/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:28:15,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:28:15,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:28:15,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:28:15,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:28:15,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:28:15,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:28:15,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:28:15,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:28:15,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:28:15,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:28:15,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:28:15,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:28:15,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:28:15,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:28:15,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:28:15,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:28:15,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:28:15,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:28:15,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:28:15,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:28:15,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:28:15,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:28:15,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:28:15,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:28:15,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:28:15,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:28:15,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:28:15,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:28:15,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:28:15,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:28:15,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:28:15,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:28:15,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:28:15,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:28:15,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:28:15,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:28:15,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:28:15,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:28:15,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:28:15,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:28:15,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:28:15,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:28:15,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:28:15,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:28:15,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:28:15,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:28:15,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:28:15,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:28:15,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:28:15,536 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:28:15,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:28:15,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:28:15,537 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:28:15,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:28:15,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:28:15,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:28:15,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:28:15,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:28:15,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:28:15,539 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:28:15,539 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:28:15,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:28:15,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:28:15,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:28:15,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:28:15,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:28:15,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:28:15,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:15,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:28:15,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:28:15,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:28:15,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:28:15,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:28:15,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:28:15,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:28:15,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:28:15,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:28:15,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:28:15,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:28:15,947 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:28:15,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_rec.c [2022-10-16 17:28:16,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c7d7000/e86bafd58b6648d49481bfba478a0479/FLAG095157776 [2022-10-16 17:28:16,754 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:28:16,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec.c [2022-10-16 17:28:16,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c7d7000/e86bafd58b6648d49481bfba478a0479/FLAG095157776 [2022-10-16 17:28:16,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c7d7000/e86bafd58b6648d49481bfba478a0479 [2022-10-16 17:28:16,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:28:16,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:28:16,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:16,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:28:16,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:28:16,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:16" (1/1) ... [2022-10-16 17:28:16,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f5875f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:16, skipping insertion in model container [2022-10-16 17:28:16,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:16" (1/1) ... [2022-10-16 17:28:16,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:28:16,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:28:17,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec.c[585,598] [2022-10-16 17:28:17,050 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:17,052 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:17,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:17,084 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:28:17,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec.c[585,598] [2022-10-16 17:28:17,114 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:17,121 WARN L1550 CHandler]: Possible shadowing of function min [2022-10-16 17:28:17,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:17,175 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:28:17,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17 WrapperNode [2022-10-16 17:28:17,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:17,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:17,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:28:17,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:28:17,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,265 INFO L138 Inliner]: procedures = 29, calls = 61, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-10-16 17:28:17,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:17,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:28:17,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:28:17,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:28:17,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:28:17,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:28:17,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:28:17,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:28:17,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (1/1) ... [2022-10-16 17:28:17,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:17,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:17,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 17:28:17,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 17:28:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:28:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 17:28:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 17:28:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2022-10-16 17:28:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2022-10-16 17:28:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:28:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure min [2022-10-16 17:28:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2022-10-16 17:28:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:28:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 17:28:17,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 17:28:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 17:28:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2022-10-16 17:28:17,490 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2022-10-16 17:28:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:28:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:28:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure size [2022-10-16 17:28:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2022-10-16 17:28:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:28:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:28:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-16 17:28:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-16 17:28:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2022-10-16 17:28:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2022-10-16 17:28:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:28:17,606 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:28:17,609 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:28:18,115 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:28:18,126 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:28:18,127 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 17:28:18,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:18 BoogieIcfgContainer [2022-10-16 17:28:18,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:28:18,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:28:18,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:28:18,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:28:18,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:28:16" (1/3) ... [2022-10-16 17:28:18,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2461050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:18, skipping insertion in model container [2022-10-16 17:28:18,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:17" (2/3) ... [2022-10-16 17:28:18,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2461050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:18, skipping insertion in model container [2022-10-16 17:28:18,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:18" (3/3) ... [2022-10-16 17:28:18,142 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2022-10-16 17:28:18,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:28:18,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:28:18,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:28:18,256 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;@79450846, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:28:18,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:28:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 66 states have (on average 1.378787878787879) internal successors, (91), 78 states have internal predecessors, (91), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-16 17:28:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 17:28:18,281 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:18,282 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:18,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:18,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:18,290 INFO L85 PathProgramCache]: Analyzing trace with hash -236761056, now seen corresponding path program 1 times [2022-10-16 17:28:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:18,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297732354] [2022-10-16 17:28:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:18,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 17:28:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:28:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:28:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:19,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297732354] [2022-10-16 17:28:19,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297732354] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655708178] [2022-10-16 17:28:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:19,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:19,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:28:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:19,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:19,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655708178] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:19,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:19,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2022-10-16 17:28:19,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012465676] [2022-10-16 17:28:19,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:19,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:28:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:28:19,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:28:19,591 INFO L87 Difference]: Start difference. First operand has 108 states, 66 states have (on average 1.378787878787879) internal successors, (91), 78 states have internal predecessors, (91), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:28:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:20,671 INFO L93 Difference]: Finished difference Result 265 states and 349 transitions. [2022-10-16 17:28:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:28:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32 [2022-10-16 17:28:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:20,691 INFO L225 Difference]: With dead ends: 265 [2022-10-16 17:28:20,691 INFO L226 Difference]: Without dead ends: 169 [2022-10-16 17:28:20,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:28:20,701 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 136 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:20,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 713 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:28:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-10-16 17:28:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2022-10-16 17:28:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 79 states have (on average 1.240506329113924) internal successors, (98), 91 states have internal predecessors, (98), 31 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (39), 32 states have call predecessors, (39), 31 states have call successors, (39) [2022-10-16 17:28:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2022-10-16 17:28:20,775 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 32 [2022-10-16 17:28:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:20,776 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2022-10-16 17:28:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:28:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2022-10-16 17:28:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:28:20,779 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:20,780 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:20,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 17:28:20,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 17:28:20,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1290738301, now seen corresponding path program 1 times [2022-10-16 17:28:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:20,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898974033] [2022-10-16 17:28:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:28:21,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898974033] [2022-10-16 17:28:21,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898974033] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499304802] [2022-10-16 17:28:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:21,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:21,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:21,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:28:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:21,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:28:21,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:28:21,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:28:22,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499304802] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:22,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:22,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-10-16 17:28:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955169918] [2022-10-16 17:28:22,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:22,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:22,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:22,028 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 17 states have internal predecessors, (58), 7 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:28:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:24,368 INFO L93 Difference]: Finished difference Result 305 states and 381 transitions. [2022-10-16 17:28:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:28:24,368 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 17 states have internal predecessors, (58), 7 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) Word has length 39 [2022-10-16 17:28:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:24,373 INFO L225 Difference]: With dead ends: 305 [2022-10-16 17:28:24,373 INFO L226 Difference]: Without dead ends: 245 [2022-10-16 17:28:24,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=447, Invalid=3213, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:28:24,378 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 342 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:24,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1210 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:28:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-10-16 17:28:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 180. [2022-10-16 17:28:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 125 states have internal predecessors, (138), 40 states have call successors, (40), 12 states have call predecessors, (40), 16 states have return successors, (52), 42 states have call predecessors, (52), 40 states have call successors, (52) [2022-10-16 17:28:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 230 transitions. [2022-10-16 17:28:24,414 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 230 transitions. Word has length 39 [2022-10-16 17:28:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:24,414 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 230 transitions. [2022-10-16 17:28:24,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 17 states have internal predecessors, (58), 7 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:28:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 230 transitions. [2022-10-16 17:28:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 17:28:24,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:24,418 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:24,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-16 17:28:24,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash 854818954, now seen corresponding path program 1 times [2022-10-16 17:28:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:24,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074989060] [2022-10-16 17:28:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:28:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:28:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 17:28:24,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:24,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074989060] [2022-10-16 17:28:24,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074989060] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:24,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383612596] [2022-10-16 17:28:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:24,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:24,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:24,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:28:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:25,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:25,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 17:28:25,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 17:28:25,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383612596] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:25,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:25,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2022-10-16 17:28:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198525878] [2022-10-16 17:28:25,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:28:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:28:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:25,188 INFO L87 Difference]: Start difference. First operand 180 states and 230 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:28:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:25,944 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2022-10-16 17:28:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:28:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 43 [2022-10-16 17:28:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:25,948 INFO L225 Difference]: With dead ends: 335 [2022-10-16 17:28:25,949 INFO L226 Difference]: Without dead ends: 213 [2022-10-16 17:28:25,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:28:25,953 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 122 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:25,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1135 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:28:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-10-16 17:28:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 182. [2022-10-16 17:28:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 114 states have (on average 1.219298245614035) internal successors, (139), 127 states have internal predecessors, (139), 40 states have call successors, (40), 12 states have call predecessors, (40), 17 states have return successors, (55), 42 states have call predecessors, (55), 40 states have call successors, (55) [2022-10-16 17:28:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 234 transitions. [2022-10-16 17:28:25,984 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 234 transitions. Word has length 43 [2022-10-16 17:28:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:25,985 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 234 transitions. [2022-10-16 17:28:25,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-16 17:28:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 234 transitions. [2022-10-16 17:28:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 17:28:25,988 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:25,988 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:26,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:26,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:26,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash -315227184, now seen corresponding path program 1 times [2022-10-16 17:28:26,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:26,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365770334] [2022-10-16 17:28:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 17:28:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:26,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365770334] [2022-10-16 17:28:26,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365770334] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:26,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:26,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922734884] [2022-10-16 17:28:26,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:26,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:26,449 INFO L87 Difference]: Start difference. First operand 182 states and 234 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:26,742 INFO L93 Difference]: Finished difference Result 199 states and 257 transitions. [2022-10-16 17:28:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-10-16 17:28:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:26,746 INFO L225 Difference]: With dead ends: 199 [2022-10-16 17:28:26,746 INFO L226 Difference]: Without dead ends: 198 [2022-10-16 17:28:26,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:26,748 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 54 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:26,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 255 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-10-16 17:28:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 186. [2022-10-16 17:28:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 130 states have internal predecessors, (143), 40 states have call successors, (40), 12 states have call predecessors, (40), 17 states have return successors, (55), 43 states have call predecessors, (55), 40 states have call successors, (55) [2022-10-16 17:28:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 238 transitions. [2022-10-16 17:28:26,777 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 238 transitions. Word has length 54 [2022-10-16 17:28:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:26,778 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 238 transitions. [2022-10-16 17:28:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 238 transitions. [2022-10-16 17:28:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 17:28:26,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:26,782 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:26,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:28:26,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting tree_inorderErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash 839251399, now seen corresponding path program 1 times [2022-10-16 17:28:26,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:26,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245149400] [2022-10-16 17:28:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:28:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 17:28:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:27,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245149400] [2022-10-16 17:28:27,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245149400] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:27,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631570662] [2022-10-16 17:28:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:27,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:27,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:27,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:28:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:27,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:27,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:28:27,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:28:27,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631570662] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:27,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:28:27,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [15] total 16 [2022-10-16 17:28:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526631540] [2022-10-16 17:28:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:27,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:28:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:28:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:27,619 INFO L87 Difference]: Start difference. First operand 186 states and 238 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:28:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:27,647 INFO L93 Difference]: Finished difference Result 186 states and 238 transitions. [2022-10-16 17:28:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:28:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2022-10-16 17:28:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:27,653 INFO L225 Difference]: With dead ends: 186 [2022-10-16 17:28:27,653 INFO L226 Difference]: Without dead ends: 185 [2022-10-16 17:28:27,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:27,657 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:27,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 237 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:28:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-10-16 17:28:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-10-16 17:28:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 129 states have internal predecessors, (139), 40 states have call successors, (40), 12 states have call predecessors, (40), 17 states have return successors, (55), 43 states have call predecessors, (55), 40 states have call successors, (55) [2022-10-16 17:28:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 234 transitions. [2022-10-16 17:28:27,713 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 234 transitions. Word has length 60 [2022-10-16 17:28:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:27,717 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 234 transitions. [2022-10-16 17:28:27,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:28:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 234 transitions. [2022-10-16 17:28:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 17:28:27,726 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:27,726 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:27,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:27,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:27,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:27,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:27,942 INFO L85 PathProgramCache]: Analyzing trace with hash -955465297, now seen corresponding path program 1 times [2022-10-16 17:28:27,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:27,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632565386] [2022-10-16 17:28:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:27,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-10-16 17:28:28,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:28,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632565386] [2022-10-16 17:28:28,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632565386] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:28,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093284945] [2022-10-16 17:28:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:28,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:28,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:28,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:28:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:28,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:28:28,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-10-16 17:28:28,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-10-16 17:28:28,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093284945] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:28,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:28,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 15 [2022-10-16 17:28:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533084899] [2022-10-16 17:28:28,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:28,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:28:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:28:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:28,758 INFO L87 Difference]: Start difference. First operand 185 states and 234 transitions. Second operand has 16 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (15), 10 states have call predecessors, (15), 4 states have call successors, (15) [2022-10-16 17:28:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:29,362 INFO L93 Difference]: Finished difference Result 225 states and 294 transitions. [2022-10-16 17:28:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:28:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (15), 10 states have call predecessors, (15), 4 states have call successors, (15) Word has length 73 [2022-10-16 17:28:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:29,366 INFO L225 Difference]: With dead ends: 225 [2022-10-16 17:28:29,366 INFO L226 Difference]: Without dead ends: 223 [2022-10-16 17:28:29,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:29,368 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 81 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:29,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 562 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:28:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-10-16 17:28:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 204. [2022-10-16 17:28:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 134 states have (on average 1.164179104477612) internal successors, (156), 144 states have internal predecessors, (156), 41 states have call successors, (41), 12 states have call predecessors, (41), 19 states have return successors, (69), 47 states have call predecessors, (69), 41 states have call successors, (69) [2022-10-16 17:28:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2022-10-16 17:28:29,392 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 73 [2022-10-16 17:28:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:29,393 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2022-10-16 17:28:29,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (15), 10 states have call predecessors, (15), 4 states have call successors, (15) [2022-10-16 17:28:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2022-10-16 17:28:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 17:28:29,396 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:29,396 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:29,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:29,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash 449862933, now seen corresponding path program 1 times [2022-10-16 17:28:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:29,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714497348] [2022-10-16 17:28:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:28:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-10-16 17:28:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714497348] [2022-10-16 17:28:29,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714497348] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:29,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:29,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286595388] [2022-10-16 17:28:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:29,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:29,791 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 17:28:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:30,065 INFO L93 Difference]: Finished difference Result 223 states and 291 transitions. [2022-10-16 17:28:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:30,066 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 78 [2022-10-16 17:28:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:30,071 INFO L225 Difference]: With dead ends: 223 [2022-10-16 17:28:30,071 INFO L226 Difference]: Without dead ends: 222 [2022-10-16 17:28:30,072 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 [2022-10-16 17:28:30,073 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 56 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:30,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 313 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-10-16 17:28:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 206. [2022-10-16 17:28:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 145 states have internal predecessors, (159), 41 states have call successors, (41), 12 states have call predecessors, (41), 19 states have return successors, (69), 48 states have call predecessors, (69), 41 states have call successors, (69) [2022-10-16 17:28:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2022-10-16 17:28:30,100 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 78 [2022-10-16 17:28:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:30,101 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2022-10-16 17:28:30,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-16 17:28:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2022-10-16 17:28:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 17:28:30,105 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:30,105 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:30,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:28:30,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1484728712, now seen corresponding path program 1 times [2022-10-16 17:28:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318168673] [2022-10-16 17:28:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:30,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-16 17:28:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 17:28:30,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:30,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318168673] [2022-10-16 17:28:30,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318168673] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:30,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525530709] [2022-10-16 17:28:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:30,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:30,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:30,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:30,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:28:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:28:30,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 17:28:31,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:28:32,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525530709] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:32,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:32,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2022-10-16 17:28:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465265483] [2022-10-16 17:28:32,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:32,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:28:32,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:28:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:28:32,152 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) [2022-10-16 17:28:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:34,416 INFO L93 Difference]: Finished difference Result 370 states and 477 transitions. [2022-10-16 17:28:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:28:34,416 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) Word has length 76 [2022-10-16 17:28:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:34,419 INFO L225 Difference]: With dead ends: 370 [2022-10-16 17:28:34,419 INFO L226 Difference]: Without dead ends: 200 [2022-10-16 17:28:34,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=334, Invalid=3956, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 17:28:34,423 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 288 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:34,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2539 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:28:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-10-16 17:28:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 170. [2022-10-16 17:28:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 119 states have internal predecessors, (130), 34 states have call successors, (34), 10 states have call predecessors, (34), 15 states have return successors, (55), 40 states have call predecessors, (55), 34 states have call successors, (55) [2022-10-16 17:28:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 219 transitions. [2022-10-16 17:28:34,440 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 219 transitions. Word has length 76 [2022-10-16 17:28:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:34,440 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 219 transitions. [2022-10-16 17:28:34,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 31 states have internal predecessors, (93), 15 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (27), 17 states have call predecessors, (27), 15 states have call successors, (27) [2022-10-16 17:28:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 219 transitions. [2022-10-16 17:28:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 17:28:34,442 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:34,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:34,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:34,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:34,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash -84577176, now seen corresponding path program 1 times [2022-10-16 17:28:34,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:34,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271166315] [2022-10-16 17:28:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 17:28:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 17:28:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:28:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:34,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:34,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271166315] [2022-10-16 17:28:34,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271166315] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:34,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:34,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-16 17:28:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136131987] [2022-10-16 17:28:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:34,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 17:28:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 17:28:34,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:34,835 INFO L87 Difference]: Start difference. First operand 170 states and 219 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:28:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:35,124 INFO L93 Difference]: Finished difference Result 195 states and 249 transitions. [2022-10-16 17:28:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:35,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2022-10-16 17:28:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:35,127 INFO L225 Difference]: With dead ends: 195 [2022-10-16 17:28:35,127 INFO L226 Difference]: Without dead ends: 193 [2022-10-16 17:28:35,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:28:35,128 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 52 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:35,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 364 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:28:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-10-16 17:28:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 173. [2022-10-16 17:28:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 121 states have internal predecessors, (133), 34 states have call successors, (34), 10 states have call predecessors, (34), 15 states have return successors, (55), 41 states have call predecessors, (55), 34 states have call successors, (55) [2022-10-16 17:28:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2022-10-16 17:28:35,144 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 68 [2022-10-16 17:28:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:35,145 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2022-10-16 17:28:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 17:28:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2022-10-16 17:28:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 17:28:35,147 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:35,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:28:35,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash 8022572, now seen corresponding path program 1 times [2022-10-16 17:28:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564399256] [2022-10-16 17:28:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:28:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:28:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:35,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564399256] [2022-10-16 17:28:35,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564399256] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:35,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608222914] [2022-10-16 17:28:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:35,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:35,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:35,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:28:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:28:35,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-16 17:28:35,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 17:28:36,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608222914] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:36,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:36,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 33 [2022-10-16 17:28:36,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307078841] [2022-10-16 17:28:36,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:36,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 17:28:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 17:28:36,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 17:28:36,273 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:28:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:38,217 INFO L93 Difference]: Finished difference Result 317 states and 419 transitions. [2022-10-16 17:28:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 17:28:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) Word has length 75 [2022-10-16 17:28:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:38,220 INFO L225 Difference]: With dead ends: 317 [2022-10-16 17:28:38,221 INFO L226 Difference]: Without dead ends: 316 [2022-10-16 17:28:38,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=407, Invalid=3253, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:28:38,224 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 164 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:38,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1346 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:28:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-10-16 17:28:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 224. [2022-10-16 17:28:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 150 states have (on average 1.1533333333333333) internal successors, (173), 158 states have internal predecessors, (173), 44 states have call successors, (44), 12 states have call predecessors, (44), 20 states have return successors, (80), 53 states have call predecessors, (80), 44 states have call successors, (80) [2022-10-16 17:28:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 297 transitions. [2022-10-16 17:28:38,247 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 297 transitions. Word has length 75 [2022-10-16 17:28:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:38,247 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 297 transitions. [2022-10-16 17:28:38,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.242424242424242) internal successors, (74), 25 states have internal predecessors, (74), 8 states have call successors, (22), 6 states have call predecessors, (22), 9 states have return successors, (19), 13 states have call predecessors, (19), 8 states have call successors, (19) [2022-10-16 17:28:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 297 transitions. [2022-10-16 17:28:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 17:28:38,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:38,250 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:38,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:38,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:38,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 749308587, now seen corresponding path program 1 times [2022-10-16 17:28:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:38,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357917250] [2022-10-16 17:28:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:38,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-10-16 17:28:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357917250] [2022-10-16 17:28:39,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357917250] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251201550] [2022-10-16 17:28:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:39,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:39,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:39,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:39,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:28:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:28:39,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-10-16 17:28:39,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-10-16 17:28:39,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251201550] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:39,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:39,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 23 [2022-10-16 17:28:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749955832] [2022-10-16 17:28:39,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:28:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:28:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:28:39,798 INFO L87 Difference]: Start difference. First operand 224 states and 297 transitions. Second operand has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 6 states have call successors, (16), 2 states have call predecessors, (16), 7 states have return successors, (21), 16 states have call predecessors, (21), 6 states have call successors, (21) [2022-10-16 17:28:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:40,851 INFO L93 Difference]: Finished difference Result 309 states and 422 transitions. [2022-10-16 17:28:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:28:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 6 states have call successors, (16), 2 states have call predecessors, (16), 7 states have return successors, (21), 16 states have call predecessors, (21), 6 states have call successors, (21) Word has length 100 [2022-10-16 17:28:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:40,858 INFO L225 Difference]: With dead ends: 309 [2022-10-16 17:28:40,858 INFO L226 Difference]: Without dead ends: 307 [2022-10-16 17:28:40,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 213 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=501, Invalid=1949, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:28:40,860 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 185 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:40,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 624 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-10-16 17:28:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 244. [2022-10-16 17:28:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 166 states have (on average 1.144578313253012) internal successors, (190), 173 states have internal predecessors, (190), 46 states have call successors, (46), 12 states have call predecessors, (46), 22 states have return successors, (108), 58 states have call predecessors, (108), 46 states have call successors, (108) [2022-10-16 17:28:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 344 transitions. [2022-10-16 17:28:40,889 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 344 transitions. Word has length 100 [2022-10-16 17:28:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:40,890 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 344 transitions. [2022-10-16 17:28:40,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 6 states have call successors, (16), 2 states have call predecessors, (16), 7 states have return successors, (21), 16 states have call predecessors, (21), 6 states have call successors, (21) [2022-10-16 17:28:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 344 transitions. [2022-10-16 17:28:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 17:28:40,892 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:40,893 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 5, 4, 4, 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] [2022-10-16 17:28:40,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:41,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 17:28:41,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash 258769752, now seen corresponding path program 2 times [2022-10-16 17:28:41,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:41,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936345919] [2022-10-16 17:28:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:28:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:28:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-10-16 17:28:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:41,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936345919] [2022-10-16 17:28:41,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936345919] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608752228] [2022-10-16 17:28:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:41,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:41,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:28:41,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:41,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:41,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:28:41,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-10-16 17:28:41,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-10-16 17:28:42,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608752228] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:42,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:42,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2022-10-16 17:28:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443384555] [2022-10-16 17:28:42,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:42,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 17:28:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 17:28:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-10-16 17:28:42,044 INFO L87 Difference]: Start difference. First operand 244 states and 344 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-16 17:28:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:42,650 INFO L93 Difference]: Finished difference Result 266 states and 372 transitions. [2022-10-16 17:28:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:28:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) Word has length 94 [2022-10-16 17:28:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:42,653 INFO L225 Difference]: With dead ends: 266 [2022-10-16 17:28:42,654 INFO L226 Difference]: Without dead ends: 265 [2022-10-16 17:28:42,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:28:42,655 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 88 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:42,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 496 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:28:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-10-16 17:28:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 235. [2022-10-16 17:28:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 158 states have (on average 1.1265822784810127) internal successors, (178), 167 states have internal predecessors, (178), 46 states have call successors, (46), 12 states have call predecessors, (46), 22 states have return successors, (108), 55 states have call predecessors, (108), 46 states have call successors, (108) [2022-10-16 17:28:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 332 transitions. [2022-10-16 17:28:42,678 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 332 transitions. Word has length 94 [2022-10-16 17:28:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:42,679 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 332 transitions. [2022-10-16 17:28:42,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) [2022-10-16 17:28:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 332 transitions. [2022-10-16 17:28:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 17:28:42,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:42,682 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:42,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-16 17:28:42,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:42,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -907938132, now seen corresponding path program 2 times [2022-10-16 17:28:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587022644] [2022-10-16 17:28:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:28:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 93 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-10-16 17:28:43,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587022644] [2022-10-16 17:28:43,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587022644] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987228436] [2022-10-16 17:28:43,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:43,710 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:43,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:28:43,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:43,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:43,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 17:28:43,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 93 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-10-16 17:28:44,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 57 proven. 73 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-10-16 17:28:44,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987228436] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:44,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:44,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 27 [2022-10-16 17:28:44,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701338674] [2022-10-16 17:28:44,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:44,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:44,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:44,893 INFO L87 Difference]: Start difference. First operand 235 states and 332 transitions. Second operand has 28 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:28:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:45,872 INFO L93 Difference]: Finished difference Result 342 states and 518 transitions. [2022-10-16 17:28:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:28:45,873 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 121 [2022-10-16 17:28:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:45,877 INFO L225 Difference]: With dead ends: 342 [2022-10-16 17:28:45,877 INFO L226 Difference]: Without dead ends: 340 [2022-10-16 17:28:45,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 256 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=532, Invalid=2120, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:28:45,879 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 220 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:45,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 554 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-10-16 17:28:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 233. [2022-10-16 17:28:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 157 states have (on average 1.127388535031847) internal successors, (177), 166 states have internal predecessors, (177), 45 states have call successors, (45), 12 states have call predecessors, (45), 22 states have return successors, (101), 54 states have call predecessors, (101), 45 states have call successors, (101) [2022-10-16 17:28:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 323 transitions. [2022-10-16 17:28:45,908 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 323 transitions. Word has length 121 [2022-10-16 17:28:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:45,908 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 323 transitions. [2022-10-16 17:28:45,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:28:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 323 transitions. [2022-10-16 17:28:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 17:28:45,911 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:45,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:45,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:46,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:28:46,125 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2071613961, now seen corresponding path program 1 times [2022-10-16 17:28:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:46,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075926998] [2022-10-16 17:28:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:28:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:28:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 17:28:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:28:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:28:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 17:28:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:28:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 17:28:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:28:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 17:28:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 17:28:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:28:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:46,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075926998] [2022-10-16 17:28:46,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075926998] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:46,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:46,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 17:28:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157434063] [2022-10-16 17:28:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:46,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:28:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:28:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:28:46,320 INFO L87 Difference]: Start difference. First operand 233 states and 323 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 17:28:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:46,636 INFO L93 Difference]: Finished difference Result 259 states and 355 transitions. [2022-10-16 17:28:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:28:46,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2022-10-16 17:28:46,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:46,639 INFO L225 Difference]: With dead ends: 259 [2022-10-16 17:28:46,640 INFO L226 Difference]: Without dead ends: 203 [2022-10-16 17:28:46,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:28:46,641 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:46,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 343 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:28:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-10-16 17:28:46,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2022-10-16 17:28:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 133 states have (on average 1.150375939849624) internal successors, (153), 143 states have internal predecessors, (153), 35 states have call successors, (35), 9 states have call predecessors, (35), 19 states have return successors, (90), 43 states have call predecessors, (90), 35 states have call successors, (90) [2022-10-16 17:28:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 278 transitions. [2022-10-16 17:28:46,661 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 278 transitions. Word has length 77 [2022-10-16 17:28:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:46,662 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 278 transitions. [2022-10-16 17:28:46,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 17:28:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 278 transitions. [2022-10-16 17:28:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-16 17:28:46,666 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:46,666 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:46,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-16 17:28:46,667 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1378152269, now seen corresponding path program 2 times [2022-10-16 17:28:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:46,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247586208] [2022-10-16 17:28:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:28:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 17:28:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:28:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 31 proven. 121 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-10-16 17:28:47,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:47,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247586208] [2022-10-16 17:28:47,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247586208] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:47,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393866570] [2022-10-16 17:28:47,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:47,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:47,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:47,560 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:47,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:28:47,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:47,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:47,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 17:28:47,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 31 proven. 121 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-10-16 17:28:47,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 75 proven. 104 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-10-16 17:28:48,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393866570] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:48,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 16] total 27 [2022-10-16 17:28:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421769145] [2022-10-16 17:28:48,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:48,928 INFO L87 Difference]: Start difference. First operand 196 states and 278 transitions. Second operand has 28 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:28:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:49,983 INFO L93 Difference]: Finished difference Result 374 states and 628 transitions. [2022-10-16 17:28:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 17:28:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 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 135 [2022-10-16 17:28:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:49,989 INFO L225 Difference]: With dead ends: 374 [2022-10-16 17:28:49,990 INFO L226 Difference]: Without dead ends: 372 [2022-10-16 17:28:49,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 289 SyntacticMatches, 14 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=2052, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 17:28:49,994 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 173 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 688 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:28:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-10-16 17:28:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 266. [2022-10-16 17:28:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 188 states have (on average 1.1063829787234043) internal successors, (208), 198 states have internal predecessors, (208), 42 states have call successors, (42), 9 states have call predecessors, (42), 27 states have return successors, (259), 58 states have call predecessors, (259), 42 states have call successors, (259) [2022-10-16 17:28:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 509 transitions. [2022-10-16 17:28:50,036 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 509 transitions. Word has length 135 [2022-10-16 17:28:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:50,038 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 509 transitions. [2022-10-16 17:28:50,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 6 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (24), 19 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:28:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 509 transitions. [2022-10-16 17:28:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-16 17:28:50,041 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:50,042 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:50,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:50,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:28:50,255 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1610561463, now seen corresponding path program 1 times [2022-10-16 17:28:50,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:50,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075275823] [2022-10-16 17:28:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:50,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:28:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:28:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:28:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:28:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:28:51,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:51,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075275823] [2022-10-16 17:28:51,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075275823] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:51,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538372737] [2022-10-16 17:28:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:51,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:51,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:51,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:51,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:28:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:51,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 17:28:51,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:28:51,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 17:28:52,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538372737] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:52,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:52,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 46 [2022-10-16 17:28:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598585492] [2022-10-16 17:28:52,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:52,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:28:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:28:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:28:52,172 INFO L87 Difference]: Start difference. First operand 266 states and 509 transitions. Second operand has 47 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (28), 6 states have call predecessors, (28), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) [2022-10-16 17:28:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:55,118 INFO L93 Difference]: Finished difference Result 448 states and 770 transitions. [2022-10-16 17:28:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 17:28:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (28), 6 states have call predecessors, (28), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) Word has length 89 [2022-10-16 17:28:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:55,125 INFO L225 Difference]: With dead ends: 448 [2022-10-16 17:28:55,125 INFO L226 Difference]: Without dead ends: 447 [2022-10-16 17:28:55,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=821, Invalid=7735, Unknown=0, NotChecked=0, Total=8556 [2022-10-16 17:28:55,130 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 395 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:55,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1235 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 17:28:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-10-16 17:28:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 308. [2022-10-16 17:28:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 218 states have (on average 1.1009174311926606) internal successors, (240), 228 states have internal predecessors, (240), 47 states have call successors, (47), 10 states have call predecessors, (47), 34 states have return successors, (284), 69 states have call predecessors, (284), 47 states have call successors, (284) [2022-10-16 17:28:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 571 transitions. [2022-10-16 17:28:55,171 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 571 transitions. Word has length 89 [2022-10-16 17:28:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:55,171 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 571 transitions. [2022-10-16 17:28:55,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (28), 6 states have call predecessors, (28), 12 states have return successors, (24), 18 states have call predecessors, (24), 13 states have call successors, (24) [2022-10-16 17:28:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 571 transitions. [2022-10-16 17:28:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-10-16 17:28:55,175 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:55,176 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:55,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:28:55,390 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:28:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -626303619, now seen corresponding path program 3 times [2022-10-16 17:28:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:55,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654770935] [2022-10-16 17:28:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:28:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:28:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:28:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 17:28:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-16 17:28:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:28:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:28:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:28:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 302 proven. 178 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2022-10-16 17:28:56,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:56,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654770935] [2022-10-16 17:28:56,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654770935] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:56,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245916715] [2022-10-16 17:28:56,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:28:56,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:56,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:56,562 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:28:56,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:28:56,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:28:56,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:56,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 71 conjunts are in the unsatisfiable core [2022-10-16 17:28:56,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:56,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:28:56,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:28:56,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 17:28:56,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 17:28:57,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:28:57,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:28:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 456 proven. 25 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2022-10-16 17:28:57,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 74 proven. 203 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2022-10-16 17:28:58,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245916715] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:58,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:58,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 38 [2022-10-16 17:28:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792633591] [2022-10-16 17:28:58,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:58,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-16 17:28:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-16 17:28:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:28:58,165 INFO L87 Difference]: Start difference. First operand 308 states and 571 transitions. Second operand has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 31 states have internal predecessors, (109), 13 states have call successors, (30), 8 states have call predecessors, (30), 13 states have return successors, (33), 20 states have call predecessors, (33), 13 states have call successors, (33) [2022-10-16 17:29:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:01,630 INFO L93 Difference]: Finished difference Result 828 states and 1462 transitions. [2022-10-16 17:29:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-16 17:29:01,631 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 31 states have internal predecessors, (109), 13 states have call successors, (30), 8 states have call predecessors, (30), 13 states have return successors, (33), 20 states have call predecessors, (33), 13 states have call successors, (33) Word has length 191 [2022-10-16 17:29:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:01,639 INFO L225 Difference]: With dead ends: 828 [2022-10-16 17:29:01,639 INFO L226 Difference]: Without dead ends: 599 [2022-10-16 17:29:01,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 428 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=768, Invalid=4488, Unknown=0, NotChecked=0, Total=5256 [2022-10-16 17:29:01,648 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 483 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:01,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1721 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2432 Invalid, 0 Unknown, 308 Unchecked, 1.7s Time] [2022-10-16 17:29:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-10-16 17:29:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 391. [2022-10-16 17:29:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 283 states have (on average 1.0918727915194346) internal successors, (309), 292 states have internal predecessors, (309), 55 states have call successors, (55), 13 states have call predecessors, (55), 44 states have return successors, (397), 85 states have call predecessors, (397), 55 states have call successors, (397) [2022-10-16 17:29:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 761 transitions. [2022-10-16 17:29:01,719 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 761 transitions. Word has length 191 [2022-10-16 17:29:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:01,720 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 761 transitions. [2022-10-16 17:29:01,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 31 states have internal predecessors, (109), 13 states have call successors, (30), 8 states have call predecessors, (30), 13 states have return successors, (33), 20 states have call predecessors, (33), 13 states have call successors, (33) [2022-10-16 17:29:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 761 transitions. [2022-10-16 17:29:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-10-16 17:29:01,726 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:01,726 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:01,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:01,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:29:01,941 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1561937997, now seen corresponding path program 4 times [2022-10-16 17:29:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419474479] [2022-10-16 17:29:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 17:29:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 17:29:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 35 proven. 188 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-10-16 17:29:03,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:03,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419474479] [2022-10-16 17:29:03,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419474479] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48174733] [2022-10-16 17:29:03,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:03,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:03,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:03,293 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:03,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:29:03,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:03,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:03,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:29:03,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 35 proven. 188 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-10-16 17:29:03,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 90 proven. 164 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-10-16 17:29:05,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48174733] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:05,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 17] total 31 [2022-10-16 17:29:05,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286911747] [2022-10-16 17:29:05,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:29:05,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:29:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:29:05,272 INFO L87 Difference]: Start difference. First operand 391 states and 761 transitions. Second operand has 32 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 6 states have call successors, (16), 2 states have call predecessors, (16), 9 states have return successors, (27), 22 states have call predecessors, (27), 6 states have call successors, (27) [2022-10-16 17:29:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:06,323 INFO L93 Difference]: Finished difference Result 585 states and 1162 transitions. [2022-10-16 17:29:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:29:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 6 states have call successors, (16), 2 states have call predecessors, (16), 9 states have return successors, (27), 22 states have call predecessors, (27), 6 states have call successors, (27) Word has length 160 [2022-10-16 17:29:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:06,333 INFO L225 Difference]: With dead ends: 585 [2022-10-16 17:29:06,333 INFO L226 Difference]: Without dead ends: 583 [2022-10-16 17:29:06,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 344 SyntacticMatches, 17 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:29:06,337 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 220 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:06,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 379 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:29:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-10-16 17:29:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 323. [2022-10-16 17:29:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 229 states have (on average 1.1135371179039302) internal successors, (255), 238 states have internal predecessors, (255), 49 states have call successors, (49), 13 states have call predecessors, (49), 36 states have return successors, (195), 71 states have call predecessors, (195), 49 states have call successors, (195) [2022-10-16 17:29:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 499 transitions. [2022-10-16 17:29:06,405 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 499 transitions. Word has length 160 [2022-10-16 17:29:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:06,406 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 499 transitions. [2022-10-16 17:29:06,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 6 states have call successors, (16), 2 states have call predecessors, (16), 9 states have return successors, (27), 22 states have call predecessors, (27), 6 states have call successors, (27) [2022-10-16 17:29:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 499 transitions. [2022-10-16 17:29:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-10-16 17:29:06,410 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:06,411 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:06,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:06,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:06,624 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1267650834, now seen corresponding path program 3 times [2022-10-16 17:29:06,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:06,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250525073] [2022-10-16 17:29:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 17:29:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 17:29:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 72 proven. 226 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-10-16 17:29:07,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:07,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250525073] [2022-10-16 17:29:07,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250525073] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384279878] [2022-10-16 17:29:07,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:07,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:07,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:07,936 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:07,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 17:29:08,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 17:29:08,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:08,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:29:08,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:08,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:29:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2022-10-16 17:29:08,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 38 proven. 56 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-10-16 17:29:08,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384279878] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:08,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:08,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 34 [2022-10-16 17:29:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926949290] [2022-10-16 17:29:08,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:08,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 17:29:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:08,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 17:29:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 17:29:08,983 INFO L87 Difference]: Start difference. First operand 323 states and 499 transitions. Second operand has 34 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 11 states have call successors, (28), 4 states have call predecessors, (28), 14 states have return successors, (31), 18 states have call predecessors, (31), 11 states have call successors, (31) [2022-10-16 17:29:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:10,584 INFO L93 Difference]: Finished difference Result 799 states and 1232 transitions. [2022-10-16 17:29:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:29:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 11 states have call successors, (28), 4 states have call predecessors, (28), 14 states have return successors, (31), 18 states have call predecessors, (31), 11 states have call successors, (31) Word has length 174 [2022-10-16 17:29:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:10,591 INFO L225 Difference]: With dead ends: 799 [2022-10-16 17:29:10,592 INFO L226 Difference]: Without dead ends: 555 [2022-10-16 17:29:10,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=397, Invalid=3635, Unknown=0, NotChecked=0, Total=4032 [2022-10-16 17:29:10,598 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 220 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:10,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1363 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1076 Invalid, 0 Unknown, 413 Unchecked, 0.8s Time] [2022-10-16 17:29:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-10-16 17:29:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 365. [2022-10-16 17:29:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.1149425287356323) internal successors, (291), 271 states have internal predecessors, (291), 52 states have call successors, (52), 14 states have call predecessors, (52), 43 states have return successors, (244), 79 states have call predecessors, (244), 52 states have call successors, (244) [2022-10-16 17:29:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 587 transitions. [2022-10-16 17:29:10,684 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 587 transitions. Word has length 174 [2022-10-16 17:29:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:10,684 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 587 transitions. [2022-10-16 17:29:10,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 11 states have call successors, (28), 4 states have call predecessors, (28), 14 states have return successors, (31), 18 states have call predecessors, (31), 11 states have call successors, (31) [2022-10-16 17:29:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 587 transitions. [2022-10-16 17:29:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-10-16 17:29:10,691 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:10,691 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:10,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:10,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:10,905 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:10,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 104115544, now seen corresponding path program 4 times [2022-10-16 17:29:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:10,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491217804] [2022-10-16 17:29:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:10,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 17:29:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 17:29:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 92 proven. 233 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-10-16 17:29:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491217804] [2022-10-16 17:29:12,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491217804] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094539260] [2022-10-16 17:29:12,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:29:12,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:12,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:12,201 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:12,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:29:12,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:29:12,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:12,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 17:29:12,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 92 proven. 233 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-10-16 17:29:12,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 180 proven. 194 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2022-10-16 17:29:14,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094539260] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:14,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:14,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 18] total 29 [2022-10-16 17:29:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848778292] [2022-10-16 17:29:14,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-16 17:29:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-16 17:29:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-10-16 17:29:14,473 INFO L87 Difference]: Start difference. First operand 365 states and 587 transitions. Second operand has 30 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 6 states have call successors, (17), 2 states have call predecessors, (17), 9 states have return successors, (26), 20 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-16 17:29:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:15,646 INFO L93 Difference]: Finished difference Result 647 states and 1170 transitions. [2022-10-16 17:29:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-16 17:29:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 6 states have call successors, (17), 2 states have call predecessors, (17), 9 states have return successors, (26), 20 states have call predecessors, (26), 6 states have call successors, (26) Word has length 173 [2022-10-16 17:29:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:15,655 INFO L225 Difference]: With dead ends: 647 [2022-10-16 17:29:15,655 INFO L226 Difference]: Without dead ends: 645 [2022-10-16 17:29:15,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 383 SyntacticMatches, 22 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=631, Invalid=2561, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:29:15,659 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 250 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:15,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 751 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-10-16 17:29:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 468. [2022-10-16 17:29:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 345 states have (on average 1.0869565217391304) internal successors, (375), 355 states have internal predecessors, (375), 58 states have call successors, (58), 14 states have call predecessors, (58), 56 states have return successors, (549), 98 states have call predecessors, (549), 58 states have call successors, (549) [2022-10-16 17:29:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 982 transitions. [2022-10-16 17:29:15,751 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 982 transitions. Word has length 173 [2022-10-16 17:29:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:15,752 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 982 transitions. [2022-10-16 17:29:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 6 states have call successors, (17), 2 states have call predecessors, (17), 9 states have return successors, (26), 20 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-16 17:29:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 982 transitions. [2022-10-16 17:29:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-10-16 17:29:15,760 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:15,760 INFO L195 NwaCegarLoop]: trace histogram [25, 23, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:15,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:15,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:15,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1931479682, now seen corresponding path program 5 times [2022-10-16 17:29:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289844531] [2022-10-16 17:29:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:15,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 17:29:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-16 17:29:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-10-16 17:29:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1595 backedges. 469 proven. 234 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2022-10-16 17:29:17,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289844531] [2022-10-16 17:29:17,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289844531] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110266181] [2022-10-16 17:29:17,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:29:17,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:17,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:17,424 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:17,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:29:17,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-10-16 17:29:17,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:17,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 17:29:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1595 backedges. 469 proven. 234 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2022-10-16 17:29:18,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1595 backedges. 567 proven. 178 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2022-10-16 17:29:19,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110266181] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:19,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:19,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 22] total 36 [2022-10-16 17:29:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755163562] [2022-10-16 17:29:19,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:19,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 17:29:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 17:29:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:29:19,892 INFO L87 Difference]: Start difference. First operand 468 states and 982 transitions. Second operand has 37 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (33), 26 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:29:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:21,560 INFO L93 Difference]: Finished difference Result 843 states and 1934 transitions. [2022-10-16 17:29:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 17:29:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (33), 26 states have call predecessors, (33), 8 states have call successors, (33) Word has length 231 [2022-10-16 17:29:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:21,574 INFO L225 Difference]: With dead ends: 843 [2022-10-16 17:29:21,575 INFO L226 Difference]: Without dead ends: 841 [2022-10-16 17:29:21,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 513 SyntacticMatches, 19 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2785 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1115, Invalid=4585, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 17:29:21,580 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 293 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:21,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 876 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:29:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-10-16 17:29:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 537. [2022-10-16 17:29:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 397 states have (on average 1.0755667506297228) internal successors, (427), 407 states have internal predecessors, (427), 68 states have call successors, (68), 14 states have call predecessors, (68), 63 states have return successors, (1008), 115 states have call predecessors, (1008), 68 states have call successors, (1008) [2022-10-16 17:29:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1503 transitions. [2022-10-16 17:29:21,736 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1503 transitions. Word has length 231 [2022-10-16 17:29:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:21,738 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 1503 transitions. [2022-10-16 17:29:21,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (33), 26 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:29:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1503 transitions. [2022-10-16 17:29:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-10-16 17:29:21,745 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:21,746 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 13, 13, 12, 11, 11, 11, 10, 10, 9, 9, 9, 9, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:21,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:21,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:21,962 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:21,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:21,963 INFO L85 PathProgramCache]: Analyzing trace with hash 714771768, now seen corresponding path program 6 times [2022-10-16 17:29:21,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:21,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474391080] [2022-10-16 17:29:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:21,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-16 17:29:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 17:29:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:29:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:29:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 342 proven. 245 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-10-16 17:29:23,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474391080] [2022-10-16 17:29:23,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474391080] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597009494] [2022-10-16 17:29:23,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:29:23,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:23,213 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:23,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:29:23,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-10-16 17:29:23,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:23,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 71 conjunts are in the unsatisfiable core [2022-10-16 17:29:23,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:23,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:29:23,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:29:23,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 17:29:23,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 17:29:23,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:29:23,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:29:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 106 proven. 8 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2022-10-16 17:29:24,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 57 proven. 222 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2022-10-16 17:29:24,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597009494] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:24,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:24,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 39 [2022-10-16 17:29:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065262556] [2022-10-16 17:29:24,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:24,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-10-16 17:29:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-10-16 17:29:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2022-10-16 17:29:24,699 INFO L87 Difference]: Start difference. First operand 537 states and 1503 transitions. Second operand has 39 states, 37 states have (on average 2.810810810810811) internal successors, (104), 31 states have internal predecessors, (104), 12 states have call successors, (28), 9 states have call predecessors, (28), 13 states have return successors, (31), 20 states have call predecessors, (31), 11 states have call successors, (31) [2022-10-16 17:29:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:25,898 INFO L93 Difference]: Finished difference Result 1050 states and 2900 transitions. [2022-10-16 17:29:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 17:29:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 2.810810810810811) internal successors, (104), 31 states have internal predecessors, (104), 12 states have call successors, (28), 9 states have call predecessors, (28), 13 states have return successors, (31), 20 states have call predecessors, (31), 11 states have call successors, (31) Word has length 211 [2022-10-16 17:29:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:25,912 INFO L225 Difference]: With dead ends: 1050 [2022-10-16 17:29:25,912 INFO L226 Difference]: Without dead ends: 760 [2022-10-16 17:29:25,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 470 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=354, Invalid=2952, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:29:25,931 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 217 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:25,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2704 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 891 Invalid, 0 Unknown, 224 Unchecked, 0.6s Time] [2022-10-16 17:29:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-10-16 17:29:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 557. [2022-10-16 17:29:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 413 states have (on average 1.0726392251815982) internal successors, (443), 423 states have internal predecessors, (443), 69 states have call successors, (69), 15 states have call predecessors, (69), 66 states have return successors, (1098), 118 states have call predecessors, (1098), 69 states have call successors, (1098) [2022-10-16 17:29:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1610 transitions. [2022-10-16 17:29:26,109 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1610 transitions. Word has length 211 [2022-10-16 17:29:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:26,109 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 1610 transitions. [2022-10-16 17:29:26,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 2.810810810810811) internal successors, (104), 31 states have internal predecessors, (104), 12 states have call successors, (28), 9 states have call predecessors, (28), 13 states have return successors, (31), 20 states have call predecessors, (31), 11 states have call successors, (31) [2022-10-16 17:29:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1610 transitions. [2022-10-16 17:29:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 17:29:26,114 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:26,114 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:26,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:26,329 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1355397606, now seen corresponding path program 1 times [2022-10-16 17:29:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:26,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156836974] [2022-10-16 17:29:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:26,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:29:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:29:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:29:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-16 17:29:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-16 17:29:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-16 17:29:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:27,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156836974] [2022-10-16 17:29:27,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156836974] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:27,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233491728] [2022-10-16 17:29:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:27,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:27,264 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:27,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:29:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:27,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 17:29:27,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-16 17:29:27,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-16 17:29:28,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233491728] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:28,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:28,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 26] total 53 [2022-10-16 17:29:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964637482] [2022-10-16 17:29:28,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 17:29:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 17:29:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:29:28,622 INFO L87 Difference]: Start difference. First operand 557 states and 1610 transitions. Second operand has 54 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 37 states have internal predecessors, (100), 12 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) [2022-10-16 17:29:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:32,603 INFO L93 Difference]: Finished difference Result 834 states and 1998 transitions. [2022-10-16 17:29:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-10-16 17:29:32,604 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 37 states have internal predecessors, (100), 12 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) Word has length 103 [2022-10-16 17:29:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:32,617 INFO L225 Difference]: With dead ends: 834 [2022-10-16 17:29:32,617 INFO L226 Difference]: Without dead ends: 833 [2022-10-16 17:29:32,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3365 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1455, Invalid=10977, Unknown=0, NotChecked=0, Total=12432 [2022-10-16 17:29:32,622 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 377 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:32,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1623 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-16 17:29:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-10-16 17:29:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 640. [2022-10-16 17:29:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 471 states have (on average 1.0849256900212314) internal successors, (511), 484 states have internal predecessors, (511), 83 states have call successors, (83), 20 states have call predecessors, (83), 77 states have return successors, (1127), 135 states have call predecessors, (1127), 83 states have call successors, (1127) [2022-10-16 17:29:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1721 transitions. [2022-10-16 17:29:32,846 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1721 transitions. Word has length 103 [2022-10-16 17:29:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:32,847 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1721 transitions. [2022-10-16 17:29:32,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 37 states have internal predecessors, (100), 12 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (25), 17 states have call predecessors, (25), 12 states have call successors, (25) [2022-10-16 17:29:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1721 transitions. [2022-10-16 17:29:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-10-16 17:29:32,869 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:32,869 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 10, 10, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:32,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:33,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:33,086 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1744181500, now seen corresponding path program 7 times [2022-10-16 17:29:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:33,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877544984] [2022-10-16 17:29:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:29:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 17:29:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-16 17:29:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 329 proven. 355 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-10-16 17:29:34,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:34,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877544984] [2022-10-16 17:29:34,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877544984] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:34,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191657139] [2022-10-16 17:29:34,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:29:34,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:34,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:34,813 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:34,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:29:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:35,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 17:29:35,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 329 proven. 355 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-10-16 17:29:35,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 400 proven. 313 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-10-16 17:29:37,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191657139] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:37,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:37,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 19] total 34 [2022-10-16 17:29:37,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732203661] [2022-10-16 17:29:37,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:29:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:29:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 17:29:37,887 INFO L87 Difference]: Start difference. First operand 640 states and 1721 transitions. Second operand has 35 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (33), 25 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:29:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:39,523 INFO L93 Difference]: Finished difference Result 1056 states and 2984 transitions. [2022-10-16 17:29:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:29:39,524 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (33), 25 states have call predecessors, (33), 8 states have call successors, (33) Word has length 234 [2022-10-16 17:29:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:39,543 INFO L225 Difference]: With dead ends: 1056 [2022-10-16 17:29:39,544 INFO L226 Difference]: Without dead ends: 1054 [2022-10-16 17:29:39,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 521 SyntacticMatches, 27 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1062, Invalid=4194, Unknown=0, NotChecked=0, Total=5256 [2022-10-16 17:29:39,547 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 381 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:39,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 688 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:29:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-10-16 17:29:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 690. [2022-10-16 17:29:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 511 states have (on average 1.0782778864970646) internal successors, (551), 524 states have internal predecessors, (551), 87 states have call successors, (87), 20 states have call predecessors, (87), 83 states have return successors, (1463), 145 states have call predecessors, (1463), 87 states have call successors, (1463) [2022-10-16 17:29:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2101 transitions. [2022-10-16 17:29:39,848 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2101 transitions. Word has length 234 [2022-10-16 17:29:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:39,848 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2101 transitions. [2022-10-16 17:29:39,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 8 states have call successors, (19), 2 states have call predecessors, (19), 9 states have return successors, (33), 25 states have call predecessors, (33), 8 states have call successors, (33) [2022-10-16 17:29:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2101 transitions. [2022-10-16 17:29:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:29:39,858 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:39,858 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:39,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 17:29:40,073 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash 426953299, now seen corresponding path program 2 times [2022-10-16 17:29:40,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:40,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015482823] [2022-10-16 17:29:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 17:29:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 17:29:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:29:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-10-16 17:29:40,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:40,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015482823] [2022-10-16 17:29:40,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015482823] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:40,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021959974] [2022-10-16 17:29:40,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:40,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:40,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:40,829 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:40,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:29:41,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:29:41,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:41,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 17:29:41,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-10-16 17:29:41,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-10-16 17:29:42,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021959974] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:42,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:42,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 41 [2022-10-16 17:29:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282432825] [2022-10-16 17:29:42,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 17:29:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 17:29:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 17:29:42,379 INFO L87 Difference]: Start difference. First operand 690 states and 2101 transitions. Second operand has 42 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) [2022-10-16 17:29:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:44,461 INFO L93 Difference]: Finished difference Result 1038 states and 2858 transitions. [2022-10-16 17:29:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:29:44,462 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) Word has length 120 [2022-10-16 17:29:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:44,478 INFO L225 Difference]: With dead ends: 1038 [2022-10-16 17:29:44,478 INFO L226 Difference]: Without dead ends: 1037 [2022-10-16 17:29:44,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 250 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=529, Invalid=4583, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:29:44,481 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 288 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:44,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1314 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:29:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-10-16 17:29:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 840. [2022-10-16 17:29:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 625 states have (on average 1.0768) internal successors, (673), 640 states have internal predecessors, (673), 105 states have call successors, (105), 24 states have call predecessors, (105), 101 states have return successors, (1771), 175 states have call predecessors, (1771), 105 states have call successors, (1771) [2022-10-16 17:29:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2549 transitions. [2022-10-16 17:29:44,758 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2549 transitions. Word has length 120 [2022-10-16 17:29:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:44,758 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 2549 transitions. [2022-10-16 17:29:44,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5853658536585367) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 11 states have return successors, (25), 19 states have call predecessors, (25), 8 states have call successors, (25) [2022-10-16 17:29:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2549 transitions. [2022-10-16 17:29:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-10-16 17:29:44,775 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:44,775 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:44,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-10-16 17:29:44,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 17:29:44,989 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1240475465, now seen corresponding path program 5 times [2022-10-16 17:29:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:44,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718773306] [2022-10-16 17:29:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:44,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 17:29:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-16 17:29:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-10-16 17:29:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:29:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2545 backedges. 728 proven. 416 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-10-16 17:29:46,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:46,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718773306] [2022-10-16 17:29:46,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718773306] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:46,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773027223] [2022-10-16 17:29:46,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:29:46,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:46,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:46,762 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:46,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:29:47,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-10-16 17:29:47,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:47,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 45 conjunts are in the unsatisfiable core [2022-10-16 17:29:47,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2545 backedges. 728 proven. 416 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-10-16 17:29:47,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2545 backedges. 800 proven. 380 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2022-10-16 17:29:50,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773027223] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:50,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 19] total 34 [2022-10-16 17:29:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330846666] [2022-10-16 17:29:50,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:29:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:29:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=913, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 17:29:50,492 INFO L87 Difference]: Start difference. First operand 840 states and 2549 transitions. Second operand has 35 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (31), 24 states have call predecessors, (31), 8 states have call successors, (31) [2022-10-16 17:29:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:52,263 INFO L93 Difference]: Finished difference Result 1389 states and 4677 transitions. [2022-10-16 17:29:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:29:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (31), 24 states have call predecessors, (31), 8 states have call successors, (31) Word has length 281 [2022-10-16 17:29:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:52,295 INFO L225 Difference]: With dead ends: 1389 [2022-10-16 17:29:52,295 INFO L226 Difference]: Without dead ends: 1387 [2022-10-16 17:29:52,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 621 SyntacticMatches, 31 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3255 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1153, Invalid=4547, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 17:29:52,301 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 371 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 688 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:29:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-10-16 17:29:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 694. [2022-10-16 17:29:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 507 states have (on average 1.0946745562130178) internal successors, (555), 522 states have internal predecessors, (555), 95 states have call successors, (95), 24 states have call predecessors, (95), 83 states have return successors, (867), 147 states have call predecessors, (867), 95 states have call successors, (867) [2022-10-16 17:29:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1517 transitions. [2022-10-16 17:29:52,598 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1517 transitions. Word has length 281 [2022-10-16 17:29:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:52,599 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1517 transitions. [2022-10-16 17:29:52,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 8 states have call successors, (19), 2 states have call predecessors, (19), 10 states have return successors, (31), 24 states have call predecessors, (31), 8 states have call successors, (31) [2022-10-16 17:29:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1517 transitions. [2022-10-16 17:29:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:29:52,607 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:52,608 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:52,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:52,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 17:29:52,822 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:52,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash -183631341, now seen corresponding path program 3 times [2022-10-16 17:29:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:52,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535971500] [2022-10-16 17:29:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:29:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:29:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 17:29:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 17:29:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:29:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-10-16 17:29:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:53,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535971500] [2022-10-16 17:29:53,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535971500] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:53,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300278310] [2022-10-16 17:29:53,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:29:53,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:53,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:53,495 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:53,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:29:53,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 17:29:53,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 55 conjunts are in the unsatisfiable core [2022-10-16 17:29:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:53,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:29:53,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-10-16 17:29:54,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:29:54,479 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-10-16 17:29:54,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 1 [2022-10-16 17:29:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-10-16 17:29:54,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:29:55,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300278310] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:55,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:55,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 49 [2022-10-16 17:29:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629869402] [2022-10-16 17:29:55,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-10-16 17:29:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-10-16 17:29:55,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2204, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 17:29:55,177 INFO L87 Difference]: Start difference. First operand 694 states and 1517 transitions. Second operand has 49 states, 44 states have (on average 2.909090909090909) internal successors, (128), 38 states have internal predecessors, (128), 16 states have call successors, (37), 10 states have call predecessors, (37), 17 states have return successors, (38), 19 states have call predecessors, (38), 16 states have call successors, (38) [2022-10-16 17:29:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:58,178 INFO L93 Difference]: Finished difference Result 1596 states and 3322 transitions. [2022-10-16 17:29:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:29:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.909090909090909) internal successors, (128), 38 states have internal predecessors, (128), 16 states have call successors, (37), 10 states have call predecessors, (37), 17 states have return successors, (38), 19 states have call predecessors, (38), 16 states have call successors, (38) Word has length 120 [2022-10-16 17:29:58,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:58,193 INFO L225 Difference]: With dead ends: 1596 [2022-10-16 17:29:58,193 INFO L226 Difference]: Without dead ends: 1020 [2022-10-16 17:29:58,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=498, Invalid=6308, Unknown=0, NotChecked=0, Total=6806 [2022-10-16 17:29:58,205 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 336 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 4302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1206 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:58,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2461 Invalid, 4302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2894 Invalid, 0 Unknown, 1206 Unchecked, 1.7s Time] [2022-10-16 17:29:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-10-16 17:29:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 750. [2022-10-16 17:29:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 547 states have (on average 1.1042047531992687) internal successors, (604), 563 states have internal predecessors, (604), 103 states have call successors, (103), 27 states have call predecessors, (103), 91 states have return successors, (902), 159 states have call predecessors, (902), 103 states have call successors, (902) [2022-10-16 17:29:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1609 transitions. [2022-10-16 17:29:58,328 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1609 transitions. Word has length 120 [2022-10-16 17:29:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:58,329 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1609 transitions. [2022-10-16 17:29:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.909090909090909) internal successors, (128), 38 states have internal predecessors, (128), 16 states have call successors, (37), 10 states have call predecessors, (37), 17 states have return successors, (38), 19 states have call predecessors, (38), 16 states have call successors, (38) [2022-10-16 17:29:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1609 transitions. [2022-10-16 17:29:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-10-16 17:29:58,339 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:58,339 INFO L195 NwaCegarLoop]: trace histogram [40, 35, 20, 20, 20, 19, 19, 19, 16, 16, 15, 15, 15, 15, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:58,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:58,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:58,553 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:29:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1712452160, now seen corresponding path program 8 times [2022-10-16 17:29:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984872668] [2022-10-16 17:29:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:29:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:29:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 17:29:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 17:29:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:29:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-10-16 17:29:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:29:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:29:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-10-16 17:29:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 1152 proven. 434 refuted. 0 times theorem prover too weak. 2272 trivial. 0 not checked. [2022-10-16 17:30:00,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:00,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984872668] [2022-10-16 17:30:00,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984872668] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:00,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573791623] [2022-10-16 17:30:00,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:00,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:00,384 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:00,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:30:00,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:00,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:00,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 45 conjunts are in the unsatisfiable core [2022-10-16 17:30:00,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 1152 proven. 434 refuted. 0 times theorem prover too weak. 2272 trivial. 0 not checked. [2022-10-16 17:30:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 1278 proven. 367 refuted. 0 times theorem prover too weak. 2213 trivial. 0 not checked. [2022-10-16 17:30:04,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573791623] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:04,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:04,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 23] total 41 [2022-10-16 17:30:04,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816450937] [2022-10-16 17:30:04,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:04,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 17:30:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 17:30:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 17:30:04,429 INFO L87 Difference]: Start difference. First operand 750 states and 1609 transitions. Second operand has 42 states, 41 states have (on average 3.5365853658536586) internal successors, (145), 41 states have internal predecessors, (145), 8 states have call successors, (19), 2 states have call predecessors, (19), 12 states have return successors, (36), 29 states have call predecessors, (36), 8 states have call successors, (36) [2022-10-16 17:30:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:06,344 INFO L93 Difference]: Finished difference Result 1750 states and 6792 transitions. [2022-10-16 17:30:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 17:30:06,346 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.5365853658536586) internal successors, (145), 41 states have internal predecessors, (145), 8 states have call successors, (19), 2 states have call predecessors, (19), 12 states have return successors, (36), 29 states have call predecessors, (36), 8 states have call successors, (36) Word has length 322 [2022-10-16 17:30:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:06,398 INFO L225 Difference]: With dead ends: 1750 [2022-10-16 17:30:06,398 INFO L226 Difference]: Without dead ends: 1748 [2022-10-16 17:30:06,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 713 SyntacticMatches, 28 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1452, Invalid=6030, Unknown=0, NotChecked=0, Total=7482 [2022-10-16 17:30:06,407 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 361 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:06,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 812 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:30:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-10-16 17:30:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1198. [2022-10-16 17:30:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 906 states have (on average 1.0629139072847682) internal successors, (963), 922 states have internal predecessors, (963), 138 states have call successors, (138), 27 states have call predecessors, (138), 145 states have return successors, (5119), 248 states have call predecessors, (5119), 138 states have call successors, (5119) [2022-10-16 17:30:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 6220 transitions. [2022-10-16 17:30:07,251 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 6220 transitions. Word has length 322 [2022-10-16 17:30:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:07,252 INFO L495 AbstractCegarLoop]: Abstraction has 1198 states and 6220 transitions. [2022-10-16 17:30:07,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.5365853658536586) internal successors, (145), 41 states have internal predecessors, (145), 8 states have call successors, (19), 2 states have call predecessors, (19), 12 states have return successors, (36), 29 states have call predecessors, (36), 8 states have call successors, (36) [2022-10-16 17:30:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 6220 transitions. [2022-10-16 17:30:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-16 17:30:07,268 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:07,268 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:07,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:07,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 17:30:07,481 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:07,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash 363829015, now seen corresponding path program 2 times [2022-10-16 17:30:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:07,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403656323] [2022-10-16 17:30:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:07,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:30:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:30:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 17:30:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 17:30:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 17:30:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:30:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 4 proven. 68 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:30:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:08,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403656323] [2022-10-16 17:30:08,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403656323] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:08,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666068869] [2022-10-16 17:30:08,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:08,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:08,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:08,304 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:08,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:30:08,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:08,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:08,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 46 conjunts are in the unsatisfiable core [2022-10-16 17:30:08,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 11 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-16 17:30:08,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 9 proven. 86 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 17:30:10,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666068869] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:10,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:10,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 33] total 66 [2022-10-16 17:30:10,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176341411] [2022-10-16 17:30:10,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-16 17:30:10,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-16 17:30:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=4139, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:30:10,328 INFO L87 Difference]: Start difference. First operand 1198 states and 6220 transitions. Second operand has 67 states, 64 states have (on average 1.828125) internal successors, (117), 45 states have internal predecessors, (117), 17 states have call successors, (38), 10 states have call predecessors, (38), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) [2022-10-16 17:30:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:17,926 INFO L93 Difference]: Finished difference Result 1760 states and 7093 transitions. [2022-10-16 17:30:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-10-16 17:30:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 64 states have (on average 1.828125) internal successors, (117), 45 states have internal predecessors, (117), 17 states have call successors, (38), 10 states have call predecessors, (38), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) Word has length 111 [2022-10-16 17:30:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:17,968 INFO L225 Difference]: With dead ends: 1760 [2022-10-16 17:30:17,969 INFO L226 Difference]: Without dead ends: 1759 [2022-10-16 17:30:17,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3229, Invalid=27221, Unknown=0, NotChecked=0, Total=30450 [2022-10-16 17:30:17,976 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 452 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 4436 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 4436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:17,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 2330 Invalid, 5171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 4436 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-16 17:30:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2022-10-16 17:30:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1339. [2022-10-16 17:30:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1005 states have (on average 1.064676616915423) internal successors, (1070), 1025 states have internal predecessors, (1070), 162 states have call successors, (162), 31 states have call predecessors, (162), 163 states have return successors, (5182), 282 states have call predecessors, (5182), 162 states have call successors, (5182) [2022-10-16 17:30:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 6414 transitions. [2022-10-16 17:30:19,378 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 6414 transitions. Word has length 111 [2022-10-16 17:30:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:19,379 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 6414 transitions. [2022-10-16 17:30:19,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 64 states have (on average 1.828125) internal successors, (117), 45 states have internal predecessors, (117), 17 states have call successors, (38), 10 states have call predecessors, (38), 14 states have return successors, (30), 22 states have call predecessors, (30), 17 states have call successors, (30) [2022-10-16 17:30:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 6414 transitions. [2022-10-16 17:30:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-16 17:30:19,397 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:19,397 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:19,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:19,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 17:30:19,613 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting tree_inorderErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sizeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sizeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:30:19,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1078944715, now seen corresponding path program 4 times [2022-10-16 17:30:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:19,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703481820] [2022-10-16 17:30:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 17:30:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 17:30:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 17:30:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 17:30:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:30:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 17:30:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-16 17:30:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-16 17:30:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-10-16 17:30:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:20,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703481820] [2022-10-16 17:30:20,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703481820] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:20,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344272221] [2022-10-16 17:30:20,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:30:20,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:20,465 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:20,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:30:20,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:30:20,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:20,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 75 conjunts are in the unsatisfiable core [2022-10-16 17:30:20,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:20,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 17:30:20,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 17:30:23,011 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_size_#in~t.offset_BEFORE_CALL_8| Int) (|v_size_#in~t.base_BEFORE_CALL_8| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_size_#in~t.base_BEFORE_CALL_8|) (+ 4 |v_size_#in~t.offset_BEFORE_CALL_8|)) 0))) (exists ((|v_size_#in~t.offset_BEFORE_CALL_8| Int) (|v_size_#in~t.base_BEFORE_CALL_8| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_size_#in~t.base_BEFORE_CALL_8|) (+ 4 |v_size_#in~t.offset_BEFORE_CALL_8|)) 0)))) is different from true [2022-10-16 17:30:25,436 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_12| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_12|) (+ 4 |v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_12|)) 0))) (exists ((|v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_12| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_task_~t#1.base_BEFORE_CALL_12|) (+ 4 |v_ULTIMATE.start_task_~t#1.offset_BEFORE_CALL_12|)) 0)))) is different from true [2022-10-16 17:30:25,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-10-16 17:30:25,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-10-16 17:30:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 58 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 62 not checked. [2022-10-16 17:30:25,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:26,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344272221] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:26,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:30:26,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 34 [2022-10-16 17:30:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009172956] [2022-10-16 17:30:26,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 17:30:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 17:30:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1104, Unknown=2, NotChecked=134, Total=1332 [2022-10-16 17:30:26,156 INFO L87 Difference]: Start difference. First operand 1339 states and 6414 transitions. Second operand has 34 states, 32 states have (on average 3.03125) internal successors, (97), 27 states have internal predecessors, (97), 11 states have call successors, (25), 8 states have call predecessors, (25), 11 states have return successors, (23), 14 states have call predecessors, (23), 11 states have call successors, (23) [2022-10-16 17:31:57,006 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)