./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 21:19:11,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:19:11,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:19:11,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:19:11,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:19:11,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:19:11,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:19:11,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:19:11,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:19:11,777 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:19:11,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:19:11,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:19:11,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:19:11,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:19:11,781 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:19:11,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:19:11,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:19:11,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:19:11,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:19:11,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:19:11,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:19:11,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:19:11,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:19:11,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:19:11,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:19:11,788 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:19:11,788 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:19:11,788 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:19:11,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:19:11,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:19:11,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:19:11,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:19:11,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:19:11,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:19:11,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:19:11,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:19:11,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:19:11,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:19:11,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:19:11,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:19:11,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:19:11,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:19:11,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:19:11,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:19:11,794 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2024-10-11 21:19:12,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:19:12,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:19:12,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:19:12,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:19:12,084 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:19:12,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-10-11 21:19:13,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:19:13,733 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:19:13,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-10-11 21:19:13,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/723916b74/d301a7e3a82648589dd16935fd3fbbed/FLAG73993ffe0 [2024-10-11 21:19:13,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/723916b74/d301a7e3a82648589dd16935fd3fbbed [2024-10-11 21:19:13,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:19:13,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:19:13,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:19:13,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:19:13,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:19:13,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:19:13" (1/1) ... [2024-10-11 21:19:13,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4af4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:13, skipping insertion in model container [2024-10-11 21:19:13,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:19:13" (1/1) ... [2024-10-11 21:19:13,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:19:13,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:19:13,969 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:19:13,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:19:14,005 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:19:14,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14 WrapperNode [2024-10-11 21:19:14,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:19:14,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:19:14,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:19:14,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:19:14,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,054 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-10-11 21:19:14,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:19:14,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:19:14,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:19:14,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:19:14,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,070 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,086 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 2, 12, 8, 9]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-10-11 21:19:14,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:19:14,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:19:14,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:19:14,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:19:14,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (1/1) ... [2024-10-11 21:19:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:19:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:14,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:19:14,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:19:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 21:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-10-11 21:19:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:19:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 21:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 21:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 21:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 21:19:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 21:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 21:19:14,328 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:19:14,331 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:19:14,676 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-10-11 21:19:14,677 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:19:14,727 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:19:14,728 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 21:19:14,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:19:14 BoogieIcfgContainer [2024-10-11 21:19:14,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:19:14,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:19:14,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:19:14,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:19:14,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:19:13" (1/3) ... [2024-10-11 21:19:14,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9d90fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:19:14, skipping insertion in model container [2024-10-11 21:19:14,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:14" (2/3) ... [2024-10-11 21:19:14,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9d90fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:19:14, skipping insertion in model container [2024-10-11 21:19:14,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:19:14" (3/3) ... [2024-10-11 21:19:14,740 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-10-11 21:19:14,758 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:19:14,758 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-10-11 21:19:14,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:19:14,832 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@37f39f27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:19:14,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-11 21:19:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 65 states have (on average 1.8153846153846154) internal successors, (118), 116 states have internal predecessors, (118), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-11 21:19:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 21:19:14,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:14,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 21:19:14,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:14,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash 182797673, now seen corresponding path program 1 times [2024-10-11 21:19:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845030329] [2024-10-11 21:19:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:15,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845030329] [2024-10-11 21:19:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845030329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:15,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:15,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:19:15,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852091933] [2024-10-11 21:19:15,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:15,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:15,379 INFO L87 Difference]: Start difference. First operand has 126 states, 65 states have (on average 1.8153846153846154) internal successors, (118), 116 states have internal predecessors, (118), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:19:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:15,622 INFO L93 Difference]: Finished difference Result 320 states and 357 transitions. [2024-10-11 21:19:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 21:19:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:15,632 INFO L225 Difference]: With dead ends: 320 [2024-10-11 21:19:15,632 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:19:15,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:15,638 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 118 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:15,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 563 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:19:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2024-10-11 21:19:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.7419354838709677) internal successors, (162), 143 states have internal predecessors, (162), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-11 21:19:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2024-10-11 21:19:15,693 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 5 [2024-10-11 21:19:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:15,693 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2024-10-11 21:19:15,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:19:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2024-10-11 21:19:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 21:19:15,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:15,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:15,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:19:15,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:15,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -133385090, now seen corresponding path program 1 times [2024-10-11 21:19:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:15,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424419143] [2024-10-11 21:19:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:15,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:15,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:16,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:16,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424419143] [2024-10-11 21:19:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424419143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:16,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:16,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835363923] [2024-10-11 21:19:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:16,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:16,016 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:16,171 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2024-10-11 21:19:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-10-11 21:19:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:16,173 INFO L225 Difference]: With dead ends: 193 [2024-10-11 21:19:16,177 INFO L226 Difference]: Without dead ends: 191 [2024-10-11 21:19:16,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:16,179 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 113 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:16,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 546 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-11 21:19:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 156. [2024-10-11 21:19:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 143 states have internal predecessors, (160), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-11 21:19:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2024-10-11 21:19:16,202 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 15 [2024-10-11 21:19:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:16,205 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2024-10-11 21:19:16,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2024-10-11 21:19:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 21:19:16,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:16,206 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:16,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:19:16,206 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:16,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash 665948896, now seen corresponding path program 1 times [2024-10-11 21:19:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:16,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693531436] [2024-10-11 21:19:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:16,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:16,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:16,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693531436] [2024-10-11 21:19:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693531436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:16,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:16,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:16,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664970177] [2024-10-11 21:19:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:16,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:16,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:16,394 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:16,537 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2024-10-11 21:19:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-10-11 21:19:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:16,539 INFO L225 Difference]: With dead ends: 191 [2024-10-11 21:19:16,539 INFO L226 Difference]: Without dead ends: 189 [2024-10-11 21:19:16,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:16,542 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 103 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:16,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 543 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-11 21:19:16,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 156. [2024-10-11 21:19:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.6989247311827957) internal successors, (158), 143 states have internal predecessors, (158), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-11 21:19:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2024-10-11 21:19:16,563 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 17 [2024-10-11 21:19:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:16,563 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2024-10-11 21:19:16,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2024-10-11 21:19:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 21:19:16,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:16,565 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:16,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:19:16,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:16,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 26763586, now seen corresponding path program 1 times [2024-10-11 21:19:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:16,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655444020] [2024-10-11 21:19:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:16,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:16,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307817620] [2024-10-11 21:19:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:16,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:16,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:16,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:16,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:19:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:16,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 21:19:16,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:16,779 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:16,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:16,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:16,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655444020] [2024-10-11 21:19:16,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307817620] [2024-10-11 21:19:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307817620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:16,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:16,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 21:19:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076159718] [2024-10-11 21:19:16,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:16,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:19:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:19:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:19:16,978 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:17,366 INFO L93 Difference]: Finished difference Result 215 states and 226 transitions. [2024-10-11 21:19:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:19:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-10-11 21:19:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:17,368 INFO L225 Difference]: With dead ends: 215 [2024-10-11 21:19:17,368 INFO L226 Difference]: Without dead ends: 213 [2024-10-11 21:19:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:19:17,370 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 170 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:17,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 962 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-11 21:19:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 156. [2024-10-11 21:19:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.6774193548387097) internal successors, (156), 143 states have internal predecessors, (156), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-11 21:19:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2024-10-11 21:19:17,387 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 19 [2024-10-11 21:19:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:17,389 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2024-10-11 21:19:17,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2024-10-11 21:19:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 21:19:17,390 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:17,390 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:17,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:19:17,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:17,595 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 365629163, now seen corresponding path program 1 times [2024-10-11 21:19:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941049133] [2024-10-11 21:19:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:17,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799549405] [2024-10-11 21:19:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:17,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:17,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:17,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:17,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:19:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:17,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 21:19:17,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:17,728 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 1 [2024-10-11 21:19:17,757 INFO L378 Elim1Store]: Elim1 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 [2024-10-11 21:19:17,911 INFO L378 Elim1Store]: Elim1 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 22 treesize of output 10 [2024-10-11 21:19:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:17,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941049133] [2024-10-11 21:19:18,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799549405] [2024-10-11 21:19:18,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799549405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:18,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:18,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-11 21:19:18,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453048049] [2024-10-11 21:19:18,074 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:18,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:19:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:19:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:19:18,078 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:22,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:26,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:30,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:30,550 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-10-11 21:19:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:19:30,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-10-11 21:19:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:30,553 INFO L225 Difference]: With dead ends: 229 [2024-10-11 21:19:30,553 INFO L226 Difference]: Without dead ends: 228 [2024-10-11 21:19:30,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:19:30,554 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 204 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:30,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 914 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 357 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-10-11 21:19:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-11 21:19:30,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 174. [2024-10-11 21:19:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6666666666666667) internal successors, (180), 158 states have internal predecessors, (180), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2024-10-11 21:19:30,565 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 27 [2024-10-11 21:19:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:30,565 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2024-10-11 21:19:30,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2024-10-11 21:19:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 21:19:30,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:30,566 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 21:19:30,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 21:19:30,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:30,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:30,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1550397774, now seen corresponding path program 1 times [2024-10-11 21:19:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665997473] [2024-10-11 21:19:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364094338] [2024-10-11 21:19:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:30,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:30,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:30,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:19:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:30,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 21:19:30,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:30,902 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:31,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:31,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665997473] [2024-10-11 21:19:31,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364094338] [2024-10-11 21:19:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364094338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443779107] [2024-10-11 21:19:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:31,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:31,030 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:31,233 INFO L93 Difference]: Finished difference Result 228 states and 237 transitions. [2024-10-11 21:19:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-10-11 21:19:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:31,235 INFO L225 Difference]: With dead ends: 228 [2024-10-11 21:19:31,235 INFO L226 Difference]: Without dead ends: 227 [2024-10-11 21:19:31,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:31,236 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 142 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:31,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 626 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-11 21:19:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 174. [2024-10-11 21:19:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 158 states have internal predecessors, (179), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 204 transitions. [2024-10-11 21:19:31,252 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 204 transitions. Word has length 28 [2024-10-11 21:19:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:31,253 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 204 transitions. [2024-10-11 21:19:31,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 204 transitions. [2024-10-11 21:19:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 21:19:31,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:31,254 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 21:19:31,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:31,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:31,455 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:31,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash -817690675, now seen corresponding path program 1 times [2024-10-11 21:19:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:31,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224552627] [2024-10-11 21:19:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:31,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:31,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:31,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:31,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224552627] [2024-10-11 21:19:31,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224552627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:31,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:31,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:31,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558960010] [2024-10-11 21:19:31,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:31,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:31,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:31,604 INFO L87 Difference]: Start difference. First operand 174 states and 204 transitions. Second operand has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:31,781 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2024-10-11 21:19:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-10-11 21:19:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:31,783 INFO L225 Difference]: With dead ends: 211 [2024-10-11 21:19:31,783 INFO L226 Difference]: Without dead ends: 209 [2024-10-11 21:19:31,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:31,784 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 121 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:31,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 520 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-11 21:19:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2024-10-11 21:19:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6388888888888888) internal successors, (177), 158 states have internal predecessors, (177), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2024-10-11 21:19:31,793 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 29 [2024-10-11 21:19:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:31,794 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2024-10-11 21:19:31,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2024-10-11 21:19:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 21:19:31,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:31,795 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 21:19:31,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 21:19:31,796 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 178278575, now seen corresponding path program 1 times [2024-10-11 21:19:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914305957] [2024-10-11 21:19:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532488750] [2024-10-11 21:19:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:31,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:31,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:19:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:31,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 21:19:31,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:31,914 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:31,920 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:32,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914305957] [2024-10-11 21:19:32,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532488750] [2024-10-11 21:19:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532488750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848039723] [2024-10-11 21:19:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:32,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:19:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:19:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:32,201 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:32,432 INFO L93 Difference]: Finished difference Result 225 states and 234 transitions. [2024-10-11 21:19:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-10-11 21:19:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:32,434 INFO L225 Difference]: With dead ends: 225 [2024-10-11 21:19:32,434 INFO L226 Difference]: Without dead ends: 223 [2024-10-11 21:19:32,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:19:32,435 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 201 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:32,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 516 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-10-11 21:19:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2024-10-11 21:19:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 158 states have internal predecessors, (175), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 200 transitions. [2024-10-11 21:19:32,448 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 200 transitions. Word has length 31 [2024-10-11 21:19:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:32,449 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 200 transitions. [2024-10-11 21:19:32,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 200 transitions. [2024-10-11 21:19:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 21:19:32,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:32,451 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 21:19:32,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:32,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 21:19:32,652 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:32,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash -472979055, now seen corresponding path program 1 times [2024-10-11 21:19:32,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:32,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869124810] [2024-10-11 21:19:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:32,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:32,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:32,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:32,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869124810] [2024-10-11 21:19:32,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869124810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:32,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722993013] [2024-10-11 21:19:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:32,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:32,798 INFO L87 Difference]: Start difference. First operand 174 states and 200 transitions. Second operand has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:32,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:32,926 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2024-10-11 21:19:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-10-11 21:19:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:32,928 INFO L225 Difference]: With dead ends: 211 [2024-10-11 21:19:32,928 INFO L226 Difference]: Without dead ends: 209 [2024-10-11 21:19:32,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:32,928 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 103 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:32,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 526 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-11 21:19:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2024-10-11 21:19:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6018518518518519) internal successors, (173), 158 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2024-10-11 21:19:32,939 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 33 [2024-10-11 21:19:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:32,939 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2024-10-11 21:19:32,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2024-10-11 21:19:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 21:19:32,940 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:32,940 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 21:19:32,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 21:19:32,941 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_40_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:32,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 733663859, now seen corresponding path program 1 times [2024-10-11 21:19:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:32,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906501332] [2024-10-11 21:19:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:33,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:33,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906501332] [2024-10-11 21:19:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906501332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:33,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:33,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211509416] [2024-10-11 21:19:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:33,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:33,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:33,143 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:33,411 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2024-10-11 21:19:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-10-11 21:19:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:33,413 INFO L225 Difference]: With dead ends: 209 [2024-10-11 21:19:33,413 INFO L226 Difference]: Without dead ends: 207 [2024-10-11 21:19:33,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:33,414 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 104 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:33,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 539 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-11 21:19:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 174. [2024-10-11 21:19:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.5833333333333333) internal successors, (171), 158 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2024-10-11 21:19:33,422 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 35 [2024-10-11 21:19:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:33,422 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2024-10-11 21:19:33,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2024-10-11 21:19:33,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 21:19:33,425 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:33,425 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 21:19:33,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 21:19:33,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_40_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:33,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1268743226, now seen corresponding path program 1 times [2024-10-11 21:19:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:33,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349806068] [2024-10-11 21:19:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:33,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:33,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:33,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349806068] [2024-10-11 21:19:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349806068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453517179] [2024-10-11 21:19:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:33,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:33,786 INFO L87 Difference]: Start difference. First operand 174 states and 196 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:34,579 INFO L93 Difference]: Finished difference Result 199 states and 209 transitions. [2024-10-11 21:19:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:34,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-10-11 21:19:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:34,581 INFO L225 Difference]: With dead ends: 199 [2024-10-11 21:19:34,581 INFO L226 Difference]: Without dead ends: 197 [2024-10-11 21:19:34,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:34,582 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 95 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:34,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 577 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 21:19:34,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-11 21:19:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 174. [2024-10-11 21:19:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.5648148148148149) internal successors, (169), 158 states have internal predecessors, (169), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2024-10-11 21:19:34,593 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 36 [2024-10-11 21:19:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:34,593 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2024-10-11 21:19:34,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 21:19:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2024-10-11 21:19:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 21:19:34,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:34,594 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:34,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 21:19:34,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_40_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:34,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash -536299601, now seen corresponding path program 1 times [2024-10-11 21:19:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:34,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544443480] [2024-10-11 21:19:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:34,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:34,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:34,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:34,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:34,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544443480] [2024-10-11 21:19:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544443480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498210289] [2024-10-11 21:19:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:34,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:34,764 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:34,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:34,866 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2024-10-11 21:19:34,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:34,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-10-11 21:19:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:34,869 INFO L225 Difference]: With dead ends: 184 [2024-10-11 21:19:34,869 INFO L226 Difference]: Without dead ends: 182 [2024-10-11 21:19:34,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:34,872 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 49 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:34,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 559 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-11 21:19:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2024-10-11 21:19:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.5545454545454545) internal successors, (171), 160 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2024-10-11 21:19:34,882 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 46 [2024-10-11 21:19:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:34,883 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2024-10-11 21:19:34,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2024-10-11 21:19:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-11 21:19:34,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:34,885 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:34,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 21:19:34,886 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_40_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:34,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash 12161873, now seen corresponding path program 1 times [2024-10-11 21:19:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:34,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292095040] [2024-10-11 21:19:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:34,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:35,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292095040] [2024-10-11 21:19:35,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292095040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:35,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:35,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984216676] [2024-10-11 21:19:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:35,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:35,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:35,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:35,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:35,040 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:35,149 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2024-10-11 21:19:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:35,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2024-10-11 21:19:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:35,151 INFO L225 Difference]: With dead ends: 203 [2024-10-11 21:19:35,151 INFO L226 Difference]: Without dead ends: 201 [2024-10-11 21:19:35,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:35,152 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 72 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:35,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 554 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-11 21:19:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 178. [2024-10-11 21:19:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 112 states have (on average 1.5446428571428572) internal successors, (173), 162 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-11 21:19:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2024-10-11 21:19:35,164 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 48 [2024-10-11 21:19:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:35,165 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2024-10-11 21:19:35,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2024-10-11 21:19:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 21:19:35,168 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:35,168 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:35,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 21:19:35,168 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:35,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash 376631387, now seen corresponding path program 1 times [2024-10-11 21:19:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:35,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89114315] [2024-10-11 21:19:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89114315] [2024-10-11 21:19:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89114315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:35,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:35,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641036457] [2024-10-11 21:19:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:35,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:35,333 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:35,463 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2024-10-11 21:19:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:19:35,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-10-11 21:19:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:35,465 INFO L225 Difference]: With dead ends: 186 [2024-10-11 21:19:35,465 INFO L226 Difference]: Without dead ends: 182 [2024-10-11 21:19:35,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:35,466 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 71 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:35,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 392 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-11 21:19:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-10-11 21:19:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 113 states have (on average 1.5044247787610618) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-11 21:19:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-10-11 21:19:35,477 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 49 [2024-10-11 21:19:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:35,477 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-10-11 21:19:35,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-10-11 21:19:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 21:19:35,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:35,478 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:35,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 21:19:35,478 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_40_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:35,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1197338893, now seen corresponding path program 1 times [2024-10-11 21:19:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966397154] [2024-10-11 21:19:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966397154] [2024-10-11 21:19:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966397154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:35,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109758699] [2024-10-11 21:19:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:35,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:35,807 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:35,973 INFO L93 Difference]: Finished difference Result 194 states and 205 transitions. [2024-10-11 21:19:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-10-11 21:19:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:35,974 INFO L225 Difference]: With dead ends: 194 [2024-10-11 21:19:35,975 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:19:35,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:35,975 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 60 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:35,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 613 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:19:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2024-10-11 21:19:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-11 21:19:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-10-11 21:19:35,983 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-10-11 21:19:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:35,983 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-10-11 21:19:35,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-10-11 21:19:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 21:19:35,984 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:35,984 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:35,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 21:19:35,985 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_40_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:35,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1537200080, now seen corresponding path program 1 times [2024-10-11 21:19:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:35,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516667356] [2024-10-11 21:19:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:35,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:36,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516667356] [2024-10-11 21:19:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516667356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:36,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:36,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634674497] [2024-10-11 21:19:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:36,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:36,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:36,324 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:36,486 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-10-11 21:19:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-10-11 21:19:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:36,487 INFO L225 Difference]: With dead ends: 194 [2024-10-11 21:19:36,487 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:19:36,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:36,488 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 59 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:36,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 618 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:19:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2024-10-11 21:19:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-11 21:19:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-10-11 21:19:36,497 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-10-11 21:19:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:36,498 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-10-11 21:19:36,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-10-11 21:19:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 21:19:36,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:36,499 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:36,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 21:19:36,499 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:36,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash -454679621, now seen corresponding path program 1 times [2024-10-11 21:19:36,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:36,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390963908] [2024-10-11 21:19:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390963908] [2024-10-11 21:19:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390963908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046500095] [2024-10-11 21:19:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:36,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:36,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:36,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:36,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:19:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 21:19:36,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:37,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 38 treesize of output 15 [2024-10-11 21:19:37,203 INFO L378 Elim1Store]: Elim1 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 17 treesize of output 9 [2024-10-11 21:19:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:37,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046500095] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:37,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:37,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-10-11 21:19:37,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128601091] [2024-10-11 21:19:37,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:37,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 21:19:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 21:19:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:19:37,407 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 21 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 21:19:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:37,856 INFO L93 Difference]: Finished difference Result 187 states and 205 transitions. [2024-10-11 21:19:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:19:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-10-11 21:19:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:37,858 INFO L225 Difference]: With dead ends: 187 [2024-10-11 21:19:37,858 INFO L226 Difference]: Without dead ends: 184 [2024-10-11 21:19:37,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:19:37,859 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 322 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:37,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1429 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:37,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-11 21:19:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2024-10-11 21:19:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 162 states have internal predecessors, (169), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-11 21:19:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 195 transitions. [2024-10-11 21:19:37,870 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 195 transitions. Word has length 55 [2024-10-11 21:19:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:37,871 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 195 transitions. [2024-10-11 21:19:37,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 21:19:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 195 transitions. [2024-10-11 21:19:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 21:19:37,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:37,872 INFO L215 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] [2024-10-11 21:19:37,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 21:19:38,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 21:19:38,073 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:38,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:38,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1210166326, now seen corresponding path program 1 times [2024-10-11 21:19:38,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:38,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276623387] [2024-10-11 21:19:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:38,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:38,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276623387] [2024-10-11 21:19:38,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276623387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401479113] [2024-10-11 21:19:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:38,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:38,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:38,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:19:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 21:19:38,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:38,498 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:38,540 INFO L378 Elim1Store]: Elim1 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 7 treesize of output 3 [2024-10-11 21:19:38,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2024-10-11 21:19:38,808 INFO L378 Elim1Store]: Elim1 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 [2024-10-11 21:19:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:38,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:39,116 INFO L378 Elim1Store]: Elim1 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 23 treesize of output 15 [2024-10-11 21:19:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 21:19:39,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401479113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:39,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:39,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-10-11 21:19:39,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126043540] [2024-10-11 21:19:39,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:39,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 21:19:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 21:19:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-10-11 21:19:39,193 INFO L87 Difference]: Start difference. First operand 179 states and 195 transitions. Second operand has 29 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-11 21:19:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:39,956 INFO L93 Difference]: Finished difference Result 333 states and 355 transitions. [2024-10-11 21:19:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 21:19:39,957 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2024-10-11 21:19:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:39,959 INFO L225 Difference]: With dead ends: 333 [2024-10-11 21:19:39,959 INFO L226 Difference]: Without dead ends: 330 [2024-10-11 21:19:39,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 21:19:39,960 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 488 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:39,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1718 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-11 21:19:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 256. [2024-10-11 21:19:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.5248618784530388) internal successors, (276), 229 states have internal predecessors, (276), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 322 transitions. [2024-10-11 21:19:39,973 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 322 transitions. Word has length 56 [2024-10-11 21:19:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:39,974 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 322 transitions. [2024-10-11 21:19:39,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-11 21:19:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 322 transitions. [2024-10-11 21:19:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 21:19:39,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:39,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:39,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:40,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 21:19:40,179 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:40,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash -936037320, now seen corresponding path program 1 times [2024-10-11 21:19:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:40,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103155584] [2024-10-11 21:19:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:19:40,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:40,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103155584] [2024-10-11 21:19:40,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103155584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:40,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:40,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943816884] [2024-10-11 21:19:40,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:40,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:40,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:40,335 INFO L87 Difference]: Start difference. First operand 256 states and 322 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:40,467 INFO L93 Difference]: Finished difference Result 261 states and 323 transitions. [2024-10-11 21:19:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-11 21:19:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:40,469 INFO L225 Difference]: With dead ends: 261 [2024-10-11 21:19:40,471 INFO L226 Difference]: Without dead ends: 259 [2024-10-11 21:19:40,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:40,472 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 64 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:40,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 373 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-11 21:19:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2024-10-11 21:19:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.5138121546961325) internal successors, (274), 229 states have internal predecessors, (274), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 320 transitions. [2024-10-11 21:19:40,486 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 320 transitions. Word has length 59 [2024-10-11 21:19:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:40,486 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 320 transitions. [2024-10-11 21:19:40,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:40,486 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 320 transitions. [2024-10-11 21:19:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 21:19:40,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:40,487 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:40,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 21:19:40,488 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:40,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1883695718, now seen corresponding path program 1 times [2024-10-11 21:19:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511081836] [2024-10-11 21:19:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:19:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511081836] [2024-10-11 21:19:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511081836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:40,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239644633] [2024-10-11 21:19:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:40,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:40,623 INFO L87 Difference]: Start difference. First operand 256 states and 320 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:40,740 INFO L93 Difference]: Finished difference Result 259 states and 321 transitions. [2024-10-11 21:19:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:19:40,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-11 21:19:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:40,742 INFO L225 Difference]: With dead ends: 259 [2024-10-11 21:19:40,742 INFO L226 Difference]: Without dead ends: 257 [2024-10-11 21:19:40,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:40,743 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 83 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:40,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 326 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-10-11 21:19:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2024-10-11 21:19:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.5027624309392265) internal successors, (272), 229 states have internal predecessors, (272), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 318 transitions. [2024-10-11 21:19:40,760 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 318 transitions. Word has length 61 [2024-10-11 21:19:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:40,761 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 318 transitions. [2024-10-11 21:19:40,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 318 transitions. [2024-10-11 21:19:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 21:19:40,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:40,762 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:40,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 21:19:40,764 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:40,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2050349316, now seen corresponding path program 1 times [2024-10-11 21:19:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:40,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731613782] [2024-10-11 21:19:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:40,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958035377] [2024-10-11 21:19:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:40,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:40,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:40,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:40,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:19:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 21:19:40,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:40,896 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:41,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731613782] [2024-10-11 21:19:41,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958035377] [2024-10-11 21:19:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958035377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:41,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761672871] [2024-10-11 21:19:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:41,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:41,028 INFO L87 Difference]: Start difference. First operand 256 states and 318 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:41,187 INFO L93 Difference]: Finished difference Result 283 states and 342 transitions. [2024-10-11 21:19:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:41,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2024-10-11 21:19:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:41,189 INFO L225 Difference]: With dead ends: 283 [2024-10-11 21:19:41,189 INFO L226 Difference]: Without dead ends: 281 [2024-10-11 21:19:41,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:41,190 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 92 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:41,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 449 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-10-11 21:19:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2024-10-11 21:19:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.4917127071823204) internal successors, (270), 229 states have internal predecessors, (270), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 316 transitions. [2024-10-11 21:19:41,201 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 316 transitions. Word has length 63 [2024-10-11 21:19:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:41,201 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 316 transitions. [2024-10-11 21:19:41,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 316 transitions. [2024-10-11 21:19:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 21:19:41,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:41,202 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-11 21:19:41,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:41,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:41,403 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:41,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1448170576, now seen corresponding path program 1 times [2024-10-11 21:19:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496148661] [2024-10-11 21:19:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:41,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:41,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496148661] [2024-10-11 21:19:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496148661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:41,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905403751] [2024-10-11 21:19:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:41,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:41,533 INFO L87 Difference]: Start difference. First operand 256 states and 316 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:41,617 INFO L93 Difference]: Finished difference Result 256 states and 316 transitions. [2024-10-11 21:19:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:41,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2024-10-11 21:19:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:41,619 INFO L225 Difference]: With dead ends: 256 [2024-10-11 21:19:41,619 INFO L226 Difference]: Without dead ends: 255 [2024-10-11 21:19:41,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:41,620 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 52 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:41,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 363 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-10-11 21:19:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-10-11 21:19:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 181 states have (on average 1.4751381215469612) internal successors, (267), 228 states have internal predecessors, (267), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 313 transitions. [2024-10-11 21:19:41,632 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 313 transitions. Word has length 65 [2024-10-11 21:19:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:41,632 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 313 transitions. [2024-10-11 21:19:41,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 313 transitions. [2024-10-11 21:19:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 21:19:41,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:41,633 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-11 21:19:41,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 21:19:41,633 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_29_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:41,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1943614943, now seen corresponding path program 1 times [2024-10-11 21:19:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:41,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472742945] [2024-10-11 21:19:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472742945] [2024-10-11 21:19:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472742945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632335316] [2024-10-11 21:19:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:41,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:41,718 INFO L87 Difference]: Start difference. First operand 255 states and 313 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:41,794 INFO L93 Difference]: Finished difference Result 255 states and 313 transitions. [2024-10-11 21:19:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:41,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-10-11 21:19:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:41,796 INFO L225 Difference]: With dead ends: 255 [2024-10-11 21:19:41,796 INFO L226 Difference]: Without dead ends: 254 [2024-10-11 21:19:41,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:41,797 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 49 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:41,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 363 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-10-11 21:19:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-10-11 21:19:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 181 states have (on average 1.4585635359116023) internal successors, (264), 227 states have internal predecessors, (264), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 310 transitions. [2024-10-11 21:19:41,809 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 310 transitions. Word has length 66 [2024-10-11 21:19:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:41,809 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 310 transitions. [2024-10-11 21:19:41,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 310 transitions. [2024-10-11 21:19:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 21:19:41,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:41,810 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-11 21:19:41,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 21:19:41,811 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:41,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 122521138, now seen corresponding path program 1 times [2024-10-11 21:19:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898604483] [2024-10-11 21:19:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:41,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:41,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898604483] [2024-10-11 21:19:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898604483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:41,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:41,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952997218] [2024-10-11 21:19:41,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:41,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:41,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:41,907 INFO L87 Difference]: Start difference. First operand 254 states and 310 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:41,989 INFO L93 Difference]: Finished difference Result 254 states and 310 transitions. [2024-10-11 21:19:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:41,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-10-11 21:19:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:41,991 INFO L225 Difference]: With dead ends: 254 [2024-10-11 21:19:41,991 INFO L226 Difference]: Without dead ends: 253 [2024-10-11 21:19:41,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:41,992 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 44 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:41,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 389 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-10-11 21:19:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-10-11 21:19:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 181 states have (on average 1.441988950276243) internal successors, (261), 226 states have internal predecessors, (261), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2024-10-11 21:19:42,004 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 67 [2024-10-11 21:19:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:42,004 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2024-10-11 21:19:42,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2024-10-11 21:19:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 21:19:42,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:42,005 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:42,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 21:19:42,005 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_29_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:42,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash -496811967, now seen corresponding path program 1 times [2024-10-11 21:19:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:42,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358145515] [2024-10-11 21:19:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:42,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358145515] [2024-10-11 21:19:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358145515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:42,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:42,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930227608] [2024-10-11 21:19:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:42,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:42,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:42,120 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:42,207 INFO L93 Difference]: Finished difference Result 253 states and 307 transitions. [2024-10-11 21:19:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:42,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-10-11 21:19:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:42,209 INFO L225 Difference]: With dead ends: 253 [2024-10-11 21:19:42,209 INFO L226 Difference]: Without dead ends: 252 [2024-10-11 21:19:42,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:42,209 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 41 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:42,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 449 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-10-11 21:19:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-10-11 21:19:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 181 states have (on average 1.425414364640884) internal successors, (258), 225 states have internal predecessors, (258), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 304 transitions. [2024-10-11 21:19:42,221 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 304 transitions. Word has length 68 [2024-10-11 21:19:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:42,222 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 304 transitions. [2024-10-11 21:19:42,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 304 transitions. [2024-10-11 21:19:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 21:19:42,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:42,223 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-10-11 21:19:42,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 21:19:42,223 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:42,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:42,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1778698260, now seen corresponding path program 1 times [2024-10-11 21:19:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800828246] [2024-10-11 21:19:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997178996] [2024-10-11 21:19:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:42,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:42,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:42,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 21:19:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 21:19:42,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:42,375 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:42,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-11 21:19:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:42,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 21:19:42,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:42,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800828246] [2024-10-11 21:19:42,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:42,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997178996] [2024-10-11 21:19:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997178996] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:42,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:42,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-10-11 21:19:42,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409308931] [2024-10-11 21:19:42,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:42,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 21:19:42,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 21:19:42,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-11 21:19:42,671 INFO L87 Difference]: Start difference. First operand 252 states and 304 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:42,731 INFO L93 Difference]: Finished difference Result 252 states and 304 transitions. [2024-10-11 21:19:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 21:19:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2024-10-11 21:19:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:42,733 INFO L225 Difference]: With dead ends: 252 [2024-10-11 21:19:42,733 INFO L226 Difference]: Without dead ends: 251 [2024-10-11 21:19:42,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:19:42,734 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 7 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:42,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 319 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:19:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-11 21:19:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-10-11 21:19:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 181 states have (on average 1.408839779005525) internal successors, (255), 224 states have internal predecessors, (255), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2024-10-11 21:19:42,747 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 69 [2024-10-11 21:19:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:42,747 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2024-10-11 21:19:42,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:42,748 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2024-10-11 21:19:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 21:19:42,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:42,748 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2024-10-11 21:19:42,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 21:19:42,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 21:19:42,949 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_29_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:42,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash -694928733, now seen corresponding path program 1 times [2024-10-11 21:19:42,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:42,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211177107] [2024-10-11 21:19:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:42,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501367608] [2024-10-11 21:19:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:42,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:42,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:42,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 21:19:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 21:19:43,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:43,118 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:43,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-11 21:19:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:19:43,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:43,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211177107] [2024-10-11 21:19:43,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501367608] [2024-10-11 21:19:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501367608] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:43,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-11 21:19:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832460674] [2024-10-11 21:19:43,654 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:43,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 21:19:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 21:19:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:19:43,656 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 17 states, 15 states have (on average 3.6) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 21:19:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:44,368 INFO L93 Difference]: Finished difference Result 291 states and 325 transitions. [2024-10-11 21:19:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 21:19:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 70 [2024-10-11 21:19:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:44,370 INFO L225 Difference]: With dead ends: 291 [2024-10-11 21:19:44,371 INFO L226 Difference]: Without dead ends: 290 [2024-10-11 21:19:44,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 21:19:44,372 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 245 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:44,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1459 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-10-11 21:19:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 251. [2024-10-11 21:19:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 181 states have (on average 1.4033149171270718) internal successors, (254), 224 states have internal predecessors, (254), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 300 transitions. [2024-10-11 21:19:44,385 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 300 transitions. Word has length 70 [2024-10-11 21:19:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:44,386 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 300 transitions. [2024-10-11 21:19:44,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 21:19:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 300 transitions. [2024-10-11 21:19:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 21:19:44,387 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:44,387 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:44,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 21:19:44,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:44,592 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:44,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash 603475053, now seen corresponding path program 1 times [2024-10-11 21:19:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232433971] [2024-10-11 21:19:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917982368] [2024-10-11 21:19:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:44,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:44,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 21:19:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 21:19:44,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:44,730 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:44,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:44,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232433971] [2024-10-11 21:19:44,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917982368] [2024-10-11 21:19:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917982368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:44,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:44,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085689789] [2024-10-11 21:19:44,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:44,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:44,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:44,851 INFO L87 Difference]: Start difference. First operand 251 states and 300 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,049 INFO L93 Difference]: Finished difference Result 276 states and 324 transitions. [2024-10-11 21:19:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2024-10-11 21:19:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,051 INFO L225 Difference]: With dead ends: 276 [2024-10-11 21:19:45,051 INFO L226 Difference]: Without dead ends: 275 [2024-10-11 21:19:45,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:45,052 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 102 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 394 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 133 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-10-11 21:19:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 253. [2024-10-11 21:19:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.3989071038251366) internal successors, (256), 225 states have internal predecessors, (256), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 302 transitions. [2024-10-11 21:19:45,066 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 302 transitions. Word has length 71 [2024-10-11 21:19:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,066 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 302 transitions. [2024-10-11 21:19:45,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 302 transitions. [2024-10-11 21:19:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 21:19:45,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,069 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 21:19:45,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 21:19:45,269 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:45,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1527857596, now seen corresponding path program 1 times [2024-10-11 21:19:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:45,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713917343] [2024-10-11 21:19:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:45,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938899299] [2024-10-11 21:19:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:45,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:45,290 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:45,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 21:19:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:19:45,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:45,406 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:45,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:45,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713917343] [2024-10-11 21:19:45,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938899299] [2024-10-11 21:19:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938899299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:45,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:45,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322781467] [2024-10-11 21:19:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:45,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:45,505 INFO L87 Difference]: Start difference. First operand 253 states and 302 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,693 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2024-10-11 21:19:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:45,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-10-11 21:19:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,696 INFO L225 Difference]: With dead ends: 275 [2024-10-11 21:19:45,696 INFO L226 Difference]: Without dead ends: 274 [2024-10-11 21:19:45,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:45,697 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 100 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 396 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 131 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-10-11 21:19:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 254. [2024-10-11 21:19:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 184 states have (on average 1.3967391304347827) internal successors, (257), 226 states have internal predecessors, (257), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 303 transitions. [2024-10-11 21:19:45,720 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 303 transitions. Word has length 72 [2024-10-11 21:19:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,721 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 303 transitions. [2024-10-11 21:19:45,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 303 transitions. [2024-10-11 21:19:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 21:19:45,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,723 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 21:19:45,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 21:19:45,923 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:45,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 118945359, now seen corresponding path program 1 times [2024-10-11 21:19:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529506880] [2024-10-11 21:19:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 21:19:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:19:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529506880] [2024-10-11 21:19:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529506880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:46,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:46,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:46,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965986875] [2024-10-11 21:19:46,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:46,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:46,073 INFO L87 Difference]: Start difference. First operand 254 states and 303 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:46,296 INFO L93 Difference]: Finished difference Result 268 states and 322 transitions. [2024-10-11 21:19:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-10-11 21:19:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:46,298 INFO L225 Difference]: With dead ends: 268 [2024-10-11 21:19:46,298 INFO L226 Difference]: Without dead ends: 266 [2024-10-11 21:19:46,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:46,299 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 88 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:46,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 278 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-10-11 21:19:46,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 256. [2024-10-11 21:19:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 186 states have (on average 1.39247311827957) internal successors, (259), 228 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2024-10-11 21:19:46,317 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 73 [2024-10-11 21:19:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:46,317 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2024-10-11 21:19:46,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2024-10-11 21:19:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 21:19:46,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:46,319 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:46,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 21:19:46,319 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:46,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1657622479, now seen corresponding path program 1 times [2024-10-11 21:19:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:46,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181285039] [2024-10-11 21:19:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:46,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016228491] [2024-10-11 21:19:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:46,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:46,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 21:19:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 21:19:46,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:46,495 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:46,500 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:46,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:46,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181285039] [2024-10-11 21:19:46,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016228491] [2024-10-11 21:19:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016228491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:46,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:46,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058405846] [2024-10-11 21:19:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:46,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:46,798 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:47,088 INFO L93 Difference]: Finished difference Result 272 states and 320 transitions. [2024-10-11 21:19:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2024-10-11 21:19:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:47,089 INFO L225 Difference]: With dead ends: 272 [2024-10-11 21:19:47,089 INFO L226 Difference]: Without dead ends: 270 [2024-10-11 21:19:47,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:47,090 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 91 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:47,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 440 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 206 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-11 21:19:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2024-10-11 21:19:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.3882978723404256) internal successors, (261), 230 states have internal predecessors, (261), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2024-10-11 21:19:47,105 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 75 [2024-10-11 21:19:47,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:47,105 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2024-10-11 21:19:47,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:47,105 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2024-10-11 21:19:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 21:19:47,106 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:47,106 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:47,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:47,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:47,307 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:47,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 915702717, now seen corresponding path program 1 times [2024-10-11 21:19:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308430597] [2024-10-11 21:19:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:47,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877667918] [2024-10-11 21:19:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:47,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:47,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:47,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:47,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 21:19:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:47,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-11 21:19:47,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:47,478 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 1 [2024-10-11 21:19:47,495 INFO L378 Elim1Store]: Elim1 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 [2024-10-11 21:19:47,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2024-10-11 21:19:47,804 INFO L378 Elim1Store]: Elim1 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 22 treesize of output 10 [2024-10-11 21:19:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 29 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:19:47,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308430597] [2024-10-11 21:19:47,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877667918] [2024-10-11 21:19:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877667918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:47,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-10-11 21:19:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987204739] [2024-10-11 21:19:47,916 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:47,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 21:19:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 21:19:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:19:47,917 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 21:19:51,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:56,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:56,548 INFO L93 Difference]: Finished difference Result 272 states and 321 transitions. [2024-10-11 21:19:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 21:19:56,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 77 [2024-10-11 21:19:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:56,550 INFO L225 Difference]: With dead ends: 272 [2024-10-11 21:19:56,550 INFO L226 Difference]: Without dead ends: 270 [2024-10-11 21:19:56,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-10-11 21:19:56,551 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 264 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:56,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1280 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 684 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-10-11 21:19:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-11 21:19:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2024-10-11 21:19:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 229 states have internal predecessors, (257), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-10-11 21:19:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 305 transitions. [2024-10-11 21:19:56,564 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 305 transitions. Word has length 77 [2024-10-11 21:19:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:56,565 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 305 transitions. [2024-10-11 21:19:56,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 21:19:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 305 transitions. [2024-10-11 21:19:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 21:19:56,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:56,566 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:56,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 21:19:56,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:56,771 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:56,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 457669139, now seen corresponding path program 1 times [2024-10-11 21:19:56,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:56,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624169096] [2024-10-11 21:19:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:56,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 21:19:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:19:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:56,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624169096] [2024-10-11 21:19:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624169096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:56,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:56,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:56,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658251968] [2024-10-11 21:19:56,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:56,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:56,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:56,917 INFO L87 Difference]: Start difference. First operand 258 states and 305 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:57,045 INFO L93 Difference]: Finished difference Result 266 states and 316 transitions. [2024-10-11 21:19:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:57,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-10-11 21:19:57,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:57,047 INFO L225 Difference]: With dead ends: 266 [2024-10-11 21:19:57,047 INFO L226 Difference]: Without dead ends: 264 [2024-10-11 21:19:57,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:57,048 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 75 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:57,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 287 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-11 21:19:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2024-10-11 21:19:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 191 states have (on average 1.356020942408377) internal successors, (259), 231 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-10-11 21:19:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 307 transitions. [2024-10-11 21:19:57,061 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 307 transitions. Word has length 77 [2024-10-11 21:19:57,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:57,061 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 307 transitions. [2024-10-11 21:19:57,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 307 transitions. [2024-10-11 21:19:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 21:19:57,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:57,062 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:57,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-11 21:19:57,062 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:57,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1677986784, now seen corresponding path program 1 times [2024-10-11 21:19:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875521610] [2024-10-11 21:19:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:57,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371636890] [2024-10-11 21:19:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:57,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:57,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:57,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 21:19:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:57,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-11 21:19:57,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:57,231 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:57,236 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-10-11 21:19:57,899 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-10-11 21:19:57,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-10-11 21:19:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:58,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875521610] [2024-10-11 21:19:58,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371636890] [2024-10-11 21:19:58,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371636890] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:58,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:58,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-10-11 21:19:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425261182] [2024-10-11 21:19:58,454 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:58,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 21:19:58,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 21:19:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-10-11 21:19:58,455 INFO L87 Difference]: Start difference. First operand 260 states and 307 transitions. Second operand has 22 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 6 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:19:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:59,744 INFO L93 Difference]: Finished difference Result 333 states and 367 transitions. [2024-10-11 21:19:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 21:19:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 6 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 78 [2024-10-11 21:19:59,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:59,746 INFO L225 Difference]: With dead ends: 333 [2024-10-11 21:19:59,746 INFO L226 Difference]: Without dead ends: 332 [2024-10-11 21:19:59,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=230, Invalid=1662, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 21:19:59,747 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 264 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:59,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1532 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 21:19:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-11 21:19:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 278. [2024-10-11 21:19:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 206 states have (on average 1.3737864077669903) internal successors, (283), 246 states have internal predecessors, (283), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-10-11 21:19:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 335 transitions. [2024-10-11 21:19:59,764 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 335 transitions. Word has length 78 [2024-10-11 21:19:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:59,766 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 335 transitions. [2024-10-11 21:19:59,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 6 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:19:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 335 transitions. [2024-10-11 21:19:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 21:19:59,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:59,767 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:59,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 21:19:59,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 21:19:59,967 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-11 21:19:59,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -477982689, now seen corresponding path program 1 times [2024-10-11 21:19:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137801545] [2024-10-11 21:19:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:20:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:20:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:20:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:20:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-11 21:20:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:20:00,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:20:00,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137801545] [2024-10-11 21:20:00,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137801545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:20:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940056746] [2024-10-11 21:20:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:00,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:20:00,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:20:00,424 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:20:00,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 21:20:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:00,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 21:20:00,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:20:00,573 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 1 [2024-10-11 21:20:00,576 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 1 [2024-10-11 21:20:00,634 INFO L378 Elim1Store]: Elim1 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 [2024-10-11 21:20:01,132 INFO L378 Elim1Store]: Elim1 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 17 treesize of output 9 [2024-10-11 21:20:01,209 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-10-11 21:20:01,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-10-11 21:20:01,360 INFO L378 Elim1Store]: Elim1 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 [2024-10-11 21:20:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:20:01,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:20:01,677 INFO L378 Elim1Store]: Elim1 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 30 treesize of output 22 [2024-10-11 21:20:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 21:20:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940056746] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:20:01,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:20:01,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 13] total 33 [2024-10-11 21:20:01,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212916853] [2024-10-11 21:20:01,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:20:01,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 21:20:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:20:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 21:20:01,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:20:01,761 INFO L87 Difference]: Start difference. First operand 278 states and 335 transitions. Second operand has 34 states, 30 states have (on average 5.133333333333334) internal successors, (154), 28 states have internal predecessors, (154), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-11 21:20:05,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:10,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:14,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:19,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:23,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:27,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:31,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:35,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:39,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:43,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]