predecessors, (1349), 211 states have call successors, (211), 60 states have call predecessors, (211), 211 states have return successors, (2199), 336 states have call predecessors, (2199), 210 states have call successors, (2199) [2022-10-16 17:30:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3759 transitions. [2022-10-16 17:30:25,848 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3759 transitions. Word has length 341 [2022-10-16 17:30:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:25,848 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3759 transitions. [2022-10-16 17:30:25,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 42 states have internal predecessors, (128), 15 states have call successors, (30), 7 states have call predecessors, (30), 19 states have return successors, (37), 22 states have call predecessors, (37), 15 states have call successors, (37) [2022-10-16 17:30:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3759 transitions. [2022-10-16 17:30:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-10-16 17:30:25,870 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:25,871 INFO L195 NwaCegarLoop]: trace histogram [31, 28, 16, 15, 15, 15, 15, 15, 13, 13, 12, 12, 12, 12, 7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:25,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:26,084 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1931231775, now seen corresponding path program 6 times [2022-10-16 17:30:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:26,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051102541] [2022-10-16 17:30:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-16 17:30:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:30:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 17:30:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 17:30:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-16 17:30:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-10-16 17:30:27,592 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 2 [2022-10-16 17:30:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 517 proven. 515 refuted. 0 times theorem prover too weak. 1443 trivial. 0 not checked. [2022-10-16 17:30:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051102541] [2022-10-16 17:30:28,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051102541] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233006910] [2022-10-16 17:30:28,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:30:28,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:28,146 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:28,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 17:30:29,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-10-16 17:30:29,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:29,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:30:29,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:29,130 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 17:30:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 44 proven. 13 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2022-10-16 17:30:29,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 93 proven. 264 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2022-10-16 17:30:29,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233006910] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:29,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:29,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 13] total 38 [2022-10-16 17:30:29,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113292322] [2022-10-16 17:30:29,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:29,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-16 17:30:29,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-16 17:30:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:30:29,925 INFO L87 Difference]: Start difference. First operand 1684 states and 3759 transitions. Second operand has 38 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 13 states have call successors, (31), 4 states have call predecessors, (31), 16 states have return successors, (35), 21 states have call predecessors, (35), 13 states have call successors, (35) [2022-10-16 17:30:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:31,825 INFO L93 Difference]: Finished difference Result 3359 states and 7508 transitions. [2022-10-16 17:30:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:30:31,825 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 13 states have call successors, (31), 4 states have call predecessors, (31), 16 states have return successors, (35), 21 states have call predecessors, (35), 13 states have call successors, (35) Word has length 295 [2022-10-16 17:30:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:31,862 INFO L225 Difference]: With dead ends: 3359 [2022-10-16 17:30:31,862 INFO L226 Difference]: Without dead ends: 2576 [2022-10-16 17:30:31,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=609, Invalid=5243, Unknown=0, NotChecked=0, Total=5852 [2022-10-16 17:30:31,880 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 243 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:31,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1380 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1008 Invalid, 0 Unknown, 368 Unchecked, 0.7s Time] [2022-10-16 17:30:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2022-10-16 17:30:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1848. [2022-10-16 17:30:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1386 states have (on average 1.072150072150072) internal successors, (1486), 1421 states have internal predecessors, (1486), 219 states have call successors, (219), 61 states have call predecessors, (219), 234 states have return successors, (2928), 365 states have call predecessors, (2928), 218 states have call successors, (2928) [2022-10-16 17:30:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4633 transitions. [2022-10-16 17:30:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4633 transitions. Word has length 295 [2022-10-16 17:30:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:32,231 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 4633 transitions. [2022-10-16 17:30:32,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 13 states have call successors, (31), 4 states have call predecessors, (31), 16 states have return successors, (35), 21 states have call predecessors, (35), 13 states have call successors, (35) [2022-10-16 17:30:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4633 transitions. [2022-10-16 17:30:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-10-16 17:30:32,255 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:32,256 INFO L195 NwaCegarLoop]: trace histogram [34, 31, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 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 17:30:32,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:32,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:32,469 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1850174655, now seen corresponding path program 7 times [2022-10-16 17:30:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:32,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646402174] [2022-10-16 17:30:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:30:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 17:30:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-16 17:30:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 567 proven. 718 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-10-16 17:30:34,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:34,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646402174] [2022-10-16 17:30:34,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646402174] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:34,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289770841] [2022-10-16 17:30:34,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:30:34,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:34,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:34,565 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:34,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 17:30:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:35,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:30:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 562 proven. 723 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-10-16 17:30:35,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 739 proven. 603 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2022-10-16 17:30:40,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289770841] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:40,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:40,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 44 [2022-10-16 17:30:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197344246] [2022-10-16 17:30:40,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:40,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:30:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:30:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=1528, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:30:40,099 INFO L87 Difference]: Start difference. First operand 1848 states and 4633 transitions. Second operand has 45 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (40), 32 states have call predecessors, (40), 9 states have call successors, (40) [2022-10-16 17:30:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:42,355 INFO L93 Difference]: Finished difference Result 3221 states and 9665 transitions. [2022-10-16 17:30:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:30:42,356 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (40), 32 states have call predecessors, (40), 9 states have call successors, (40) Word has length 288 [2022-10-16 17:30:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:42,405 INFO L225 Difference]: With dead ends: 3221 [2022-10-16 17:30:42,405 INFO L226 Difference]: Without dead ends: 3219 [2022-10-16 17:30:42,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 639 SyntacticMatches, 37 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5649 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1818, Invalid=7494, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 17:30:42,413 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 469 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:42,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 637 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:30:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-10-16 17:30:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2070. [2022-10-16 17:30:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1557 states have (on average 1.0642260757867694) internal successors, (1657), 1592 states have internal predecessors, (1657), 246 states have call successors, (246), 61 states have call predecessors, (246), 258 states have return successors, (5213), 416 states have call predecessors, (5213), 245 states have call successors, (5213) [2022-10-16 17:30:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 7116 transitions. [2022-10-16 17:30:42,999 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 7116 transitions. Word has length 288 [2022-10-16 17:30:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:43,000 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 7116 transitions. [2022-10-16 17:30:43,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (40), 32 states have call predecessors, (40), 9 states have call successors, (40) [2022-10-16 17:30:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 7116 transitions. [2022-10-16 17:30:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-16 17:30:43,011 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:43,012 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:43,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:43,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:43,225 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:43,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1660188632, now seen corresponding path program 3 times [2022-10-16 17:30:43,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:43,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297037805] [2022-10-16 17:30:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:30:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:30:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:30:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:30:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:30:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:30:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:30:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:30:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:30:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:30:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 17:30:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-10-16 17:30:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297037805] [2022-10-16 17:30:44,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297037805] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:44,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081847720] [2022-10-16 17:30:44,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:30:44,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:44,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:44,526 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:44,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-16 17:30:44,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 17:30:44,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:30:44,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-10-16 17:30:44,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:30:44,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081847720] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:30:44,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:30:44,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [28] total 31 [2022-10-16 17:30:44,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479629583] [2022-10-16 17:30:44,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:30:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:30:44,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:44,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:30:44,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2022-10-16 17:30:44,990 INFO L87 Difference]: Start difference. First operand 2070 states and 7116 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:30:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:45,089 INFO L93 Difference]: Finished difference Result 2094 states and 7140 transitions. [2022-10-16 17:30:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:30:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-10-16 17:30:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:45,111 INFO L225 Difference]: With dead ends: 2094 [2022-10-16 17:30:45,111 INFO L226 Difference]: Without dead ends: 1771 [2022-10-16 17:30:45,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2022-10-16 17:30:45,116 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:45,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:30:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-10-16 17:30:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1771. [2022-10-16 17:30:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1348 states have (on average 1.056379821958457) internal successors, (1424), 1376 states have internal predecessors, (1424), 194 states have call successors, (194), 48 states have call predecessors, (194), 220 states have return successors, (5081), 346 states have call predecessors, (5081), 194 states have call successors, (5081) [2022-10-16 17:30:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 6699 transitions. [2022-10-16 17:30:45,521 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 6699 transitions. Word has length 110 [2022-10-16 17:30:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:45,522 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 6699 transitions. [2022-10-16 17:30:45,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:30:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 6699 transitions. [2022-10-16 17:30:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-10-16 17:30:45,537 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:45,538 INFO L195 NwaCegarLoop]: trace histogram [44, 39, 22, 22, 22, 21, 21, 21, 18, 18, 18, 18, 17, 17, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:45,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:45,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-10-16 17:30:45,751 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1650877166, now seen corresponding path program 7 times [2022-10-16 17:30:45,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693185203] [2022-10-16 17:30:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:30:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:30:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:30:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-10-16 17:30:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-10-16 17:30:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4794 backedges. 1451 proven. 612 refuted. 0 times theorem prover too weak. 2731 trivial. 0 not checked. [2022-10-16 17:30:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:47,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693185203] [2022-10-16 17:30:47,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693185203] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:47,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520346687] [2022-10-16 17:30:47,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:30:47,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:47,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:47,871 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:47,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-16 17:30:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:48,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 53 conjunts are in the unsatisfiable core [2022-10-16 17:30:48,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4794 backedges. 1451 proven. 612 refuted. 0 times theorem prover too weak. 2731 trivial. 0 not checked. [2022-10-16 17:30:48,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4794 backedges. 1607 proven. 518 refuted. 0 times theorem prover too weak. 2669 trivial. 0 not checked. [2022-10-16 17:30:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520346687] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:52,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:52,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 43 [2022-10-16 17:30:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511860406] [2022-10-16 17:30:52,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:52,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 17:30:52,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 17:30:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 17:30:52,856 INFO L87 Difference]: Start difference. First operand 1771 states and 6699 transitions. Second operand has 44 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (39), 31 states have call predecessors, (39), 9 states have call successors, (39) [2022-10-16 17:30:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:55,165 INFO L93 Difference]: Finished difference Result 3570 states and 14495 transitions. [2022-10-16 17:30:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-16 17:30:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (39), 31 states have call predecessors, (39), 9 states have call successors, (39) Word has length 356 [2022-10-16 17:30:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:55,306 INFO L225 Difference]: With dead ends: 3570 [2022-10-16 17:30:55,306 INFO L226 Difference]: Without dead ends: 3568 [2022-10-16 17:30:55,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 783 SyntacticMatches, 35 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5439 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1848, Invalid=7464, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 17:30:55,320 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 372 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:55,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 639 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:30:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-10-16 17:30:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 1502. [2022-10-16 17:30:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1131 states have (on average 1.0671971706454466) internal successors, (1207), 1159 states have internal predecessors, (1207), 175 states have call successors, (175), 48 states have call predecessors, (175), 187 states have return successors, (2933), 294 states have call predecessors, (2933), 175 states have call successors, (2933) [2022-10-16 17:30:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4315 transitions. [2022-10-16 17:30:56,383 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4315 transitions. Word has length 356 [2022-10-16 17:30:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:56,384 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 4315 transitions. [2022-10-16 17:30:56,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 9 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (39), 31 states have call predecessors, (39), 9 states have call successors, (39) [2022-10-16 17:30:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4315 transitions. [2022-10-16 17:30:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-10-16 17:30:56,392 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:56,393 INFO L195 NwaCegarLoop]: trace histogram [30, 28, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:56,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:56,607 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1085923251, now seen corresponding path program 8 times [2022-10-16 17:30:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:56,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121640316] [2022-10-16 17:30:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:30:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:30:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:30:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:30:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 286 proven. 720 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-10-16 17:30:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:58,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121640316] [2022-10-16 17:30:58,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121640316] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017669355] [2022-10-16 17:30:58,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:58,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:58,496 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:58,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-16 17:30:59,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:59,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:59,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:30:59,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 281 proven. 725 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-10-16 17:30:59,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 446 proven. 617 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2022-10-16 17:31:04,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017669355] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:04,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:04,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 24] total 45 [2022-10-16 17:31:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140152513] [2022-10-16 17:31:04,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:04,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 17:31:04,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 17:31:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=1593, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 17:31:04,045 INFO L87 Difference]: Start difference. First operand 1502 states and 4315 transitions. Second operand has 46 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 10 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (39), 33 states have call predecessors, (39), 10 states have call successors, (39) [2022-10-16 17:31:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:06,747 INFO L93 Difference]: Finished difference Result 3427 states and 10872 transitions. [2022-10-16 17:31:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 17:31:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 10 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (39), 33 states have call predecessors, (39), 10 states have call successors, (39) Word has length 265 [2022-10-16 17:31:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:06,815 INFO L225 Difference]: With dead ends: 3427 [2022-10-16 17:31:06,815 INFO L226 Difference]: Without dead ends: 3425 [2022-10-16 17:31:06,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 572 SyntacticMatches, 37 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6550 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2295, Invalid=9047, Unknown=0, NotChecked=0, Total=11342 [2022-10-16 17:31:06,828 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 522 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:06,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 639 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:31:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2022-10-16 17:31:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 1534. [2022-10-16 17:31:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1157 states have (on average 1.065687121866897) internal successors, (1233), 1185 states have internal predecessors, (1233), 177 states have call successors, (177), 48 states have call predecessors, (177), 191 states have return successors, (3150), 300 states have call predecessors, (3150), 177 states have call successors, (3150) [2022-10-16 17:31:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 4560 transitions. [2022-10-16 17:31:07,692 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 4560 transitions. Word has length 265 [2022-10-16 17:31:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:07,693 INFO L495 AbstractCegarLoop]: Abstraction has 1534 states and 4560 transitions. [2022-10-16 17:31:07,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 10 states have call successors, (20), 2 states have call predecessors, (20), 12 states have return successors, (39), 33 states have call predecessors, (39), 10 states have call successors, (39) [2022-10-16 17:31:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 4560 transitions. [2022-10-16 17:31:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-16 17:31:07,705 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:07,705 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 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 17:31:07,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:07,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:07,919 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:31:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash -972332549, now seen corresponding path program 2 times [2022-10-16 17:31:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:07,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840158990] [2022-10-16 17:31:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:31:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:31:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:31:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-16 17:31:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:31:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:31:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:31:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840158990] [2022-10-16 17:31:08,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840158990] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574686594] [2022-10-16 17:31:08,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:08,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:08,853 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:08,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-10-16 17:31:09,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:09,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:09,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 46 conjunts are in the unsatisfiable core [2022-10-16 17:31:09,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 7 proven. 65 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:31:09,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 7 proven. 88 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 17:31:11,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574686594] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:11,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:11,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 33] total 66 [2022-10-16 17:31:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402690499] [2022-10-16 17:31:11,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-16 17:31:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-16 17:31:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=4135, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:31:11,081 INFO L87 Difference]: Start difference. First operand 1534 states and 4560 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, (38), 10 states have call predecessors, (38), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) [2022-10-16 17:31:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:18,737 INFO L93 Difference]: Finished difference Result 2238 states and 5573 transitions. [2022-10-16 17:31:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-10-16 17:31:18,738 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, (38), 10 states have call predecessors, (38), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) Word has length 111 [2022-10-16 17:31:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:18,758 INFO L225 Difference]: With dead ends: 2238 [2022-10-16 17:31:18,759 INFO L226 Difference]: Without dead ends: 2237 [2022-10-16 17:31:18,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10122 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3490, Invalid=29452, Unknown=0, NotChecked=0, Total=32942 [2022-10-16 17:31:18,765 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 593 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 3599 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 4566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 3599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:18,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1948 Invalid, 4566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 3599 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-16 17:31:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-10-16 17:31:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 1718. [2022-10-16 17:31:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1285 states have (on average 1.0653696498054475) internal successors, (1369), 1321 states have internal predecessors, (1369), 209 states have call successors, (209), 52 states have call predecessors, (209), 215 states have return successors, (3252), 344 states have call predecessors, (3252), 209 states have call successors, (3252) [2022-10-16 17:31:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 4830 transitions. [2022-10-16 17:31:19,101 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 4830 transitions. Word has length 111 [2022-10-16 17:31:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:19,102 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 4830 transitions. [2022-10-16 17:31:19,102 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, (38), 10 states have call predecessors, (38), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) [2022-10-16 17:31:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 4830 transitions. [2022-10-16 17:31:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-10-16 17:31:19,113 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:19,114 INFO L195 NwaCegarLoop]: trace histogram [43, 40, 22, 21, 21, 21, 21, 21, 19, 19, 18, 18, 18, 18, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:19,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:19,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-10-16 17:31:19,328 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:31:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1653844908, now seen corresponding path program 8 times [2022-10-16 17:31:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:19,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612973591] [2022-10-16 17:31:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:31:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:31:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-16 17:31:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-10-16 17:31:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 17:31:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:31:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:31:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 1322 proven. 907 refuted. 0 times theorem prover too weak. 2589 trivial. 0 not checked. [2022-10-16 17:31:21,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:21,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612973591] [2022-10-16 17:31:21,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612973591] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:21,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436143599] [2022-10-16 17:31:21,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:21,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:21,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:21,818 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:21,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-10-16 17:31:22,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:22,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:22,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 17:31:22,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 1292 proven. 937 refuted. 0 times theorem prover too weak. 2589 trivial. 0 not checked. [2022-10-16 17:31:22,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 1508 proven. 788 refuted. 0 times theorem prover too weak. 2522 trivial. 0 not checked. [2022-10-16 17:31:28,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436143599] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:28,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:28,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 26] total 47 [2022-10-16 17:31:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291826158] [2022-10-16 17:31:28,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:31:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:31:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1741, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:31:28,259 INFO L87 Difference]: Start difference. First operand 1718 states and 4830 transitions. Second operand has 48 states, 47 states have (on average 3.4680851063829787) internal successors, (163), 47 states have internal predecessors, (163), 11 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (44), 35 states have call predecessors, (44), 11 states have call successors, (44) [2022-10-16 17:31:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:31,190 INFO L93 Difference]: Finished difference Result 3339 states and 9784 transitions. [2022-10-16 17:31:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-10-16 17:31:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.4680851063829787) internal successors, (163), 47 states have internal predecessors, (163), 11 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (44), 35 states have call predecessors, (44), 11 states have call successors, (44) Word has length 358 [2022-10-16 17:31:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:31,246 INFO L225 Difference]: With dead ends: 3339 [2022-10-16 17:31:31,246 INFO L226 Difference]: Without dead ends: 3337 [2022-10-16 17:31:31,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 797 SyntacticMatches, 46 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7827 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2612, Invalid=10270, Unknown=0, NotChecked=0, Total=12882 [2022-10-16 17:31:31,259 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 530 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:31,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 703 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 17:31:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2022-10-16 17:31:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2077. [2022-10-16 17:31:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1572 states have (on average 1.0534351145038168) internal successors, (1656), 1608 states have internal predecessors, (1656), 238 states have call successors, (238), 52 states have call predecessors, (238), 258 states have return successors, (6557), 416 states have call predecessors, (6557), 238 states have call successors, (6557) [2022-10-16 17:31:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 8451 transitions. [2022-10-16 17:31:32,132 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 8451 transitions. Word has length 358 [2022-10-16 17:31:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:32,133 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 8451 transitions. [2022-10-16 17:31:32,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.4680851063829787) internal successors, (163), 47 states have internal predecessors, (163), 11 states have call successors, (22), 2 states have call predecessors, (22), 12 states have return successors, (44), 35 states have call predecessors, (44), 11 states have call successors, (44) [2022-10-16 17:31:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 8451 transitions. [2022-10-16 17:31:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-10-16 17:31:32,151 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:32,153 INFO L195 NwaCegarLoop]: trace histogram [59, 54, 30, 30, 29, 28, 28, 28, 26, 26, 25, 25, 25, 25, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:32,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:32,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-10-16 17:31:32,369 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:31:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1790317551, now seen corresponding path program 9 times [2022-10-16 17:31:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:32,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455014731] [2022-10-16 17:31:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:32,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:31:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:31:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 17:31:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:31:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:31:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-10-16 17:31:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:31:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-10-16 17:31:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:31:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:31:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9046 backedges. 2854 proven. 1082 refuted. 0 times theorem prover too weak. 5110 trivial. 0 not checked. [2022-10-16 17:31:35,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:35,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455014731] [2022-10-16 17:31:35,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455014731] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:35,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573504379] [2022-10-16 17:31:35,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:31:35,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:35,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:35,816 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:35,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-10-16 17:31:36,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:31:36,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:36,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 63 conjunts are in the unsatisfiable core [2022-10-16 17:31:36,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:36,755 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 17:31:36,766 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 17:31:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9046 backedges. 265 proven. 8 refuted. 0 times theorem prover too weak. 8773 trivial. 0 not checked. [2022-10-16 17:31:36,849 INFO L328 TraceCheckSpWp]: Computing backward predicates...