/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 [2022-10-15 22:36:20,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 22:36:20,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 22:36:20,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 22:36:20,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 22:36:20,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 22:36:20,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 22:36:20,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 22:36:20,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 22:36:20,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 22:36:20,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 22:36:20,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 22:36:20,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 22:36:20,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 22:36:20,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 22:36:20,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 22:36:20,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 22:36:20,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 22:36:20,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 22:36:20,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 22:36:20,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 22:36:20,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 22:36:20,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 22:36:20,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 22:36:20,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 22:36:20,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 22:36:20,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 22:36:20,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 22:36:20,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 22:36:20,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 22:36:20,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 22:36:20,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 22:36:20,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 22:36:20,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 22:36:20,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 22:36:20,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 22:36:20,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 22:36:20,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 22:36:20,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 22:36:20,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 22:36:20,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 22:36:20,439 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 [2022-10-15 22:36:20,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 22:36:20,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 22:36:20,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 22:36:20,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 22:36:20,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 22:36:20,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 22:36:20,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 22:36:20,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 22:36:20,502 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 22:36:20,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 22:36:20,504 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 22:36:20,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 22:36:20,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 22:36:20,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 22:36:20,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 22:36:20,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 22:36:20,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 22:36:20,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 22:36:20,506 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 22:36:20,506 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 22:36:20,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 22:36:20,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 22:36:20,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 22:36:20,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 22:36:20,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 22:36:20,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 22:36:20,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 22:36:20,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 22:36:20,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 22:36:20,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 22:36:20,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 22:36:20,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 22:36:20,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 22:36:20,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 22:36:20,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 22:36:21,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 22:36:21,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 22:36:21,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 22:36:21,006 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 22:36:21,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2022-10-15 22:36:21,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed2f8fea/c39d742732ee4619b1aaf8e30c38405b/FLAGafb25bde8 [2022-10-15 22:36:21,777 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 22:36:21,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2022-10-15 22:36:21,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed2f8fea/c39d742732ee4619b1aaf8e30c38405b/FLAGafb25bde8 [2022-10-15 22:36:22,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed2f8fea/c39d742732ee4619b1aaf8e30c38405b [2022-10-15 22:36:22,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 22:36:22,103 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 22:36:22,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 22:36:22,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 22:36:22,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 22:36:22,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc3af6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22, skipping insertion in model container [2022-10-15 22:36:22,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 22:36:22,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 22:36:22,324 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] [2022-10-15 22:36:22,378 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-15 22:36:22,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 22:36:22,443 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 22:36:22,460 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] [2022-10-15 22:36:22,468 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-15 22:36:22,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 22:36:22,501 INFO L208 MainTranslator]: Completed translation [2022-10-15 22:36:22,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22 WrapperNode [2022-10-15 22:36:22,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 22:36:22,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 22:36:22,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 22:36:22,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 22:36:22,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,560 INFO L138 Inliner]: procedures = 29, calls = 61, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-10-15 22:36:22,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 22:36:22,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 22:36:22,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 22:36:22,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 22:36:22,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,605 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 22:36:22,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 22:36:22,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 22:36:22,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 22:36:22,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (1/1) ... [2022-10-15 22:36:22,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 22:36:22,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:22,657 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) [2022-10-15 22:36:22,680 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 [2022-10-15 22:36:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 22:36:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 22:36:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 22:36:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 22:36:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure min [2022-10-15 22:36:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2022-10-15 22:36:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 22:36:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-15 22:36:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-15 22:36:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 22:36:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2022-10-15 22:36:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2022-10-15 22:36:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 22:36:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 22:36:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure size [2022-10-15 22:36:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2022-10-15 22:36:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 22:36:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 22:36:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 22:36:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 22:36:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2022-10-15 22:36:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2022-10-15 22:36:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 22:36:22,895 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 22:36:22,902 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 22:36:23,524 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 22:36:23,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 22:36:23,553 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 22:36:23,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:36:23 BoogieIcfgContainer [2022-10-15 22:36:23,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 22:36:23,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 22:36:23,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 22:36:23,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 22:36:23,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:36:22" (1/3) ... [2022-10-15 22:36:23,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d7fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:36:23, skipping insertion in model container [2022-10-15 22:36:23,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:22" (2/3) ... [2022-10-15 22:36:23,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d7fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:36:23, skipping insertion in model container [2022-10-15 22:36:23,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:36:23" (3/3) ... [2022-10-15 22:36:23,569 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2022-10-15 22:36:23,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 22:36:23,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-15 22:36:23,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 22:36:23,678 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;@4f8cfd53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 22:36:23,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-15 22:36:23,684 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) [2022-10-15 22:36:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-15 22:36:23,698 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:23,699 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] [2022-10-15 22:36:23,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1165995000, now seen corresponding path program 1 times [2022-10-15 22:36:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:23,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169372921] [2022-10-15 22:36:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 22:36:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 22:36:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-15 22:36:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 22:36:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169372921] [2022-10-15 22:36:24,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169372921] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:24,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270396636] [2022-10-15 22:36:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:24,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:24,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:24,520 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) [2022-10-15 22:36:24,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 22:36:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 22:36:24,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 22:36:24,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 22:36:24,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270396636] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:24,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:24,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2022-10-15 22:36:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147737859] [2022-10-15 22:36:24,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:24,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 22:36:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:24,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 22:36:24,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-15 22:36:24,932 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) [2022-10-15 22:36:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:25,930 INFO L93 Difference]: Finished difference Result 258 states and 339 transitions. [2022-10-15 22:36:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 22:36:25,933 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 [2022-10-15 22:36:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:25,951 INFO L225 Difference]: With dead ends: 258 [2022-10-15 22:36:25,951 INFO L226 Difference]: Without dead ends: 168 [2022-10-15 22:36:25,959 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 [2022-10-15 22:36:25,965 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 146 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:25,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 642 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 22:36:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-10-15 22:36:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 131. [2022-10-15 22:36:26,037 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) [2022-10-15 22:36:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2022-10-15 22:36:26,042 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 29 [2022-10-15 22:36:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:26,043 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2022-10-15 22:36:26,043 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) [2022-10-15 22:36:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2022-10-15 22:36:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 22:36:26,047 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:26,047 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] [2022-10-15 22:36:26,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 22:36:26,260 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 [2022-10-15 22:36:26,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 670024807, now seen corresponding path program 1 times [2022-10-15 22:36:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461913219] [2022-10-15 22:36:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 22:36:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-15 22:36:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 22:36:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 22:36:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 22:36:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:26,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461913219] [2022-10-15 22:36:26,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461913219] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:26,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876484004] [2022-10-15 22:36:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:26,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:26,590 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) [2022-10-15 22:36:26,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 22:36:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 22:36:26,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 22:36:26,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 22:36:27,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876484004] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:27,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:27,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-10-15 22:36:27,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783990460] [2022-10-15 22:36:27,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:27,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-15 22:36:27,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-15 22:36:27,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-10-15 22:36:27,193 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) [2022-10-15 22:36:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:29,301 INFO L93 Difference]: Finished difference Result 300 states and 377 transitions. [2022-10-15 22:36:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-15 22:36:29,302 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 [2022-10-15 22:36:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:29,307 INFO L225 Difference]: With dead ends: 300 [2022-10-15 22:36:29,307 INFO L226 Difference]: Without dead ends: 243 [2022-10-15 22:36:29,309 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 [2022-10-15 22:36:29,311 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 [2022-10-15 22:36:29,312 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] [2022-10-15 22:36:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-10-15 22:36:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 171. [2022-10-15 22:36:29,343 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) [2022-10-15 22:36:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2022-10-15 22:36:29,346 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 39 [2022-10-15 22:36:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:29,347 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2022-10-15 22:36:29,347 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) [2022-10-15 22:36:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2022-10-15 22:36:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-15 22:36:29,350 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:29,350 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] [2022-10-15 22:36:29,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 22:36:29,562 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 [2022-10-15 22:36:29,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:29,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1126825100, now seen corresponding path program 1 times [2022-10-15 22:36:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:29,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178147700] [2022-10-15 22:36:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 22:36:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 22:36:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 22:36:29,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:29,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178147700] [2022-10-15 22:36:29,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178147700] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:29,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049131290] [2022-10-15 22:36:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:29,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:29,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:29,979 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) [2022-10-15 22:36:30,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 22:36:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:30,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 22:36:30,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 22:36:30,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 22:36:30,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049131290] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:30,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:30,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2022-10-15 22:36:30,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916084373] [2022-10-15 22:36:30,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:30,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 22:36:30,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 22:36:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-15 22:36:30,251 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) [2022-10-15 22:36:31,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:31,030 INFO L93 Difference]: Finished difference Result 327 states and 426 transitions. [2022-10-15 22:36:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 22:36:31,031 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 [2022-10-15 22:36:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:31,034 INFO L225 Difference]: With dead ends: 327 [2022-10-15 22:36:31,035 INFO L226 Difference]: Without dead ends: 208 [2022-10-15 22:36:31,037 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 [2022-10-15 22:36:31,038 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 [2022-10-15 22:36:31,039 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] [2022-10-15 22:36:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-10-15 22:36:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 173. [2022-10-15 22:36:31,069 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) [2022-10-15 22:36:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 224 transitions. [2022-10-15 22:36:31,072 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 224 transitions. Word has length 40 [2022-10-15 22:36:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:31,072 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 224 transitions. [2022-10-15 22:36:31,073 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) [2022-10-15 22:36:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 224 transitions. [2022-10-15 22:36:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-15 22:36:31,077 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:31,077 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] [2022-10-15 22:36:31,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:31,291 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 [2022-10-15 22:36:31,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 977908722, now seen corresponding path program 1 times [2022-10-15 22:36:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:31,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658957035] [2022-10-15 22:36:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 22:36:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-15 22:36:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658957035] [2022-10-15 22:36:31,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658957035] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:31,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:31,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 22:36:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532637239] [2022-10-15 22:36:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:31,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 22:36:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 22:36:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 22:36:31,618 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) [2022-10-15 22:36:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:31,904 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-10-15 22:36:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 22:36:31,905 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 [2022-10-15 22:36:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:31,912 INFO L225 Difference]: With dead ends: 190 [2022-10-15 22:36:31,912 INFO L226 Difference]: Without dead ends: 189 [2022-10-15 22:36:31,913 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 [2022-10-15 22:36:31,917 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 [2022-10-15 22:36:31,919 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] [2022-10-15 22:36:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-15 22:36:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2022-10-15 22:36:31,985 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) [2022-10-15 22:36:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2022-10-15 22:36:31,988 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 57 [2022-10-15 22:36:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:31,990 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2022-10-15 22:36:31,990 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) [2022-10-15 22:36:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2022-10-15 22:36:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-15 22:36:32,003 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:32,003 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] [2022-10-15 22:36:32,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 22:36:32,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting tree_inorderErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1274314751, now seen corresponding path program 1 times [2022-10-15 22:36:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:32,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758539916] [2022-10-15 22:36:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 22:36:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 22:36:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 22:36:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 22:36:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:32,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758539916] [2022-10-15 22:36:32,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758539916] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:32,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802929272] [2022-10-15 22:36:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:32,513 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) [2022-10-15 22:36:32,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 22:36:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:32,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 22:36:32,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 22:36:32,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 22:36:32,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802929272] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:32,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 22:36:32,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [15] total 16 [2022-10-15 22:36:32,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604655974] [2022-10-15 22:36:32,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 22:36:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 22:36:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-15 22:36:32,682 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) [2022-10-15 22:36:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:32,698 INFO L93 Difference]: Finished difference Result 177 states and 228 transitions. [2022-10-15 22:36:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 22:36:32,699 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 [2022-10-15 22:36:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:32,702 INFO L225 Difference]: With dead ends: 177 [2022-10-15 22:36:32,702 INFO L226 Difference]: Without dead ends: 176 [2022-10-15 22:36:32,702 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 [2022-10-15 22:36:32,704 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 [2022-10-15 22:36:32,704 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] [2022-10-15 22:36:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-10-15 22:36:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-10-15 22:36:32,720 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) [2022-10-15 22:36:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 224 transitions. [2022-10-15 22:36:32,722 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 224 transitions. Word has length 60 [2022-10-15 22:36:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:32,723 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 224 transitions. [2022-10-15 22:36:32,723 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) [2022-10-15 22:36:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 224 transitions. [2022-10-15 22:36:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-15 22:36:32,725 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:32,726 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] [2022-10-15 22:36:32,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:32,940 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 [2022-10-15 22:36:32,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 133716566, now seen corresponding path program 1 times [2022-10-15 22:36:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:32,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952690351] [2022-10-15 22:36:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 22:36:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 22:36:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-15 22:36:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-15 22:36:33,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:33,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952690351] [2022-10-15 22:36:33,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952690351] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:33,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975912350] [2022-10-15 22:36:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:33,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:33,266 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) [2022-10-15 22:36:33,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 22:36:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:33,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 22:36:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-15 22:36:33,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-15 22:36:33,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975912350] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:33,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:33,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 15 [2022-10-15 22:36:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458124727] [2022-10-15 22:36:33,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:33,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 22:36:33,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 22:36:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-10-15 22:36:33,681 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) [2022-10-15 22:36:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:34,213 INFO L93 Difference]: Finished difference Result 216 states and 284 transitions. [2022-10-15 22:36:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 22:36:34,214 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 [2022-10-15 22:36:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:34,217 INFO L225 Difference]: With dead ends: 216 [2022-10-15 22:36:34,217 INFO L226 Difference]: Without dead ends: 214 [2022-10-15 22:36:34,218 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 [2022-10-15 22:36:34,219 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 [2022-10-15 22:36:34,219 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] [2022-10-15 22:36:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-10-15 22:36:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2022-10-15 22:36:34,237 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) [2022-10-15 22:36:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2022-10-15 22:36:34,239 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 79 [2022-10-15 22:36:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:34,240 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2022-10-15 22:36:34,240 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) [2022-10-15 22:36:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2022-10-15 22:36:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-15 22:36:34,242 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:34,242 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] [2022-10-15 22:36:34,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:34,456 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 [2022-10-15 22:36:34,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -201654479, now seen corresponding path program 1 times [2022-10-15 22:36:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872074478] [2022-10-15 22:36:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:34,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-15 22:36:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-15 22:36:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-15 22:36:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:34,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872074478] [2022-10-15 22:36:34,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872074478] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:34,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:34,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 22:36:34,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022165447] [2022-10-15 22:36:34,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:34,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 22:36:34,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 22:36:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 22:36:34,653 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) [2022-10-15 22:36:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:34,891 INFO L93 Difference]: Finished difference Result 214 states and 281 transitions. [2022-10-15 22:36:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 22:36:34,892 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 [2022-10-15 22:36:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:34,894 INFO L225 Difference]: With dead ends: 214 [2022-10-15 22:36:34,895 INFO L226 Difference]: Without dead ends: 213 [2022-10-15 22:36:34,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 22:36:34,896 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 [2022-10-15 22:36:34,896 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] [2022-10-15 22:36:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-10-15 22:36:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 197. [2022-10-15 22:36:34,913 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) [2022-10-15 22:36:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 259 transitions. [2022-10-15 22:36:34,915 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 259 transitions. Word has length 81 [2022-10-15 22:36:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:34,916 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 259 transitions. [2022-10-15 22:36:34,916 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) [2022-10-15 22:36:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 259 transitions. [2022-10-15 22:36:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-15 22:36:34,918 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:34,918 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] [2022-10-15 22:36:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 22:36:34,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash 338020150, now seen corresponding path program 1 times [2022-10-15 22:36:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004096070] [2022-10-15 22:36:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 22:36:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 22:36:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 22:36:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 22:36:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 22:36:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:35,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004096070] [2022-10-15 22:36:35,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004096070] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:35,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964309085] [2022-10-15 22:36:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:35,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:35,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:35,480 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) [2022-10-15 22:36:35,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 22:36:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-15 22:36:35,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-15 22:36:35,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:36,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964309085] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:36,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:36,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2022-10-15 22:36:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112755908] [2022-10-15 22:36:36,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:36,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-15 22:36:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:36,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-15 22:36:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2022-10-15 22:36:36,771 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) [2022-10-15 22:36:38,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:38,656 INFO L93 Difference]: Finished difference Result 357 states and 467 transitions. [2022-10-15 22:36:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-15 22:36:38,657 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 [2022-10-15 22:36:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:38,659 INFO L225 Difference]: With dead ends: 357 [2022-10-15 22:36:38,659 INFO L226 Difference]: Without dead ends: 195 [2022-10-15 22:36:38,663 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 [2022-10-15 22:36:38,663 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 364 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:38,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 2357 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 22:36:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-10-15 22:36:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 161. [2022-10-15 22:36:38,695 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) [2022-10-15 22:36:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2022-10-15 22:36:38,697 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 76 [2022-10-15 22:36:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:38,699 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2022-10-15 22:36:38,699 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) [2022-10-15 22:36:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2022-10-15 22:36:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-15 22:36:38,704 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:38,704 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] [2022-10-15 22:36:38,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:38,918 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 [2022-10-15 22:36:38,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:38,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1201138505, now seen corresponding path program 1 times [2022-10-15 22:36:38,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:38,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538523221] [2022-10-15 22:36:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:38,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 22:36:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-15 22:36:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 22:36:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 22:36:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 22:36:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 22:36:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 22:36:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-15 22:36:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 22:36:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 22:36:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:39,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538523221] [2022-10-15 22:36:39,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538523221] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:39,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:39,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 22:36:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048404481] [2022-10-15 22:36:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 22:36:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 22:36:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-15 22:36:39,092 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) [2022-10-15 22:36:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:39,353 INFO L93 Difference]: Finished difference Result 190 states and 246 transitions. [2022-10-15 22:36:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 22:36:39,354 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 [2022-10-15 22:36:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:39,356 INFO L225 Difference]: With dead ends: 190 [2022-10-15 22:36:39,356 INFO L226 Difference]: Without dead ends: 188 [2022-10-15 22:36:39,357 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 [2022-10-15 22:36:39,358 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 [2022-10-15 22:36:39,358 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] [2022-10-15 22:36:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-15 22:36:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2022-10-15 22:36:39,372 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) [2022-10-15 22:36:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 218 transitions. [2022-10-15 22:36:39,375 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 218 transitions. Word has length 65 [2022-10-15 22:36:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:39,375 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 218 transitions. [2022-10-15 22:36:39,376 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) [2022-10-15 22:36:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 218 transitions. [2022-10-15 22:36:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 22:36:39,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:39,378 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] [2022-10-15 22:36:39,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 22:36:39,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 216924694, now seen corresponding path program 1 times [2022-10-15 22:36:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:39,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030831406] [2022-10-15 22:36:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 22:36:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-15 22:36:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 22:36:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 22:36:39,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:39,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030831406] [2022-10-15 22:36:39,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030831406] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:39,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676167237] [2022-10-15 22:36:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:39,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:39,837 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) [2022-10-15 22:36:39,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 22:36:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:39,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 22:36:39,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 22:36:40,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 22:36:40,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676167237] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:40,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:40,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 33 [2022-10-15 22:36:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352599932] [2022-10-15 22:36:40,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:40,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 22:36:40,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 22:36:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 22:36:40,484 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) [2022-10-15 22:36:42,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:42,330 INFO L93 Difference]: Finished difference Result 318 states and 424 transitions. [2022-10-15 22:36:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-15 22:36:42,333 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 [2022-10-15 22:36:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:42,336 INFO L225 Difference]: With dead ends: 318 [2022-10-15 22:36:42,337 INFO L226 Difference]: Without dead ends: 317 [2022-10-15 22:36:42,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=407, Invalid=3253, Unknown=0, NotChecked=0, Total=3660 [2022-10-15 22:36:42,340 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 [2022-10-15 22:36:42,340 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] [2022-10-15 22:36:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-10-15 22:36:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 219. [2022-10-15 22:36:42,362 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) [2022-10-15 22:36:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 293 transitions. [2022-10-15 22:36:42,365 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 293 transitions. Word has length 75 [2022-10-15 22:36:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:42,365 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 293 transitions. [2022-10-15 22:36:42,366 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) [2022-10-15 22:36:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 293 transitions. [2022-10-15 22:36:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 22:36:42,368 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:42,368 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] [2022-10-15 22:36:42,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:42,581 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 [2022-10-15 22:36:42,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 724222493, now seen corresponding path program 1 times [2022-10-15 22:36:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:42,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066231220] [2022-10-15 22:36:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 22:36:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-15 22:36:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 22:36:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 22:36:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 22:36:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 22:36:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 22:36:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-15 22:36:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 22:36:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 22:36:42,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:42,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066231220] [2022-10-15 22:36:42,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066231220] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:42,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597715096] [2022-10-15 22:36:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:42,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:42,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:42,846 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) [2022-10-15 22:36:42,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 22:36:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:42,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 22:36:43,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 22:36:43,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 22:36:43,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597715096] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:43,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:43,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 31 [2022-10-15 22:36:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237173390] [2022-10-15 22:36:43,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:43,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 22:36:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 22:36:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-10-15 22:36:43,420 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) [2022-10-15 22:36:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:44,865 INFO L93 Difference]: Finished difference Result 275 states and 366 transitions. [2022-10-15 22:36:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-15 22:36:44,866 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 [2022-10-15 22:36:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:44,868 INFO L225 Difference]: With dead ends: 275 [2022-10-15 22:36:44,868 INFO L226 Difference]: Without dead ends: 274 [2022-10-15 22:36:44,870 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 [2022-10-15 22:36:44,871 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 [2022-10-15 22:36:44,871 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] [2022-10-15 22:36:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-15 22:36:44,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 249. [2022-10-15 22:36:44,893 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) [2022-10-15 22:36:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 332 transitions. [2022-10-15 22:36:44,897 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 332 transitions. Word has length 68 [2022-10-15 22:36:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:44,897 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 332 transitions. [2022-10-15 22:36:44,898 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) [2022-10-15 22:36:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 332 transitions. [2022-10-15 22:36:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-15 22:36:44,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:44,900 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] [2022-10-15 22:36:44,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:45,113 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 [2022-10-15 22:36:45,113 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -976826576, now seen corresponding path program 1 times [2022-10-15 22:36:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:45,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763985300] [2022-10-15 22:36:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-15 22:36:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-15 22:36:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-15 22:36:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 48 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-10-15 22:36:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:45,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763985300] [2022-10-15 22:36:45,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763985300] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:45,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871691264] [2022-10-15 22:36:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:45,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:45,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:45,781 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) [2022-10-15 22:36:45,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 22:36:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:45,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 22:36:45,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 48 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-10-15 22:36:46,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-10-15 22:36:46,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871691264] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:46,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:46,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 14] total 23 [2022-10-15 22:36:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049314089] [2022-10-15 22:36:46,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 22:36:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 22:36:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2022-10-15 22:36:46,650 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) [2022-10-15 22:36:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:47,675 INFO L93 Difference]: Finished difference Result 335 states and 460 transitions. [2022-10-15 22:36:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-15 22:36:47,676 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 [2022-10-15 22:36:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:47,680 INFO L225 Difference]: With dead ends: 335 [2022-10-15 22:36:47,680 INFO L226 Difference]: Without dead ends: 333 [2022-10-15 22:36:47,682 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 [2022-10-15 22:36:47,683 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 [2022-10-15 22:36:47,683 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] [2022-10-15 22:36:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-10-15 22:36:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 269. [2022-10-15 22:36:47,708 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) [2022-10-15 22:36:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 379 transitions. [2022-10-15 22:36:47,712 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 379 transitions. Word has length 112 [2022-10-15 22:36:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:47,713 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 379 transitions. [2022-10-15 22:36:47,714 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) [2022-10-15 22:36:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 379 transitions. [2022-10-15 22:36:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-15 22:36:47,718 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:47,718 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] [2022-10-15 22:36:47,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-15 22:36:47,932 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 [2022-10-15 22:36:47,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1900752173, now seen corresponding path program 2 times [2022-10-15 22:36:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:47,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722169771] [2022-10-15 22:36:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 22:36:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 22:36:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-15 22:36:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-15 22:36:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-10-15 22:36:48,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722169771] [2022-10-15 22:36:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722169771] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62481119] [2022-10-15 22:36:48,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 22:36:48,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:48,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:48,495 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) [2022-10-15 22:36:48,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 22:36:48,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 22:36:48,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:36:48,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 22:36:48,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 51 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-10-15 22:36:48,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 51 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-10-15 22:36:49,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62481119] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:49,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:49,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18 [2022-10-15 22:36:49,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136640794] [2022-10-15 22:36:49,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:49,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 22:36:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 22:36:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-10-15 22:36:49,013 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) [2022-10-15 22:36:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:49,766 INFO L93 Difference]: Finished difference Result 312 states and 456 transitions. [2022-10-15 22:36:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 22:36:49,768 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 [2022-10-15 22:36:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:49,771 INFO L225 Difference]: With dead ends: 312 [2022-10-15 22:36:49,771 INFO L226 Difference]: Without dead ends: 311 [2022-10-15 22:36:49,772 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 [2022-10-15 22:36:49,773 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 [2022-10-15 22:36:49,774 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] [2022-10-15 22:36:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-10-15 22:36:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 260. [2022-10-15 22:36:49,803 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) [2022-10-15 22:36:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 367 transitions. [2022-10-15 22:36:49,806 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 367 transitions. Word has length 110 [2022-10-15 22:36:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:49,808 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 367 transitions. [2022-10-15 22:36:49,808 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) [2022-10-15 22:36:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 367 transitions. [2022-10-15 22:36:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-15 22:36:49,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:49,811 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] [2022-10-15 22:36:49,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:50,024 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 [2022-10-15 22:36:50,025 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2008655864, now seen corresponding path program 2 times [2022-10-15 22:36:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:50,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105054893] [2022-10-15 22:36:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 22:36:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 22:36:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 14 proven. 93 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-15 22:36:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105054893] [2022-10-15 22:36:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105054893] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930444388] [2022-10-15 22:36:50,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 22:36:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:50,886 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) [2022-10-15 22:36:50,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 22:36:51,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 22:36:51,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:36:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-15 22:36:51,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 14 proven. 93 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-15 22:36:51,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 57 proven. 73 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-10-15 22:36:52,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930444388] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:52,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:52,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 27 [2022-10-15 22:36:52,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705400234] [2022-10-15 22:36:52,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-15 22:36:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-15 22:36:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-10-15 22:36:52,137 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) [2022-10-15 22:36:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:53,169 INFO L93 Difference]: Finished difference Result 368 states and 556 transitions. [2022-10-15 22:36:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-15 22:36:53,170 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 [2022-10-15 22:36:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:53,174 INFO L225 Difference]: With dead ends: 368 [2022-10-15 22:36:53,175 INFO L226 Difference]: Without dead ends: 366 [2022-10-15 22:36:53,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 250 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=532, Invalid=2120, Unknown=0, NotChecked=0, Total=2652 [2022-10-15 22:36:53,177 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 [2022-10-15 22:36:53,178 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] [2022-10-15 22:36:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-10-15 22:36:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 258. [2022-10-15 22:36:53,205 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) [2022-10-15 22:36:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 358 transitions. [2022-10-15 22:36:53,208 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 358 transitions. Word has length 118 [2022-10-15 22:36:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:53,211 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 358 transitions. [2022-10-15 22:36:53,211 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) [2022-10-15 22:36:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 358 transitions. [2022-10-15 22:36:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-15 22:36:53,213 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:53,213 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] [2022-10-15 22:36:53,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:53,428 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 [2022-10-15 22:36:53,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1761969484, now seen corresponding path program 1 times [2022-10-15 22:36:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:53,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669052654] [2022-10-15 22:36:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 22:36:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-15 22:36:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 22:36:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 22:36:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 22:36:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 22:36:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 22:36:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-15 22:36:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 22:36:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-15 22:36:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 22:36:53,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:53,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669052654] [2022-10-15 22:36:53,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669052654] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:53,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:53,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-15 22:36:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79716982] [2022-10-15 22:36:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 22:36:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 22:36:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-15 22:36:53,607 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) [2022-10-15 22:36:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:53,867 INFO L93 Difference]: Finished difference Result 285 states and 393 transitions. [2022-10-15 22:36:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 22:36:53,868 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 [2022-10-15 22:36:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:53,871 INFO L225 Difference]: With dead ends: 285 [2022-10-15 22:36:53,871 INFO L226 Difference]: Without dead ends: 263 [2022-10-15 22:36:53,873 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 [2022-10-15 22:36:53,874 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 [2022-10-15 22:36:53,875 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] [2022-10-15 22:36:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-10-15 22:36:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 255. [2022-10-15 22:36:53,894 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) [2022-10-15 22:36:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 353 transitions. [2022-10-15 22:36:53,898 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 353 transitions. Word has length 74 [2022-10-15 22:36:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:53,898 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 353 transitions. [2022-10-15 22:36:53,898 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) [2022-10-15 22:36:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 353 transitions. [2022-10-15 22:36:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-15 22:36:53,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:53,901 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] [2022-10-15 22:36:53,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-15 22:36:53,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1407746804, now seen corresponding path program 2 times [2022-10-15 22:36:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:53,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438721374] [2022-10-15 22:36:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:53,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:36:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:36:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:36:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 22:36:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 22:36:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-15 22:36:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 52 proven. 155 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-10-15 22:36:55,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:55,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438721374] [2022-10-15 22:36:55,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438721374] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:55,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585412641] [2022-10-15 22:36:55,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 22:36:55,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:55,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:55,111 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) [2022-10-15 22:36:55,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 22:36:55,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 22:36:55,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:36:55,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-15 22:36:55,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 52 proven. 155 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-10-15 22:36:55,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 100 proven. 136 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-10-15 22:36:56,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585412641] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:56,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:56,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 16] total 27 [2022-10-15 22:36:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240244594] [2022-10-15 22:36:56,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:56,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-15 22:36:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-15 22:36:56,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-10-15 22:36:56,835 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) [2022-10-15 22:36:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:58,070 INFO L93 Difference]: Finished difference Result 432 states and 643 transitions. [2022-10-15 22:36:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 22:36:58,071 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 [2022-10-15 22:36:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:58,077 INFO L225 Difference]: With dead ends: 432 [2022-10-15 22:36:58,077 INFO L226 Difference]: Without dead ends: 430 [2022-10-15 22:36:58,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 319 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=659, Invalid=2533, Unknown=0, NotChecked=0, Total=3192 [2022-10-15 22:36:58,080 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 247 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:58,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 701 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 22:36:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-10-15 22:36:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 305. [2022-10-15 22:36:58,118 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) [2022-10-15 22:36:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 497 transitions. [2022-10-15 22:36:58,124 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 497 transitions. Word has length 148 [2022-10-15 22:36:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:58,124 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 497 transitions. [2022-10-15 22:36:58,125 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) [2022-10-15 22:36:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 497 transitions. [2022-10-15 22:36:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-15 22:36:58,128 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:58,128 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] [2022-10-15 22:36:58,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-10-15 22:36:58,343 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 [2022-10-15 22:36:58,343 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:36:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash -863706774, now seen corresponding path program 1 times [2022-10-15 22:36:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:58,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77228601] [2022-10-15 22:36:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 22:36:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-15 22:36:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 22:36:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 22:36:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 22:36:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 22:36:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 22:36:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-15 22:36:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-15 22:36:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 22:36:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 22:36:59,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:59,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77228601] [2022-10-15 22:36:59,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77228601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:59,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535361106] [2022-10-15 22:36:59,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:59,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:59,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:59,028 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) [2022-10-15 22:36:59,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 22:36:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:59,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-15 22:36:59,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 22:36:59,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:37:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 22:37:00,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535361106] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:37:00,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:37:00,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 46 [2022-10-15 22:37:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223359593] [2022-10-15 22:37:00,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:37:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-15 22:37:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:37:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-15 22:37:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2002, Unknown=0, NotChecked=0, Total=2162 [2022-10-15 22:37:00,179 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) [2022-10-15 22:37:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:37:02,847 INFO L93 Difference]: Finished difference Result 377 states and 609 transitions. [2022-10-15 22:37:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-10-15 22:37:02,847 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 [2022-10-15 22:37:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:37:02,853 INFO L225 Difference]: With dead ends: 377 [2022-10-15 22:37:02,853 INFO L226 Difference]: Without dead ends: 376 [2022-10-15 22:37:02,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=817, Invalid=6493, Unknown=0, NotChecked=0, Total=7310 [2022-10-15 22:37:02,859 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, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 22:37:02,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1948 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 22:37:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-10-15 22:37:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 347. [2022-10-15 22:37:02,903 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) [2022-10-15 22:37:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 558 transitions. [2022-10-15 22:37:02,908 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 558 transitions. Word has length 85 [2022-10-15 22:37:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:37:02,908 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 558 transitions. [2022-10-15 22:37:02,909 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) [2022-10-15 22:37:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 558 transitions. [2022-10-15 22:37:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-15 22:37:02,913 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:37:02,913 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] [2022-10-15 22:37:02,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 22:37:03,128 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 [2022-10-15 22:37:03,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:37:03,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:37:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash 907926961, now seen corresponding path program 1 times [2022-10-15 22:37:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:37:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251812312] [2022-10-15 22:37:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:37:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:37:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:37:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:37:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:37:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 22:37:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-15 22:37:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 22:37:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 22:37:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 22:37:03,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:37:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251812312] [2022-10-15 22:37:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251812312] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:37:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206322879] [2022-10-15 22:37:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:37:03,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:37:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:37:03,882 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) [2022-10-15 22:37:03,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 22:37:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:04,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-15 22:37:04,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:37:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 22:37:04,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:37:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-15 22:37:05,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206322879] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:37:05,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:37:05,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 46 [2022-10-15 22:37:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452045287] [2022-10-15 22:37:05,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:37:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-15 22:37:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:37:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-15 22:37:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2022-10-15 22:37:05,184 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) [2022-10-15 22:37:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:37:08,501 INFO L93 Difference]: Finished difference Result 542 states and 830 transitions. [2022-10-15 22:37:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-15 22:37:08,502 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 [2022-10-15 22:37:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:37:08,507 INFO L225 Difference]: With dead ends: 542 [2022-10-15 22:37:08,508 INFO L226 Difference]: Without dead ends: 541 [2022-10-15 22:37:08,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=821, Invalid=7735, Unknown=0, NotChecked=0, Total=8556 [2022-10-15 22:37:08,512 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 208 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-15 22:37:08,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1739 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-15 22:37:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-10-15 22:37:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 387. [2022-10-15 22:37:08,546 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) [2022-10-15 22:37:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 613 transitions. [2022-10-15 22:37:08,551 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 613 transitions. Word has length 89 [2022-10-15 22:37:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:37:08,551 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 613 transitions. [2022-10-15 22:37:08,551 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) [2022-10-15 22:37:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 613 transitions. [2022-10-15 22:37:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-10-15 22:37:08,555 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:37:08,555 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] [2022-10-15 22:37:08,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-15 22:37:08,768 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 [2022-10-15 22:37:08,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-15 22:37:08,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:37:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash 342652206, now seen corresponding path program 3 times [2022-10-15 22:37:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:37:08,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905261627] [2022-10-15 22:37:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:37:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:37:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 22:37:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 22:37:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 22:37:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 22:37:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 22:37:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:37:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:37:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:37:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 35 proven. 188 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-10-15 22:37:09,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:37:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905261627] [2022-10-15 22:37:09,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905261627] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:37:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762624261] [2022-10-15 22:37:09,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 22:37:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:37:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:37:09,801 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) [2022-10-15 22:37:09,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 22:37:10,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-15 22:37:10,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:37:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 71 conjunts are in the unsatisfiable core [2022-10-15 22:37:10,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:37:10,113 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 [2022-10-15 22:37:10,118 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 [2022-10-15 22:37:10,191 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 [2022-10-15 22:37:10,197 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 [2022-10-15 22:37:10,504 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 [2022-10-15 22:37:10,509 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 [2022-10-15 22:37:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 293 proven. 25 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-10-15 22:37:10,618 INFO L328 TraceCheckSpWp]: Computing backward predicates...