./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_ps4-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:03:35,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:03:35,420 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:03:35,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:03:35,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:03:35,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:03:35,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:03:35,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:03:35,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:03:35,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:03:35,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:03:35,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:03:35,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:03:35,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:03:35,450 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:03:35,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:03:35,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:03:35,451 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:03:35,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:03:35,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:03:35,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:03:35,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:03:35,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:03:35,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:03:35,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:03:35,456 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:03:35,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:03:35,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:03:35,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:03:35,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:03:35,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:03:35,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:03:35,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:03:35,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:03:35,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:03:35,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:03:35,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:03:35,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:03:35,462 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 [2024-10-13 14:03:35,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:03:35,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:03:35,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:03:35,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:03:35,763 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:03:35,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-10-13 14:03:37,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:03:37,208 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:03:37,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-10-13 14:03:37,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77438dc5/ecedbb48a3d040aca224e8e3d2c56a51/FLAG338c01437 [2024-10-13 14:03:37,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77438dc5/ecedbb48a3d040aca224e8e3d2c56a51 [2024-10-13 14:03:37,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:03:37,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:03:37,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:03:37,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:03:37,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:03:37,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69029768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37, skipping insertion in model container [2024-10-13 14:03:37,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:03:37,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:03:37,770 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:03:37,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:03:37,799 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:03:37,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37 WrapperNode [2024-10-13 14:03:37,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:03:37,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:03:37,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:03:37,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:03:37,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,826 INFO L138 Inliner]: procedures = 16, calls = 64, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-10-13 14:03:37,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:03:37,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:03:37,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:03:37,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:03:37,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,849 INFO L175 MemorySlicer]: Split 41 memory accesses to 5 slices as follows [2, 3, 27, 5, 4]. 66 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]. [2024-10-13 14:03:37,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:03:37,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:03:37,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:03:37,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:03:37,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (1/1) ... [2024-10-13 14:03:37,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:03:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:37,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 14:03:37,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 14:03:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:03:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:03:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:03:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:03:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:03:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 14:03:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:03:37,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-10-13 14:03:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 14:03:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 14:03:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:03:38,034 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:03:38,037 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:03:39,004 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-10-13 14:03:39,004 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:03:39,042 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:03:39,042 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 14:03:39,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:03:39 BoogieIcfgContainer [2024-10-13 14:03:39,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:03:39,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:03:39,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:03:39,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:03:39,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:03:37" (1/3) ... [2024-10-13 14:03:39,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748d5240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:03:39, skipping insertion in model container [2024-10-13 14:03:39,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:37" (2/3) ... [2024-10-13 14:03:39,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748d5240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:03:39, skipping insertion in model container [2024-10-13 14:03:39,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:03:39" (3/3) ... [2024-10-13 14:03:39,052 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4-ll.c [2024-10-13 14:03:39,066 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:03:39,066 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-10-13 14:03:39,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:03:39,127 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;@627e575c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:03:39,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-13 14:03:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 72 states have (on average 1.875) internal successors, (135), 133 states have internal predecessors, (135), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 14:03:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-13 14:03:39,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:39,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 14:03:39,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:39,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash 190432111, now seen corresponding path program 1 times [2024-10-13 14:03:39,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72139036] [2024-10-13 14:03:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:39,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72139036] [2024-10-13 14:03:39,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72139036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927397766] [2024-10-13 14:03:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:39,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:39,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:39,816 INFO L87 Difference]: Start difference. First operand has 140 states, 72 states have (on average 1.875) internal successors, (135), 133 states have internal predecessors, (135), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-10-13 14:03:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:40,305 INFO L93 Difference]: Finished difference Result 362 states and 384 transitions. [2024-10-13 14:03:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:40,307 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 [2024-10-13 14:03:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:40,317 INFO L225 Difference]: With dead ends: 362 [2024-10-13 14:03:40,317 INFO L226 Difference]: Without dead ends: 221 [2024-10-13 14:03:40,321 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 [2024-10-13 14:03:40,324 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 182 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:40,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 617 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:03:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-13 14:03:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 166. [2024-10-13 14:03:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.8265306122448979) internal successors, (179), 158 states have internal predecessors, (179), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2024-10-13 14:03:40,381 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 5 [2024-10-13 14:03:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:40,381 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2024-10-13 14:03:40,381 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) [2024-10-13 14:03:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2024-10-13 14:03:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-13 14:03:40,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:40,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:40,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 14:03:40,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:40,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1678331695, now seen corresponding path program 1 times [2024-10-13 14:03:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800438072] [2024-10-13 14:03:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:40,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823947051] [2024-10-13 14:03:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:40,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:40,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:40,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 14:03:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:40,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:03:40,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:40,531 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 [2024-10-13 14:03:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:40,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:40,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800438072] [2024-10-13 14:03:40,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823947051] [2024-10-13 14:03:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823947051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:40,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528335168] [2024-10-13 14:03:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:40,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:40,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:40,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:40,579 INFO L87 Difference]: Start difference. First operand 166 states and 190 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-10-13 14:03:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:41,049 INFO L93 Difference]: Finished difference Result 245 states and 250 transitions. [2024-10-13 14:03:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2024-10-13 14:03:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:41,051 INFO L225 Difference]: With dead ends: 245 [2024-10-13 14:03:41,053 INFO L226 Difference]: Without dead ends: 239 [2024-10-13 14:03:41,053 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 [2024-10-13 14:03:41,054 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 172 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:41,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 527 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:03:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-13 14:03:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 166. [2024-10-13 14:03:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7653061224489797) internal successors, (173), 158 states have internal predecessors, (173), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2024-10-13 14:03:41,074 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 7 [2024-10-13 14:03:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:41,074 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2024-10-13 14:03:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-10-13 14:03:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2024-10-13 14:03:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-13 14:03:41,075 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:41,075 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:41,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 14:03:41,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:41,277 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:41,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2072340233, now seen corresponding path program 1 times [2024-10-13 14:03:41,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545819111] [2024-10-13 14:03:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:41,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:41,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545819111] [2024-10-13 14:03:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545819111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:41,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:41,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:41,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856960383] [2024-10-13 14:03:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:41,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:41,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:41,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:41,684 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-10-13 14:03:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:42,401 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2024-10-13 14:03:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 13 [2024-10-13 14:03:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:42,403 INFO L225 Difference]: With dead ends: 215 [2024-10-13 14:03:42,403 INFO L226 Difference]: Without dead ends: 214 [2024-10-13 14:03:42,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:42,408 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 154 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:42,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 707 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 14:03:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-10-13 14:03:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2024-10-13 14:03:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7551020408163265) internal successors, (172), 158 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2024-10-13 14:03:42,423 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 13 [2024-10-13 14:03:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:42,423 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2024-10-13 14:03:42,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-10-13 14:03:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2024-10-13 14:03:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 14:03:42,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:42,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:42,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 14:03:42,424 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:42,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 181962338, now seen corresponding path program 1 times [2024-10-13 14:03:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056057476] [2024-10-13 14:03:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:42,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537006474] [2024-10-13 14:03:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:42,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:42,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:42,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:42,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 14:03:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:42,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 14:03:42,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:42,504 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 [2024-10-13 14:03:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:42,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:42,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056057476] [2024-10-13 14:03:42,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537006474] [2024-10-13 14:03:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537006474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:42,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:42,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:42,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123076780] [2024-10-13 14:03:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:42,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:42,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:42,563 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-10-13 14:03:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:42,832 INFO L93 Difference]: Finished difference Result 238 states and 243 transitions. [2024-10-13 14:03:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:42,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 14 [2024-10-13 14:03:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:42,834 INFO L225 Difference]: With dead ends: 238 [2024-10-13 14:03:42,834 INFO L226 Difference]: Without dead ends: 237 [2024-10-13 14:03:42,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:42,835 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 182 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:42,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 546 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-13 14:03:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 166. [2024-10-13 14:03:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7448979591836735) internal successors, (171), 158 states have internal predecessors, (171), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 182 transitions. [2024-10-13 14:03:42,842 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 182 transitions. Word has length 14 [2024-10-13 14:03:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:42,842 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 182 transitions. [2024-10-13 14:03:42,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-10-13 14:03:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 182 transitions. [2024-10-13 14:03:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-13 14:03:42,843 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:42,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:42,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 14:03:43,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-13 14:03:43,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:43,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1345865305, now seen corresponding path program 1 times [2024-10-13 14:03:43,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92059893] [2024-10-13 14:03:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:43,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:43,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92059893] [2024-10-13 14:03:43,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92059893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:43,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:43,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422243696] [2024-10-13 14:03:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:43,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:43,205 INFO L87 Difference]: Start difference. First operand 166 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-10-13 14:03:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:43,416 INFO L93 Difference]: Finished difference Result 237 states and 242 transitions. [2024-10-13 14:03:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2024-10-13 14:03:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:43,417 INFO L225 Difference]: With dead ends: 237 [2024-10-13 14:03:43,417 INFO L226 Difference]: Without dead ends: 231 [2024-10-13 14:03:43,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:43,418 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 134 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:43,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 534 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-13 14:03:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 166. [2024-10-13 14:03:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.683673469387755) internal successors, (165), 158 states have internal predecessors, (165), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2024-10-13 14:03:43,423 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 15 [2024-10-13 14:03:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:43,424 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2024-10-13 14:03:43,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-10-13 14:03:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2024-10-13 14:03:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:03:43,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:43,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:43,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 14:03:43,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:43,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2063494783, now seen corresponding path program 1 times [2024-10-13 14:03:43,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:43,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056057177] [2024-10-13 14:03:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:43,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862706916] [2024-10-13 14:03:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:43,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:43,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:43,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 14:03:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:43,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 14:03:43,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:43,507 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 [2024-10-13 14:03:43,510 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 [2024-10-13 14:03:43,539 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 [2024-10-13 14:03:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:44,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:44,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:44,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056057177] [2024-10-13 14:03:44,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:44,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862706916] [2024-10-13 14:03:44,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862706916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:44,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:44,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022580578] [2024-10-13 14:03:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:44,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:44,274 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-10-13 14:03:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:45,729 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2024-10-13 14:03:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 21 [2024-10-13 14:03:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:45,730 INFO L225 Difference]: With dead ends: 195 [2024-10-13 14:03:45,730 INFO L226 Difference]: Without dead ends: 194 [2024-10-13 14:03:45,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:45,731 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 116 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:45,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 695 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 14:03:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-10-13 14:03:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 166. [2024-10-13 14:03:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6734693877551021) internal successors, (164), 158 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2024-10-13 14:03:45,736 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 21 [2024-10-13 14:03:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:45,736 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2024-10-13 14:03:45,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-10-13 14:03:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2024-10-13 14:03:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 14:03:45,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:45,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:45,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 14:03:45,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:45,942 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:45,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash -456171030, now seen corresponding path program 1 times [2024-10-13 14:03:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:45,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279347298] [2024-10-13 14:03:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675709897] [2024-10-13 14:03:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:45,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:45,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:45,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 14:03:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:46,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 14:03:46,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:46,044 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 [2024-10-13 14:03:46,049 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 [2024-10-13 14:03:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:46,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:46,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279347298] [2024-10-13 14:03:46,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675709897] [2024-10-13 14:03:46,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675709897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:46,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:46,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:46,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482067274] [2024-10-13 14:03:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:46,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:46,176 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-10-13 14:03:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:46,359 INFO L93 Difference]: Finished difference Result 194 states and 199 transitions. [2024-10-13 14:03:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:46,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 22 [2024-10-13 14:03:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:46,360 INFO L225 Difference]: With dead ends: 194 [2024-10-13 14:03:46,360 INFO L226 Difference]: Without dead ends: 193 [2024-10-13 14:03:46,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:46,361 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 119 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:46,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 627 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:46,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-13 14:03:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 166. [2024-10-13 14:03:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.663265306122449) internal successors, (163), 158 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 174 transitions. [2024-10-13 14:03:46,365 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 174 transitions. Word has length 22 [2024-10-13 14:03:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:46,366 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 174 transitions. [2024-10-13 14:03:46,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-10-13 14:03:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 174 transitions. [2024-10-13 14:03:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 14:03:46,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:46,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:46,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 14:03:46,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:46,567 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:46,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1256399903, now seen corresponding path program 1 times [2024-10-13 14:03:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:46,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680665984] [2024-10-13 14:03:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061556691] [2024-10-13 14:03:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:46,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:46,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:46,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 14:03:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:46,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:03:46,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:46,659 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 [2024-10-13 14:03:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:46,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680665984] [2024-10-13 14:03:46,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061556691] [2024-10-13 14:03:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061556691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:46,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:46,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412733956] [2024-10-13 14:03:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:46,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:46,697 INFO L87 Difference]: Start difference. First operand 166 states and 174 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-10-13 14:03:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:46,802 INFO L93 Difference]: Finished difference Result 229 states and 234 transitions. [2024-10-13 14:03:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:46,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23 [2024-10-13 14:03:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:46,803 INFO L225 Difference]: With dead ends: 229 [2024-10-13 14:03:46,803 INFO L226 Difference]: Without dead ends: 228 [2024-10-13 14:03:46,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:46,804 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 110 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:46,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 551 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-13 14:03:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 166. [2024-10-13 14:03:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.653061224489796) internal successors, (162), 158 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 173 transitions. [2024-10-13 14:03:46,809 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 173 transitions. Word has length 23 [2024-10-13 14:03:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:46,809 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 173 transitions. [2024-10-13 14:03:46,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-10-13 14:03:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 173 transitions. [2024-10-13 14:03:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-13 14:03:46,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:46,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:46,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:47,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:47,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:47,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -293691188, now seen corresponding path program 1 times [2024-10-13 14:03:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:47,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726410530] [2024-10-13 14:03:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:47,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716904171] [2024-10-13 14:03:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:47,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:47,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:47,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:47,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 14:03:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:47,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:03:47,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:47,118 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 [2024-10-13 14:03:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:47,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726410530] [2024-10-13 14:03:47,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716904171] [2024-10-13 14:03:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716904171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:47,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:47,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:47,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481413191] [2024-10-13 14:03:47,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:47,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:47,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:47,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:47,183 INFO L87 Difference]: Start difference. First operand 166 states and 173 transitions. Second operand has 6 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-10-13 14:03:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:47,285 INFO L93 Difference]: Finished difference Result 228 states and 233 transitions. [2024-10-13 14:03:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:47,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 24 [2024-10-13 14:03:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:47,286 INFO L225 Difference]: With dead ends: 228 [2024-10-13 14:03:47,286 INFO L226 Difference]: Without dead ends: 227 [2024-10-13 14:03:47,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:47,287 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 107 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:47,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 553 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-13 14:03:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 166. [2024-10-13 14:03:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6428571428571428) internal successors, (161), 158 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2024-10-13 14:03:47,291 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 24 [2024-10-13 14:03:47,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:47,309 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2024-10-13 14:03:47,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-10-13 14:03:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2024-10-13 14:03:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 14:03:47,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:47,310 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:47,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 14:03:47,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:47,511 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:47,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash -514492093, now seen corresponding path program 1 times [2024-10-13 14:03:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968647373] [2024-10-13 14:03:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705324980] [2024-10-13 14:03:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:47,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:47,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:47,537 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:47,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 14:03:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:47,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 14:03:47,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:47,651 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 [2024-10-13 14:03:47,688 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 [2024-10-13 14:03:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:47,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:47,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968647373] [2024-10-13 14:03:47,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705324980] [2024-10-13 14:03:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705324980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800867529] [2024-10-13 14:03:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:47,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:47,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:47,880 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2024-10-13 14:03:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:48,428 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2024-10-13 14:03:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:48,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 25 [2024-10-13 14:03:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:48,429 INFO L225 Difference]: With dead ends: 227 [2024-10-13 14:03:48,429 INFO L226 Difference]: Without dead ends: 226 [2024-10-13 14:03:48,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:48,430 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 109 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:48,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 545 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:03:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-13 14:03:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 166. [2024-10-13 14:03:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6326530612244898) internal successors, (160), 158 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2024-10-13 14:03:48,436 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 25 [2024-10-13 14:03:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:48,436 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2024-10-13 14:03:48,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2024-10-13 14:03:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2024-10-13 14:03:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-13 14:03:48,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:48,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:48,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 14:03:48,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:48,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:48,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1230614446, now seen corresponding path program 1 times [2024-10-13 14:03:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893995020] [2024-10-13 14:03:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985116227] [2024-10-13 14:03:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:48,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:48,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 14:03:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:48,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 14:03:48,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:48,728 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 11 treesize of output 7 [2024-10-13 14:03:48,743 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 [2024-10-13 14:03:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:48,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893995020] [2024-10-13 14:03:48,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985116227] [2024-10-13 14:03:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985116227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:48,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:48,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310954260] [2024-10-13 14:03:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:48,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:48,843 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-10-13 14:03:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:49,207 INFO L93 Difference]: Finished difference Result 226 states and 231 transitions. [2024-10-13 14:03:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 26 [2024-10-13 14:03:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:49,208 INFO L225 Difference]: With dead ends: 226 [2024-10-13 14:03:49,208 INFO L226 Difference]: Without dead ends: 225 [2024-10-13 14:03:49,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:49,209 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 102 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:49,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 618 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:03:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-13 14:03:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 166. [2024-10-13 14:03:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 158 states have internal predecessors, (159), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2024-10-13 14:03:49,213 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 26 [2024-10-13 14:03:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:49,213 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2024-10-13 14:03:49,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-10-13 14:03:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2024-10-13 14:03:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-13 14:03:49,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:49,214 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:49,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:49,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 14:03:49,415 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:49,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1787576623, now seen corresponding path program 1 times [2024-10-13 14:03:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:49,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131044245] [2024-10-13 14:03:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:49,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 14:03:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131044245] [2024-10-13 14:03:49,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131044245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:49,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29774240] [2024-10-13 14:03:49,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:49,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:49,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:49,611 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2024-10-13 14:03:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:49,675 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-10-13 14:03:49,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:49,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 34 [2024-10-13 14:03:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:49,677 INFO L225 Difference]: With dead ends: 229 [2024-10-13 14:03:49,677 INFO L226 Difference]: Without dead ends: 228 [2024-10-13 14:03:49,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:49,677 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 93 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:49,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 666 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:03:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-13 14:03:49,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2024-10-13 14:03:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-10-13 14:03:49,682 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 34 [2024-10-13 14:03:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:49,682 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-10-13 14:03:49,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2024-10-13 14:03:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-10-13 14:03:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-13 14:03:49,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:49,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:49,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 14:03:49,683 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:49,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -419699380, now seen corresponding path program 1 times [2024-10-13 14:03:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80134842] [2024-10-13 14:03:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:49,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 14:03:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80134842] [2024-10-13 14:03:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80134842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:49,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:49,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770059307] [2024-10-13 14:03:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:49,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:49,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:49,811 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-10-13 14:03:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:49,921 INFO L93 Difference]: Finished difference Result 228 states and 232 transitions. [2024-10-13 14:03:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 35 [2024-10-13 14:03:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:49,923 INFO L225 Difference]: With dead ends: 228 [2024-10-13 14:03:49,923 INFO L226 Difference]: Without dead ends: 227 [2024-10-13 14:03:49,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:49,923 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 90 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:49,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 668 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-13 14:03:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 168. [2024-10-13 14:03:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.61) internal successors, (161), 160 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2024-10-13 14:03:49,943 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 35 [2024-10-13 14:03:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:49,944 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2024-10-13 14:03:49,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-10-13 14:03:49,944 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2024-10-13 14:03:49,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-13 14:03:49,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:49,945 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:49,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 14:03:49,946 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:49,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:49,946 INFO L85 PathProgramCache]: Analyzing trace with hash -125778735, now seen corresponding path program 1 times [2024-10-13 14:03:49,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036691661] [2024-10-13 14:03:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:49,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:50,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 14:03:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:50,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:50,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036691661] [2024-10-13 14:03:50,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036691661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:50,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:50,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:50,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973829937] [2024-10-13 14:03:50,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:50,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:50,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:50,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:50,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:50,120 INFO L87 Difference]: Start difference. First operand 168 states and 172 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, (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) [2024-10-13 14:03:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:50,212 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-10-13 14:03:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:50,212 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, (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 36 [2024-10-13 14:03:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:50,213 INFO L225 Difference]: With dead ends: 223 [2024-10-13 14:03:50,213 INFO L226 Difference]: Without dead ends: 221 [2024-10-13 14:03:50,213 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 [2024-10-13 14:03:50,214 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 85 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:50,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 569 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-13 14:03:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2024-10-13 14:03:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 162 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:03:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2024-10-13 14:03:50,219 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 36 [2024-10-13 14:03:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:50,220 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2024-10-13 14:03:50,220 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, (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) [2024-10-13 14:03:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2024-10-13 14:03:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-13 14:03:50,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:50,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:50,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 14:03:50,221 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:50,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 395618041, now seen corresponding path program 1 times [2024-10-13 14:03:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:50,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372971946] [2024-10-13 14:03:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:50,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107021750] [2024-10-13 14:03:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:50,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:50,238 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:50,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 14:03:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:50,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 14:03:50,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:50,314 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 [2024-10-13 14:03:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:50,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:50,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372971946] [2024-10-13 14:03:50,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107021750] [2024-10-13 14:03:50,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107021750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:50,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916599675] [2024-10-13 14:03:50,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:50,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 14:03:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 14:03:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 14:03:50,357 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:50,519 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-10-13 14:03:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 14:03:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-10-13 14:03:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:50,521 INFO L225 Difference]: With dead ends: 223 [2024-10-13 14:03:50,522 INFO L226 Difference]: Without dead ends: 221 [2024-10-13 14:03:50,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:50,522 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 88 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:50,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 379 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-13 14:03:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2024-10-13 14:03:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.5754716981132075) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-13 14:03:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-10-13 14:03:50,527 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 37 [2024-10-13 14:03:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:50,527 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-10-13 14:03:50,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-10-13 14:03:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-13 14:03:50,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:50,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:50,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:50,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 14:03:50,729 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:50,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -614274957, now seen corresponding path program 1 times [2024-10-13 14:03:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119005541] [2024-10-13 14:03:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:50,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921594626] [2024-10-13 14:03:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:50,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:50,745 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:50,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 14:03:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:50,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 14:03:50,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:50,824 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 [2024-10-13 14:03:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:50,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:50,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119005541] [2024-10-13 14:03:50,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921594626] [2024-10-13 14:03:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921594626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:50,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:50,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969804386] [2024-10-13 14:03:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:50,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:50,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:50,912 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-10-13 14:03:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:51,052 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2024-10-13 14:03:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 38 [2024-10-13 14:03:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:51,054 INFO L225 Difference]: With dead ends: 240 [2024-10-13 14:03:51,054 INFO L226 Difference]: Without dead ends: 239 [2024-10-13 14:03:51,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:51,054 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 93 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:51,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 643 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-13 14:03:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 185. [2024-10-13 14:03:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 114 states have (on average 1.5701754385964912) internal successors, (179), 174 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2024-10-13 14:03:51,059 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 38 [2024-10-13 14:03:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:51,059 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2024-10-13 14:03:51,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-10-13 14:03:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2024-10-13 14:03:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-13 14:03:51,060 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:51,060 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:51,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 14:03:51,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 14:03:51,264 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:51,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2063150725, now seen corresponding path program 1 times [2024-10-13 14:03:51,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461462793] [2024-10-13 14:03:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685958549] [2024-10-13 14:03:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:51,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:51,296 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:51,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 14:03:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:51,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 14:03:51,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:51,375 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 [2024-10-13 14:03:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:51,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461462793] [2024-10-13 14:03:51,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685958549] [2024-10-13 14:03:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685958549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123601832] [2024-10-13 14:03:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:51,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 14:03:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 14:03:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 14:03:51,428 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:51,558 INFO L93 Difference]: Finished difference Result 226 states and 230 transitions. [2024-10-13 14:03:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 14:03:51,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-13 14:03:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:51,559 INFO L225 Difference]: With dead ends: 226 [2024-10-13 14:03:51,559 INFO L226 Difference]: Without dead ends: 225 [2024-10-13 14:03:51,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:51,560 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 81 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:51,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 374 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-13 14:03:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 185. [2024-10-13 14:03:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 114 states have (on average 1.5614035087719298) internal successors, (178), 174 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2024-10-13 14:03:51,564 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 39 [2024-10-13 14:03:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:51,565 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2024-10-13 14:03:51,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2024-10-13 14:03:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-13 14:03:51,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:51,565 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:51,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:51,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 14:03:51,770 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:51,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1862654320, now seen corresponding path program 1 times [2024-10-13 14:03:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383260381] [2024-10-13 14:03:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:51,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:51,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313088403] [2024-10-13 14:03:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:51,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:51,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:51,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 14:03:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:51,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 14:03:51,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:51,873 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 [2024-10-13 14:03:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:51,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:51,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383260381] [2024-10-13 14:03:51,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313088403] [2024-10-13 14:03:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313088403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:51,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:51,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:51,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940984244] [2024-10-13 14:03:51,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:51,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:51,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:51,951 INFO L87 Difference]: Start difference. First operand 185 states and 192 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2024-10-13 14:03:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:52,089 INFO L93 Difference]: Finished difference Result 239 states and 246 transitions. [2024-10-13 14:03:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:52,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 39 [2024-10-13 14:03:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:52,090 INFO L225 Difference]: With dead ends: 239 [2024-10-13 14:03:52,090 INFO L226 Difference]: Without dead ends: 238 [2024-10-13 14:03:52,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:52,091 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 138 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:52,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 576 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-13 14:03:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 186. [2024-10-13 14:03:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 115 states have (on average 1.5565217391304347) internal successors, (179), 175 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 193 transitions. [2024-10-13 14:03:52,096 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 193 transitions. Word has length 39 [2024-10-13 14:03:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:52,096 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 193 transitions. [2024-10-13 14:03:52,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2024-10-13 14:03:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 193 transitions. [2024-10-13 14:03:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 14:03:52,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:52,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:52,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 14:03:52,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 14:03:52,301 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:52,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash 466837007, now seen corresponding path program 1 times [2024-10-13 14:03:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393685371] [2024-10-13 14:03:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:52,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409245762] [2024-10-13 14:03:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:52,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:52,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:52,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:52,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 14:03:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:52,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 14:03:52,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:52,407 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 [2024-10-13 14:03:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:52,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:52,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:52,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393685371] [2024-10-13 14:03:52,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:52,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409245762] [2024-10-13 14:03:52,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409245762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:52,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:52,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:52,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516985566] [2024-10-13 14:03:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:52,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 14:03:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 14:03:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 14:03:52,466 INFO L87 Difference]: Start difference. First operand 186 states and 193 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:52,593 INFO L93 Difference]: Finished difference Result 226 states and 230 transitions. [2024-10-13 14:03:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 14:03:52,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-10-13 14:03:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:52,594 INFO L225 Difference]: With dead ends: 226 [2024-10-13 14:03:52,594 INFO L226 Difference]: Without dead ends: 225 [2024-10-13 14:03:52,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:52,595 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:52,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 376 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-13 14:03:52,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 186. [2024-10-13 14:03:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 115 states have (on average 1.5478260869565217) internal successors, (178), 175 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 192 transitions. [2024-10-13 14:03:52,599 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 192 transitions. Word has length 40 [2024-10-13 14:03:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:52,599 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 192 transitions. [2024-10-13 14:03:52,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 192 transitions. [2024-10-13 14:03:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 14:03:52,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:52,600 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:52,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 14:03:52,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:52,800 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_26_to_34_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:52,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1907708907, now seen corresponding path program 1 times [2024-10-13 14:03:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:52,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146799427] [2024-10-13 14:03:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:52,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204517909] [2024-10-13 14:03:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:52,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:52,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:52,815 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:52,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 14:03:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:52,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 14:03:52,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:52,900 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 [2024-10-13 14:03:52,970 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 23 treesize of output 3 [2024-10-13 14:03:53,001 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 29 treesize of output 13 [2024-10-13 14:03:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:53,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:53,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:53,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146799427] [2024-10-13 14:03:53,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:53,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204517909] [2024-10-13 14:03:53,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204517909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:53,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:53,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:03:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892711278] [2024-10-13 14:03:53,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:53,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 14:03:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:53,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 14:03:53,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:03:53,015 INFO L87 Difference]: Start difference. First operand 186 states and 192 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2024-10-13 14:03:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:53,213 INFO L93 Difference]: Finished difference Result 238 states and 244 transitions. [2024-10-13 14:03:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 14:03:53,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 40 [2024-10-13 14:03:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:53,214 INFO L225 Difference]: With dead ends: 238 [2024-10-13 14:03:53,214 INFO L226 Difference]: Without dead ends: 237 [2024-10-13 14:03:53,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:53,215 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 139 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:53,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 669 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-13 14:03:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 187. [2024-10-13 14:03:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 116 states have (on average 1.543103448275862) internal successors, (179), 176 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 193 transitions. [2024-10-13 14:03:53,219 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 193 transitions. Word has length 40 [2024-10-13 14:03:53,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:53,220 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 193 transitions. [2024-10-13 14:03:53,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2024-10-13 14:03:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 193 transitions. [2024-10-13 14:03:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 14:03:53,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:53,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:53,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 14:03:53,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:53,421 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:53,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1587045373, now seen corresponding path program 1 times [2024-10-13 14:03:53,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:53,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6438565] [2024-10-13 14:03:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:53,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:53,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790786406] [2024-10-13 14:03:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:53,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:53,441 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:53,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 14:03:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:53,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 14:03:53,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:53,523 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 [2024-10-13 14:03:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:53,583 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:53,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:53,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6438565] [2024-10-13 14:03:53,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:53,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790786406] [2024-10-13 14:03:53,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790786406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:53,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:53,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578780447] [2024-10-13 14:03:53,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:53,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:53,584 INFO L87 Difference]: Start difference. First operand 187 states and 193 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:53,751 INFO L93 Difference]: Finished difference Result 226 states and 230 transitions. [2024-10-13 14:03:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:53,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-10-13 14:03:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:53,752 INFO L225 Difference]: With dead ends: 226 [2024-10-13 14:03:53,752 INFO L226 Difference]: Without dead ends: 224 [2024-10-13 14:03:53,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:53,753 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 76 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:53,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 476 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-13 14:03:53,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 187. [2024-10-13 14:03:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 176 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2024-10-13 14:03:53,757 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 41 [2024-10-13 14:03:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:53,757 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2024-10-13 14:03:53,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2024-10-13 14:03:53,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 14:03:53,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:53,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:53,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 14:03:53,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:53,961 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_26_to_34_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:53,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash 990566194, now seen corresponding path program 1 times [2024-10-13 14:03:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157650058] [2024-10-13 14:03:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385096385] [2024-10-13 14:03:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:53,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:53,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:53,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:53,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 14:03:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:54,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 14:03:54,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:54,117 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 [2024-10-13 14:03:54,191 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 [2024-10-13 14:03:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:54,222 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:54,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157650058] [2024-10-13 14:03:54,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:54,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385096385] [2024-10-13 14:03:54,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385096385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:54,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:54,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:03:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886482851] [2024-10-13 14:03:54,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:54,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 14:03:54,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 14:03:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:03:54,224 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2024-10-13 14:03:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:54,461 INFO L93 Difference]: Finished difference Result 236 states and 241 transitions. [2024-10-13 14:03:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 14:03:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 41 [2024-10-13 14:03:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:54,464 INFO L225 Difference]: With dead ends: 236 [2024-10-13 14:03:54,464 INFO L226 Difference]: Without dead ends: 235 [2024-10-13 14:03:54,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:54,464 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 134 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:54,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 668 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-13 14:03:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 188. [2024-10-13 14:03:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.5213675213675213) internal successors, (178), 177 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2024-10-13 14:03:54,469 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 41 [2024-10-13 14:03:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:54,469 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 192 transitions. [2024-10-13 14:03:54,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2024-10-13 14:03:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 192 transitions. [2024-10-13 14:03:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-13 14:03:54,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:54,469 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:54,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:54,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 14:03:54,670 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:54,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 642781111, now seen corresponding path program 1 times [2024-10-13 14:03:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297319377] [2024-10-13 14:03:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:55,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 14:03:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:55,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297319377] [2024-10-13 14:03:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297319377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:55,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:55,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:55,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067939316] [2024-10-13 14:03:55,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:55,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:55,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:55,015 INFO L87 Difference]: Start difference. First operand 188 states and 192 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-10-13 14:03:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:55,462 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2024-10-13 14:03:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:55,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 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 42 [2024-10-13 14:03:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:55,464 INFO L225 Difference]: With dead ends: 193 [2024-10-13 14:03:55,464 INFO L226 Difference]: Without dead ends: 192 [2024-10-13 14:03:55,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:55,464 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 51 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:55,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 748 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:03:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-13 14:03:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2024-10-13 14:03:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 178 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2024-10-13 14:03:55,469 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 42 [2024-10-13 14:03:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:55,469 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2024-10-13 14:03:55,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-10-13 14:03:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2024-10-13 14:03:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-13 14:03:55,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:55,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:55,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 14:03:55,470 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_26_to_34_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:55,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1548621868, now seen corresponding path program 1 times [2024-10-13 14:03:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240021744] [2024-10-13 14:03:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:55,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 14:03:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:55,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:55,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240021744] [2024-10-13 14:03:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240021744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:55,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:55,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929874881] [2024-10-13 14:03:55,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:55,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:55,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:55,742 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-13 14:03:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:56,092 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2024-10-13 14:03:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:56,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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 43 [2024-10-13 14:03:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:56,093 INFO L225 Difference]: With dead ends: 192 [2024-10-13 14:03:56,093 INFO L226 Difference]: Without dead ends: 191 [2024-10-13 14:03:56,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:56,093 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 48 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:56,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 634 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:03:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-13 14:03:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-10-13 14:03:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 179 states have internal predecessors, (180), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:03:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 194 transitions. [2024-10-13 14:03:56,097 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 194 transitions. Word has length 43 [2024-10-13 14:03:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:56,098 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 194 transitions. [2024-10-13 14:03:56,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-13 14:03:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 194 transitions. [2024-10-13 14:03:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-13 14:03:56,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:56,098 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:56,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 14:03:56,099 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:03:56,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:56,099 INFO L85 PathProgramCache]: Analyzing trace with hash 644671347, now seen corresponding path program 1 times [2024-10-13 14:03:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:56,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863652710] [2024-10-13 14:03:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:56,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653726834] [2024-10-13 14:03:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:56,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:56,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:56,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:03:56,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 14:03:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:56,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-13 14:03:56,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:56,212 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 [2024-10-13 14:03:56,214 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 [2024-10-13 14:03:56,363 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 [2024-10-13 14:03:56,431 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 [2024-10-13 14:03:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:56,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:03:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:56,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:56,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863652710] [2024-10-13 14:03:56,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:56,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653726834] [2024-10-13 14:03:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653726834] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 14:03:56,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 14:03:56,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2024-10-13 14:03:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434580002] [2024-10-13 14:03:56,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 14:03:56,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 14:03:56,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 14:03:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-10-13 14:03:56,820 INFO L87 Difference]: Start difference. First operand 190 states and 194 transitions. Second operand has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:04:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:02,572 INFO L93 Difference]: Finished difference Result 382 states and 392 transitions. [2024-10-13 14:04:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 14:04:02,573 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-10-13 14:04:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:02,574 INFO L225 Difference]: With dead ends: 382 [2024-10-13 14:04:02,574 INFO L226 Difference]: Without dead ends: 377 [2024-10-13 14:04:02,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2024-10-13 14:04:02,575 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 621 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:02,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1811 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-13 14:04:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-10-13 14:04:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 264. [2024-10-13 14:04:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 185 states have (on average 1.6) internal successors, (296), 247 states have internal predecessors, (296), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 322 transitions. [2024-10-13 14:04:02,583 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 322 transitions. Word has length 47 [2024-10-13 14:04:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:02,584 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 322 transitions. [2024-10-13 14:04:02,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:04:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 322 transitions. [2024-10-13 14:04:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-13 14:04:02,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:02,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:02,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 14:04:02,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:02,793 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:02,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1610448195, now seen corresponding path program 1 times [2024-10-13 14:04:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645777127] [2024-10-13 14:04:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:02,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:04:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:02,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-13 14:04:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:02,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-13 14:04:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:04:02,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645777127] [2024-10-13 14:04:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645777127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:04:02,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:04:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:04:02,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369771095] [2024-10-13 14:04:02,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:04:02,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:04:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:02,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:04:02,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:04:02,898 INFO L87 Difference]: Start difference. First operand 264 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, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:04:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:03,288 INFO L93 Difference]: Finished difference Result 303 states and 366 transitions. [2024-10-13 14:04:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:04:03,288 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, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-10-13 14:04:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:03,289 INFO L225 Difference]: With dead ends: 303 [2024-10-13 14:04:03,291 INFO L226 Difference]: Without dead ends: 301 [2024-10-13 14:04:03,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:04:03,292 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 107 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:03,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 403 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:04:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-13 14:04:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 267. [2024-10-13 14:04:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 249 states have internal predecessors, (299), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 325 transitions. [2024-10-13 14:04:03,299 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 325 transitions. Word has length 49 [2024-10-13 14:04:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:03,299 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 325 transitions. [2024-10-13 14:04:03,299 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, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:04:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 325 transitions. [2024-10-13 14:04:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-13 14:04:03,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:03,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:03,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 14:04:03,300 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:03,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1053877205, now seen corresponding path program 1 times [2024-10-13 14:04:03,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:03,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165823927] [2024-10-13 14:04:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:03,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448773169] [2024-10-13 14:04:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:03,318 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 14:04:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:03,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 14:04:03,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:03,448 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 [2024-10-13 14:04:03,520 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 23 treesize of output 3 [2024-10-13 14:04:03,567 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 [2024-10-13 14:04:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:03,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:03,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165823927] [2024-10-13 14:04:03,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448773169] [2024-10-13 14:04:03,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448773169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:04:03,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:04:03,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-10-13 14:04:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875817869] [2024-10-13 14:04:03,933 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:03,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 14:04:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:03,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 14:04:03,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:04:03,934 INFO L87 Difference]: Start difference. First operand 267 states and 325 transitions. Second operand has 10 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:04,342 INFO L93 Difference]: Finished difference Result 330 states and 364 transitions. [2024-10-13 14:04:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 14:04:04,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-10-13 14:04:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:04,344 INFO L225 Difference]: With dead ends: 330 [2024-10-13 14:04:04,344 INFO L226 Difference]: Without dead ends: 329 [2024-10-13 14:04:04,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:04:04,345 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 214 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:04,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 889 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:04:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-13 14:04:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 267. [2024-10-13 14:04:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5851063829787233) internal successors, (298), 249 states have internal predecessors, (298), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 324 transitions. [2024-10-13 14:04:04,355 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 324 transitions. Word has length 49 [2024-10-13 14:04:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:04,355 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 324 transitions. [2024-10-13 14:04:04,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 324 transitions. [2024-10-13 14:04:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-13 14:04:04,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:04,356 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:04,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 14:04:04,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 14:04:04,561 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:04,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1689544904, now seen corresponding path program 1 times [2024-10-13 14:04:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:04,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277060935] [2024-10-13 14:04:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:04,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605127412] [2024-10-13 14:04:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:04,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:04,591 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:04,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 14:04:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:04,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-13 14:04:04,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:04,691 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 [2024-10-13 14:04:04,812 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 [2024-10-13 14:04:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:04,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:09,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277060935] [2024-10-13 14:04:09,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605127412] [2024-10-13 14:04:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605127412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:04:09,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:04:09,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-13 14:04:09,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664866755] [2024-10-13 14:04:09,873 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:09,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 14:04:09,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 14:04:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2024-10-13 14:04:09,874 INFO L87 Difference]: Start difference. First operand 267 states and 324 transitions. Second operand has 12 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:10,345 INFO L93 Difference]: Finished difference Result 329 states and 363 transitions. [2024-10-13 14:04:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 14:04:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2024-10-13 14:04:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:10,347 INFO L225 Difference]: With dead ends: 329 [2024-10-13 14:04:10,347 INFO L226 Difference]: Without dead ends: 328 [2024-10-13 14:04:10,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=84, Invalid=335, Unknown=1, NotChecked=0, Total=420 [2024-10-13 14:04:10,348 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 211 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:10,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1019 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:04:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-13 14:04:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 267. [2024-10-13 14:04:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5797872340425532) internal successors, (297), 249 states have internal predecessors, (297), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 323 transitions. [2024-10-13 14:04:10,355 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 323 transitions. Word has length 50 [2024-10-13 14:04:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:10,355 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 323 transitions. [2024-10-13 14:04:10,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 323 transitions. [2024-10-13 14:04:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-13 14:04:10,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:10,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:10,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-13 14:04:10,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:10,561 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:10,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1452487169, now seen corresponding path program 1 times [2024-10-13 14:04:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995695715] [2024-10-13 14:04:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:10,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236989567] [2024-10-13 14:04:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:10,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:10,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:10,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:10,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 14:04:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:10,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 14:04:10,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:10,678 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 [2024-10-13 14:04:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:10,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:04:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:10,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995695715] [2024-10-13 14:04:10,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:10,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236989567] [2024-10-13 14:04:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236989567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:04:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:04:10,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:04:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373244255] [2024-10-13 14:04:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:04:10,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:04:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:04:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:04:10,744 INFO L87 Difference]: Start difference. First operand 267 states and 323 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:04:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:11,000 INFO L93 Difference]: Finished difference Result 307 states and 362 transitions. [2024-10-13 14:04:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:04:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2024-10-13 14:04:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:11,002 INFO L225 Difference]: With dead ends: 307 [2024-10-13 14:04:11,002 INFO L226 Difference]: Without dead ends: 301 [2024-10-13 14:04:11,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:04:11,006 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 158 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:11,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 383 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 6 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:04:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-13 14:04:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 273. [2024-10-13 14:04:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.5618556701030928) internal successors, (303), 255 states have internal predecessors, (303), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 329 transitions. [2024-10-13 14:04:11,031 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 329 transitions. Word has length 51 [2024-10-13 14:04:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:11,032 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 329 transitions. [2024-10-13 14:04:11,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:04:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 329 transitions. [2024-10-13 14:04:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-13 14:04:11,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:11,033 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:11,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 14:04:11,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 14:04:11,234 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:11,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash -836284361, now seen corresponding path program 1 times [2024-10-13 14:04:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489284242] [2024-10-13 14:04:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276585605] [2024-10-13 14:04:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:11,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:11,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:11,254 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:11,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 14:04:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:11,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-13 14:04:11,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:11,359 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 [2024-10-13 14:04:11,466 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 [2024-10-13 14:04:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:11,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489284242] [2024-10-13 14:04:12,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276585605] [2024-10-13 14:04:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276585605] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:04:12,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:04:12,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 14:04:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371846723] [2024-10-13 14:04:12,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:12,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 14:04:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 14:04:12,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:04:12,424 INFO L87 Difference]: Start difference. First operand 273 states and 329 transitions. Second operand has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:12,765 INFO L93 Difference]: Finished difference Result 322 states and 356 transitions. [2024-10-13 14:04:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 14:04:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-10-13 14:04:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:12,767 INFO L225 Difference]: With dead ends: 322 [2024-10-13 14:04:12,767 INFO L226 Difference]: Without dead ends: 321 [2024-10-13 14:04:12,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-13 14:04:12,767 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 264 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:12,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 818 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:04:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-13 14:04:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 273. [2024-10-13 14:04:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.556701030927835) internal successors, (302), 255 states have internal predecessors, (302), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 328 transitions. [2024-10-13 14:04:12,774 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 328 transitions. Word has length 51 [2024-10-13 14:04:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:12,774 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 328 transitions. [2024-10-13 14:04:12,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 328 transitions. [2024-10-13 14:04:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-13 14:04:12,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:12,775 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:12,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 14:04:12,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:12,979 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:12,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash -155011302, now seen corresponding path program 1 times [2024-10-13 14:04:12,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:12,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366196176] [2024-10-13 14:04:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:12,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259945043] [2024-10-13 14:04:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:12,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:12,997 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:13,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 14:04:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:13,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 14:04:13,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:13,103 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 [2024-10-13 14:04:13,192 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 [2024-10-13 14:04:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:13,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366196176] [2024-10-13 14:04:14,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259945043] [2024-10-13 14:04:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259945043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:04:14,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:04:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 14:04:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689716403] [2024-10-13 14:04:14,418 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:14,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 14:04:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 14:04:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:04:14,419 INFO L87 Difference]: Start difference. First operand 273 states and 328 transitions. Second operand has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:15,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:15,125 INFO L93 Difference]: Finished difference Result 321 states and 355 transitions. [2024-10-13 14:04:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 14:04:15,125 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-10-13 14:04:15,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:15,126 INFO L225 Difference]: With dead ends: 321 [2024-10-13 14:04:15,127 INFO L226 Difference]: Without dead ends: 320 [2024-10-13 14:04:15,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-13 14:04:15,127 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 232 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:15,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1036 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:04:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-13 14:04:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 273. [2024-10-13 14:04:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.5515463917525774) internal successors, (301), 255 states have internal predecessors, (301), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 327 transitions. [2024-10-13 14:04:15,135 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 327 transitions. Word has length 52 [2024-10-13 14:04:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:15,135 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 327 transitions. [2024-10-13 14:04:15,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 327 transitions. [2024-10-13 14:04:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-13 14:04:15,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:15,136 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:15,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-13 14:04:15,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:15,340 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:15,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:15,340 INFO L85 PathProgramCache]: Analyzing trace with hash -510382951, now seen corresponding path program 1 times [2024-10-13 14:04:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134369097] [2024-10-13 14:04:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863178328] [2024-10-13 14:04:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:15,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:15,360 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:15,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 14:04:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:15,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-13 14:04:15,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:15,464 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 [2024-10-13 14:04:15,556 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 [2024-10-13 14:04:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:15,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:29,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134369097] [2024-10-13 14:04:29,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863178328] [2024-10-13 14:04:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863178328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:04:29,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:04:29,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-13 14:04:29,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559246992] [2024-10-13 14:04:29,254 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:29,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 14:04:29,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:29,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 14:04:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=384, Unknown=3, NotChecked=0, Total=462 [2024-10-13 14:04:29,255 INFO L87 Difference]: Start difference. First operand 273 states and 327 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:29,919 INFO L93 Difference]: Finished difference Result 320 states and 354 transitions. [2024-10-13 14:04:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 14:04:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-10-13 14:04:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:29,920 INFO L225 Difference]: With dead ends: 320 [2024-10-13 14:04:29,920 INFO L226 Difference]: Without dead ends: 319 [2024-10-13 14:04:29,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=146, Invalid=607, Unknown=3, NotChecked=0, Total=756 [2024-10-13 14:04:29,921 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 217 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:29,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1158 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:04:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-13 14:04:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 273. [2024-10-13 14:04:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.5463917525773196) internal successors, (300), 255 states have internal predecessors, (300), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 326 transitions. [2024-10-13 14:04:29,928 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 326 transitions. Word has length 53 [2024-10-13 14:04:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:29,928 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 326 transitions. [2024-10-13 14:04:29,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 326 transitions. [2024-10-13 14:04:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-13 14:04:29,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:29,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:29,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-13 14:04:30,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:30,133 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:30,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:30,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1357997820, now seen corresponding path program 1 times [2024-10-13 14:04:30,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:30,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792918433] [2024-10-13 14:04:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:30,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290455688] [2024-10-13 14:04:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:30,151 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:30,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 14:04:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:30,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-13 14:04:30,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:30,266 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 [2024-10-13 14:04:30,377 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 [2024-10-13 14:04:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:30,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792918433] [2024-10-13 14:04:35,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290455688] [2024-10-13 14:04:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290455688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:04:35,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:04:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-13 14:04:35,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456614539] [2024-10-13 14:04:35,748 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:35,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 14:04:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 14:04:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-10-13 14:04:35,749 INFO L87 Difference]: Start difference. First operand 273 states and 326 transitions. Second operand has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:04:36,732 INFO L93 Difference]: Finished difference Result 319 states and 353 transitions. [2024-10-13 14:04:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 14:04:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-10-13 14:04:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:04:36,733 INFO L225 Difference]: With dead ends: 319 [2024-10-13 14:04:36,733 INFO L226 Difference]: Without dead ends: 318 [2024-10-13 14:04:36,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2024-10-13 14:04:36,734 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 214 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:04:36,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1133 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:04:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-10-13 14:04:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 273. [2024-10-13 14:04:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 194 states have (on average 1.541237113402062) internal successors, (299), 255 states have internal predecessors, (299), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-10-13 14:04:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 325 transitions. [2024-10-13 14:04:36,743 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 325 transitions. Word has length 54 [2024-10-13 14:04:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:04:36,744 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 325 transitions. [2024-10-13 14:04:36,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:04:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 325 transitions. [2024-10-13 14:04:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 14:04:36,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:04:36,744 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:04:36,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-13 14:04:36,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:36,945 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-13 14:04:36,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:04:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash -851740421, now seen corresponding path program 1 times [2024-10-13 14:04:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:04:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320174748] [2024-10-13 14:04:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:04:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:04:36,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000733689] [2024-10-13 14:04:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:04:36,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:04:36,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:04:36,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:04:36,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 14:04:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:04:37,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-13 14:04:37,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:04:37,068 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 [2024-10-13 14:04:37,071 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 [2024-10-13 14:04:37,209 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 [2024-10-13 14:04:37,291 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 [2024-10-13 14:04:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:37,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:04:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:04:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:04:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320174748] [2024-10-13 14:04:50,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:04:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000733689] [2024-10-13 14:04:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000733689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 14:04:50,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 14:04:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2024-10-13 14:04:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460797184] [2024-10-13 14:04:50,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 14:04:50,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 14:04:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:04:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 14:04:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=757, Unknown=1, NotChecked=0, Total=870 [2024-10-13 14:04:50,743 INFO L87 Difference]: Start difference. First operand 273 states and 325 transitions. Second operand has 30 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 26 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:05:10,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []