./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-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 e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 11:33:19,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 11:33:19,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 11:33:19,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 11:33:19,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 11:33:19,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 11:33:19,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 11:33:19,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 11:33:19,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 11:33:19,256 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 11:33:19,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 11:33:19,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 11:33:19,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 11:33:19,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 11:33:19,257 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 11:33:19,258 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:33:19,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 11:33:19,258 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 [2025-03-04 11:33:19,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 11:33:19,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 11:33:19,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 11:33:19,471 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 11:33:19,472 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 11:33:19,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2025-03-04 11:33:20,584 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e498ba2/c3ebf945ea5249449ee3620f8a6a08a8/FLAG5673f34e6 [2025-03-04 11:33:20,776 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 11:33:20,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2025-03-04 11:33:20,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e498ba2/c3ebf945ea5249449ee3620f8a6a08a8/FLAG5673f34e6 [2025-03-04 11:33:20,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e498ba2/c3ebf945ea5249449ee3620f8a6a08a8 [2025-03-04 11:33:20,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 11:33:20,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 11:33:20,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 11:33:20,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 11:33:20,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 11:33:20,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:33:20" (1/1) ... [2025-03-04 11:33:20,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3ff5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:20, skipping insertion in model container [2025-03-04 11:33:20,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:33:20" (1/1) ... [2025-03-04 11:33:20,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 11:33:20,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:33:20,981 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 11:33:20,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:33:21,005 INFO L204 MainTranslator]: Completed translation [2025-03-04 11:33:21,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21 WrapperNode [2025-03-04 11:33:21,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 11:33:21,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 11:33:21,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 11:33:21,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 11:33:21,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,036 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2025-03-04 11:33:21,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 11:33:21,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 11:33:21,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 11:33:21,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 11:33:21,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,056 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 2, 17, 5, 4]. 57 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]. [2025-03-04 11:33:21,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 11:33:21,063 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 11:33:21,064 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 11:33:21,064 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 11:33:21,064 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (1/1) ... [2025-03-04 11:33:21,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:33:21,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:21,091 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) [2025-03-04 11:33:21,093 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 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 11:33:21,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 11:33:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2025-03-04 11:33:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 11:33:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 11:33:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 11:33:21,189 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 11:33:21,191 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 11:33:21,382 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-03-04 11:33:21,529 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2025-03-04 11:33:21,529 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 11:33:21,543 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 11:33:21,544 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 11:33:21,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:33:21 BoogieIcfgContainer [2025-03-04 11:33:21,545 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 11:33:21,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 11:33:21,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 11:33:21,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 11:33:21,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 11:33:20" (1/3) ... [2025-03-04 11:33:21,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2dc966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:33:21, skipping insertion in model container [2025-03-04 11:33:21,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:33:21" (2/3) ... [2025-03-04 11:33:21,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2dc966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:33:21, skipping insertion in model container [2025-03-04 11:33:21,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:33:21" (3/3) ... [2025-03-04 11:33:21,552 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2025-03-04 11:33:21,565 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 11:33:21,566 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps3-ll.c that has 3 procedures, 111 locations, 1 initial locations, 0 loop locations, and 44 error locations. [2025-03-04 11:33:21,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 11:33:21,612 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;@5f73d7e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 11:33:21,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-03-04 11:33:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 11:33:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-04 11:33:21,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:21,618 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 11:33:21,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:21,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2104477835, now seen corresponding path program 1 times [2025-03-04 11:33:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:21,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242630248] [2025-03-04 11:33:21,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:21,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 11:33:21,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 11:33:21,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:21,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:22,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242630248] [2025-03-04 11:33:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242630248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:22,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040302203] [2025-03-04 11:33:22,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:22,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:22,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:22,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:22,028 INFO L87 Difference]: Start difference. First operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2025-03-04 11:33:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:22,203 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2025-03-04 11:33:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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 6 [2025-03-04 11:33:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:22,209 INFO L225 Difference]: With dead ends: 276 [2025-03-04 11:33:22,209 INFO L226 Difference]: Without dead ends: 162 [2025-03-04 11:33:22,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:22,214 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 137 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:22,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 472 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-04 11:33:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2025-03-04 11:33:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 122 states have internal predecessors, (139), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2025-03-04 11:33:22,250 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 6 [2025-03-04 11:33:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:22,250 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2025-03-04 11:33:22,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2025-03-04 11:33:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2025-03-04 11:33:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 11:33:22,254 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:22,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:33:22,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 11:33:22,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:22,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash 526399251, now seen corresponding path program 1 times [2025-03-04 11:33:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:22,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513641337] [2025-03-04 11:33:22,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:22,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 11:33:22,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 11:33:22,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:22,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513641337] [2025-03-04 11:33:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513641337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:22,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144592960] [2025-03-04 11:33:22,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:22,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:22,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:22,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:22,458 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2025-03-04 11:33:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:22,638 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2025-03-04 11:33:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:22,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2025-03-04 11:33:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:22,640 INFO L225 Difference]: With dead ends: 186 [2025-03-04 11:33:22,640 INFO L226 Difference]: Without dead ends: 180 [2025-03-04 11:33:22,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:22,641 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 131 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:22,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 386 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-03-04 11:33:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2025-03-04 11:33:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.705128205128205) internal successors, (133), 122 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2025-03-04 11:33:22,648 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 8 [2025-03-04 11:33:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:22,648 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2025-03-04 11:33:22,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2025-03-04 11:33:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2025-03-04 11:33:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 11:33:22,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:22,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:33:22,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 11:33:22,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:22,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -248015379, now seen corresponding path program 1 times [2025-03-04 11:33:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:22,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181154974] [2025-03-04 11:33:22,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:22,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 11:33:22,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 11:33:22,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:22,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181154974] [2025-03-04 11:33:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181154974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:22,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:33:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91684267] [2025-03-04 11:33:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:22,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:33:22,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:22,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:33:22,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:22,817 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2025-03-04 11:33:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:22,948 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2025-03-04 11:33:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2025-03-04 11:33:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:22,949 INFO L225 Difference]: With dead ends: 156 [2025-03-04 11:33:22,949 INFO L226 Difference]: Without dead ends: 155 [2025-03-04 11:33:22,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:33:22,950 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 123 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:22,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 441 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-04 11:33:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2025-03-04 11:33:22,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 122 states have internal predecessors, (132), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2025-03-04 11:33:22,961 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 14 [2025-03-04 11:33:22,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:22,961 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2025-03-04 11:33:22,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2025-03-04 11:33:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2025-03-04 11:33:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-04 11:33:22,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:22,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:33:22,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 11:33:22,965 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:22,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash 901457898, now seen corresponding path program 1 times [2025-03-04 11:33:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656229569] [2025-03-04 11:33:22,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:22,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 11:33:22,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 11:33:22,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:22,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748130406] [2025-03-04 11:33:22,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:22,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:22,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:22,995 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) [2025-03-04 11:33:22,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 11:33:23,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 11:33:23,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 11:33:23,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:23,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:23,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-04 11:33:23,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:23,086 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 [2025-03-04 11:33:23,095 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 [2025-03-04 11:33:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:23,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:23,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656229569] [2025-03-04 11:33:23,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:23,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748130406] [2025-03-04 11:33:23,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748130406] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:23,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:23,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 11:33:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192508152] [2025-03-04 11:33:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:23,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 11:33:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:23,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 11:33:23,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:33:23,266 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2025-03-04 11:33:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:23,491 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2025-03-04 11:33:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 11:33:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 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 [2025-03-04 11:33:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:23,492 INFO L225 Difference]: With dead ends: 147 [2025-03-04 11:33:23,492 INFO L226 Difference]: Without dead ends: 146 [2025-03-04 11:33:23,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-03-04 11:33:23,493 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 124 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:23,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 511 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-04 11:33:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2025-03-04 11:33:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 122 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2025-03-04 11:33:23,502 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 15 [2025-03-04 11:33:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:23,502 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2025-03-04 11:33:23,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2025-03-04 11:33:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2025-03-04 11:33:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-04 11:33:23,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:23,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:33:23,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 11:33:23,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:23,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:23,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:23,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2119576181, now seen corresponding path program 1 times [2025-03-04 11:33:23,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:23,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149800647] [2025-03-04 11:33:23,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:23,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 11:33:23,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 11:33:23,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:23,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:23,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149800647] [2025-03-04 11:33:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149800647] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:23,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:23,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072695069] [2025-03-04 11:33:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:23,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:23,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:23,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:23,820 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-03-04 11:33:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:23,927 INFO L93 Difference]: Finished difference Result 178 states and 181 transitions. [2025-03-04 11:33:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 16 [2025-03-04 11:33:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:23,929 INFO L225 Difference]: With dead ends: 178 [2025-03-04 11:33:23,929 INFO L226 Difference]: Without dead ends: 174 [2025-03-04 11:33:23,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:23,929 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 99 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:23,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 399 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-04 11:33:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 129. [2025-03-04 11:33:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 122 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 136 transitions. [2025-03-04 11:33:23,941 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 136 transitions. Word has length 16 [2025-03-04 11:33:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:23,941 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 136 transitions. [2025-03-04 11:33:23,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-03-04 11:33:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2025-03-04 11:33:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-04 11:33:23,941 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:23,941 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:33:23,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 11:33:23,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:23,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:23,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1182139591, now seen corresponding path program 1 times [2025-03-04 11:33:23,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:23,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109754842] [2025-03-04 11:33:23,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:23,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:23,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 11:33:23,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 11:33:23,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:23,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:23,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616893751] [2025-03-04 11:33:23,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:23,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:23,963 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) [2025-03-04 11:33:23,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 11:33:24,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 11:33:24,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 11:33:24,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:24,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:24,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-04 11:33:24,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:24,033 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 [2025-03-04 11:33:24,037 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 [2025-03-04 11:33:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:24,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:24,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109754842] [2025-03-04 11:33:24,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616893751] [2025-03-04 11:33:24,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616893751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:24,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 11:33:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703907031] [2025-03-04 11:33:24,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:24,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 11:33:24,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:24,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 11:33:24,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:24,166 INFO L87 Difference]: Start difference. First operand 129 states and 136 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2025-03-04 11:33:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:24,364 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2025-03-04 11:33:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 11:33:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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 20 [2025-03-04 11:33:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:24,365 INFO L225 Difference]: With dead ends: 142 [2025-03-04 11:33:24,365 INFO L226 Difference]: Without dead ends: 140 [2025-03-04 11:33:24,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-04 11:33:24,366 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 76 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 522 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 [2025-03-04 11:33:24,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 522 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-04 11:33:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2025-03-04 11:33:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 122 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2025-03-04 11:33:24,371 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 20 [2025-03-04 11:33:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:24,371 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2025-03-04 11:33:24,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2025-03-04 11:33:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2025-03-04 11:33:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-04 11:33:24,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:24,371 INFO L218 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] [2025-03-04 11:33:24,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 11:33:24,571 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,SelfDestructingSolverStorable5 [2025-03-04 11:33:24,572 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:24,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2130185115, now seen corresponding path program 1 times [2025-03-04 11:33:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446946620] [2025-03-04 11:33:24,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:24,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 11:33:24,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 11:33:24,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:24,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:24,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:24,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446946620] [2025-03-04 11:33:24,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446946620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:24,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:33:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582798047] [2025-03-04 11:33:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:24,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:33:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:24,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:33:24,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:24,726 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 7 states, 5 states have (on average 4.2) 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) [2025-03-04 11:33:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:24,877 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2025-03-04 11:33:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) 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 [2025-03-04 11:33:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:24,878 INFO L225 Difference]: With dead ends: 172 [2025-03-04 11:33:24,878 INFO L226 Difference]: Without dead ends: 171 [2025-03-04 11:33:24,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:33:24,879 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 84 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:24,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 405 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-03-04 11:33:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 129. [2025-03-04 11:33:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 122 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2025-03-04 11:33:24,884 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 22 [2025-03-04 11:33:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:24,884 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2025-03-04 11:33:24,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) 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) [2025-03-04 11:33:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2025-03-04 11:33:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 11:33:24,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:24,884 INFO L218 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] [2025-03-04 11:33:24,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 11:33:24,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:24,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1611229086, now seen corresponding path program 1 times [2025-03-04 11:33:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060456511] [2025-03-04 11:33:24,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:24,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 11:33:24,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 11:33:24,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:24,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060456511] [2025-03-04 11:33:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060456511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:25,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:25,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:25,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869022454] [2025-03-04 11:33:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:25,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:25,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:25,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:25,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:25,012 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 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) [2025-03-04 11:33:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:25,141 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2025-03-04 11:33:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 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 [2025-03-04 11:33:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:25,142 INFO L225 Difference]: With dead ends: 171 [2025-03-04 11:33:25,142 INFO L226 Difference]: Without dead ends: 170 [2025-03-04 11:33:25,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:25,143 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 78 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:25,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 398 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-04 11:33:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2025-03-04 11:33:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2025-03-04 11:33:25,149 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 23 [2025-03-04 11:33:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:25,149 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2025-03-04 11:33:25,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 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) [2025-03-04 11:33:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2025-03-04 11:33:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-04 11:33:25,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:25,150 INFO L218 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] [2025-03-04 11:33:25,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 11:33:25,150 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:25,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1383643776, now seen corresponding path program 1 times [2025-03-04 11:33:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898702652] [2025-03-04 11:33:25,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:25,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 11:33:25,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 11:33:25,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:25,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898702652] [2025-03-04 11:33:25,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898702652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:25,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:25,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:33:25,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857062305] [2025-03-04 11:33:25,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:25,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:33:25,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:25,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:33:25,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:25,328 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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) [2025-03-04 11:33:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:25,392 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2025-03-04 11:33:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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 31 [2025-03-04 11:33:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:25,393 INFO L225 Difference]: With dead ends: 170 [2025-03-04 11:33:25,393 INFO L226 Difference]: Without dead ends: 169 [2025-03-04 11:33:25,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:33:25,394 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:25,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 572 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:33:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-03-04 11:33:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 130. [2025-03-04 11:33:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 123 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2025-03-04 11:33:25,397 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 31 [2025-03-04 11:33:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:25,398 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2025-03-04 11:33:25,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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) [2025-03-04 11:33:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2025-03-04 11:33:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-04 11:33:25,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:25,398 INFO L218 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] [2025-03-04 11:33:25,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 11:33:25,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:25,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -56715875, now seen corresponding path program 1 times [2025-03-04 11:33:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:25,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937592781] [2025-03-04 11:33:25,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:25,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 11:33:25,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 11:33:25,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:25,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937592781] [2025-03-04 11:33:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937592781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:33:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820352590] [2025-03-04 11:33:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:25,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:33:25,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:25,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:33:25,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:25,524 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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) [2025-03-04 11:33:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:25,588 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2025-03-04 11:33:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:25,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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 32 [2025-03-04 11:33:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:25,589 INFO L225 Difference]: With dead ends: 169 [2025-03-04 11:33:25,589 INFO L226 Difference]: Without dead ends: 168 [2025-03-04 11:33:25,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:33:25,590 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 65 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:25,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 501 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:33:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-04 11:33:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 131. [2025-03-04 11:33:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 80 states have (on average 1.5625) internal successors, (125), 124 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2025-03-04 11:33:25,594 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 32 [2025-03-04 11:33:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:25,594 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2025-03-04 11:33:25,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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) [2025-03-04 11:33:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2025-03-04 11:33:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-04 11:33:25,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:25,595 INFO L218 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] [2025-03-04 11:33:25,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 11:33:25,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:25,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1758192098, now seen corresponding path program 1 times [2025-03-04 11:33:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:25,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791150087] [2025-03-04 11:33:25,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:25,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:25,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-04 11:33:25,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-04 11:33:25,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:25,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:25,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791150087] [2025-03-04 11:33:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791150087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:25,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:25,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392046116] [2025-03-04 11:33:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:25,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:25,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:25,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:25,700 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-03-04 11:33:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:25,772 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2025-03-04 11:33:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 33 [2025-03-04 11:33:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:25,773 INFO L225 Difference]: With dead ends: 168 [2025-03-04 11:33:25,773 INFO L226 Difference]: Without dead ends: 166 [2025-03-04 11:33:25,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:25,773 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 64 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:25,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 429 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-04 11:33:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 133. [2025-03-04 11:33:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.548780487804878) internal successors, (127), 126 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:33:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2025-03-04 11:33:25,778 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 33 [2025-03-04 11:33:25,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:25,778 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2025-03-04 11:33:25,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-03-04 11:33:25,778 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2025-03-04 11:33:25,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-04 11:33:25,778 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:25,779 INFO L218 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] [2025-03-04 11:33:25,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 11:33:25,779 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:25,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1330229157, now seen corresponding path program 1 times [2025-03-04 11:33:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483402163] [2025-03-04 11:33:25,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:25,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 11:33:25,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 11:33:25,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:25,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:25,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:25,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483402163] [2025-03-04 11:33:25,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483402163] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:25,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:25,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:33:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317198637] [2025-03-04 11:33:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:25,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:33:25,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:25,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:33:25,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:33:25,878 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-03-04 11:33:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:25,952 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2025-03-04 11:33:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:33:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 34 [2025-03-04 11:33:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:25,954 INFO L225 Difference]: With dead ends: 166 [2025-03-04 11:33:25,954 INFO L226 Difference]: Without dead ends: 164 [2025-03-04 11:33:25,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:33:25,954 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 64 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:25,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 266 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-03-04 11:33:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 138. [2025-03-04 11:33:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 129 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:33:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2025-03-04 11:33:25,960 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 34 [2025-03-04 11:33:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:25,960 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2025-03-04 11:33:25,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-03-04 11:33:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2025-03-04 11:33:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-04 11:33:25,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:25,961 INFO L218 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] [2025-03-04 11:33:25,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 11:33:25,962 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:25,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:25,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1700458052, now seen corresponding path program 1 times [2025-03-04 11:33:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:25,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152185643] [2025-03-04 11:33:25,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:25,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-04 11:33:25,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 11:33:25,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:25,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689791756] [2025-03-04 11:33:25,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:25,986 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) [2025-03-04 11:33:25,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 11:33:26,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-04 11:33:26,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 11:33:26,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:26,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:26,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 11:33:26,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:26,059 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 [2025-03-04 11:33:26,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-04 11:33:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:26,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152185643] [2025-03-04 11:33:26,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:26,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689791756] [2025-03-04 11:33:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689791756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:26,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 11:33:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525441595] [2025-03-04 11:33:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:26,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 11:33:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:26,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 11:33:26,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:26,167 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 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) [2025-03-04 11:33:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:26,270 INFO L93 Difference]: Finished difference Result 168 states and 172 transitions. [2025-03-04 11:33:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 11:33:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 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 [2025-03-04 11:33:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:26,271 INFO L225 Difference]: With dead ends: 168 [2025-03-04 11:33:26,271 INFO L226 Difference]: Without dead ends: 166 [2025-03-04 11:33:26,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-04 11:33:26,272 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 189 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:26,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 331 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-04 11:33:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 136. [2025-03-04 11:33:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 86 states have (on average 1.5) internal successors, (129), 127 states have internal predecessors, (129), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:33:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2025-03-04 11:33:26,279 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 35 [2025-03-04 11:33:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:26,280 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2025-03-04 11:33:26,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 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) [2025-03-04 11:33:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2025-03-04 11:33:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-04 11:33:26,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:26,281 INFO L218 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] [2025-03-04 11:33:26,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 11:33:26,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:26,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:26,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1550034109, now seen corresponding path program 1 times [2025-03-04 11:33:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004199730] [2025-03-04 11:33:26,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:26,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 11:33:26,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 11:33:26,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:26,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004199730] [2025-03-04 11:33:26,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004199730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:26,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:26,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:33:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75245045] [2025-03-04 11:33:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:26,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:33:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:26,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:33:26,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:33:26,566 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-04 11:33:26,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:26,688 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2025-03-04 11:33:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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 36 [2025-03-04 11:33:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:26,690 INFO L225 Difference]: With dead ends: 166 [2025-03-04 11:33:26,690 INFO L226 Difference]: Without dead ends: 160 [2025-03-04 11:33:26,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:26,691 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 69 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:26,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 239 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-03-04 11:33:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 142. [2025-03-04 11:33:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 133 states have internal predecessors, (135), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:33:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2025-03-04 11:33:26,698 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 36 [2025-03-04 11:33:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:26,698 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2025-03-04 11:33:26,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-04 11:33:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2025-03-04 11:33:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-04 11:33:26,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:26,700 INFO L218 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] [2025-03-04 11:33:26,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 11:33:26,700 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:26,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1174592039, now seen corresponding path program 1 times [2025-03-04 11:33:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:26,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241287955] [2025-03-04 11:33:26,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:26,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:26,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 11:33:26,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 11:33:26,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:26,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:26,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161597433] [2025-03-04 11:33:26,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:26,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:26,723 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) [2025-03-04 11:33:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 11:33:26,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 11:33:26,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 11:33:26,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:26,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:26,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 11:33:26,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:26,797 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 [2025-03-04 11:33:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:26,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241287955] [2025-03-04 11:33:26,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161597433] [2025-03-04 11:33:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161597433] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:26,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 11:33:26,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106627371] [2025-03-04 11:33:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:26,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 11:33:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:26,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 11:33:26,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:26,889 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 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) [2025-03-04 11:33:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:27,000 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2025-03-04 11:33:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 11:33:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 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 [2025-03-04 11:33:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:27,001 INFO L225 Difference]: With dead ends: 171 [2025-03-04 11:33:27,001 INFO L226 Difference]: Without dead ends: 170 [2025-03-04 11:33:27,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:33:27,002 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 59 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:27,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 487 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-04 11:33:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 148. [2025-03-04 11:33:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 97 states have (on average 1.443298969072165) internal successors, (140), 138 states have internal predecessors, (140), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:33:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2025-03-04 11:33:27,007 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 36 [2025-03-04 11:33:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:27,007 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2025-03-04 11:33:27,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 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) [2025-03-04 11:33:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2025-03-04 11:33:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-04 11:33:27,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:27,008 INFO L218 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] [2025-03-04 11:33:27,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 11:33:27,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-04 11:33:27,209 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:27,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2052614822, now seen corresponding path program 1 times [2025-03-04 11:33:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:27,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658311437] [2025-03-04 11:33:27,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:27,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 11:33:27,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 11:33:27,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:27,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:27,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:27,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658311437] [2025-03-04 11:33:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658311437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:27,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:27,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:33:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791135046] [2025-03-04 11:33:27,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:27,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:33:27,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:27,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:33:27,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:27,356 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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) [2025-03-04 11:33:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:27,474 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2025-03-04 11:33:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:27,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 37 [2025-03-04 11:33:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:27,475 INFO L225 Difference]: With dead ends: 152 [2025-03-04 11:33:27,475 INFO L226 Difference]: Without dead ends: 151 [2025-03-04 11:33:27,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:33:27,476 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 38 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:27,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 549 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-03-04 11:33:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2025-03-04 11:33:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 139 states have internal predecessors, (141), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:33:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2025-03-04 11:33:27,481 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 37 [2025-03-04 11:33:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:27,482 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2025-03-04 11:33:27,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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) [2025-03-04 11:33:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2025-03-04 11:33:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 11:33:27,482 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:27,482 INFO L218 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] [2025-03-04 11:33:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 11:33:27,482 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:27,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 793449975, now seen corresponding path program 1 times [2025-03-04 11:33:27,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:27,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861751215] [2025-03-04 11:33:27,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:27,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 11:33:27,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 11:33:27,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:27,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:27,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:27,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861751215] [2025-03-04 11:33:27,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861751215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:27,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:27,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:27,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480475107] [2025-03-04 11:33:27,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:27,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:27,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:27,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:27,627 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (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) [2025-03-04 11:33:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:27,725 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2025-03-04 11:33:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:27,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (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 [2025-03-04 11:33:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:27,726 INFO L225 Difference]: With dead ends: 151 [2025-03-04 11:33:27,726 INFO L226 Difference]: Without dead ends: 150 [2025-03-04 11:33:27,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:33:27,726 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:27,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 466 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-04 11:33:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-03-04 11:33:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.4343434343434343) internal successors, (142), 140 states have internal predecessors, (142), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:33:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2025-03-04 11:33:27,732 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 38 [2025-03-04 11:33:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:27,732 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2025-03-04 11:33:27,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (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) [2025-03-04 11:33:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2025-03-04 11:33:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-04 11:33:27,733 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:27,733 INFO L218 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] [2025-03-04 11:33:27,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 11:33:27,733 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:27,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash -948248087, now seen corresponding path program 1 times [2025-03-04 11:33:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735086251] [2025-03-04 11:33:27,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:27,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-04 11:33:27,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:33:27,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:27,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:27,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751930069] [2025-03-04 11:33:27,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:27,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:27,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:27,759 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) [2025-03-04 11:33:27,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 11:33:27,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-04 11:33:27,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:33:27,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:27,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:27,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-04 11:33:27,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:27,850 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 [2025-03-04 11:33:27,855 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 [2025-03-04 11:33:28,078 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 [2025-03-04 11:33:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:28,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:33:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:28,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735086251] [2025-03-04 11:33:28,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751930069] [2025-03-04 11:33:28,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751930069] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:33:28,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:33:28,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2025-03-04 11:33:28,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793420443] [2025-03-04 11:33:28,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:33:28,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 11:33:28,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:28,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 11:33:28,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:33:28,341 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 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) [2025-03-04 11:33:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:29,120 INFO L93 Difference]: Finished difference Result 230 states and 237 transitions. [2025-03-04 11:33:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-04 11:33:29,120 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 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 42 [2025-03-04 11:33:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:29,121 INFO L225 Difference]: With dead ends: 230 [2025-03-04 11:33:29,121 INFO L226 Difference]: Without dead ends: 227 [2025-03-04 11:33:29,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2025-03-04 11:33:29,122 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 487 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:29,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 831 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 11:33:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-03-04 11:33:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 178. [2025-03-04 11:33:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 124 states have (on average 1.467741935483871) internal successors, (182), 164 states have internal predecessors, (182), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2025-03-04 11:33:29,129 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 42 [2025-03-04 11:33:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:29,129 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2025-03-04 11:33:29,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 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) [2025-03-04 11:33:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2025-03-04 11:33:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-04 11:33:29,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:29,129 INFO L218 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] [2025-03-04 11:33:29,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 11:33:29,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 11:33:29,330 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:29,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash 857325085, now seen corresponding path program 1 times [2025-03-04 11:33:29,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:29,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628608657] [2025-03-04 11:33:29,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:29,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:29,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-04 11:33:29,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:33:29,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:29,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:29,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628608657] [2025-03-04 11:33:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628608657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:29,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:29,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882258969] [2025-03-04 11:33:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:29,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:29,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:29,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:29,418 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2025-03-04 11:33:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:29,562 INFO L93 Difference]: Finished difference Result 193 states and 219 transitions. [2025-03-04 11:33:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:29,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 42 [2025-03-04 11:33:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:29,563 INFO L225 Difference]: With dead ends: 193 [2025-03-04 11:33:29,563 INFO L226 Difference]: Without dead ends: 192 [2025-03-04 11:33:29,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:29,563 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:29,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 321 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-04 11:33:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2025-03-04 11:33:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 125 states have (on average 1.464) internal successors, (183), 165 states have internal predecessors, (183), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2025-03-04 11:33:29,570 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 42 [2025-03-04 11:33:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:29,570 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2025-03-04 11:33:29,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2025-03-04 11:33:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2025-03-04 11:33:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-04 11:33:29,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:29,570 INFO L218 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] [2025-03-04 11:33:29,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-04 11:33:29,570 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:29,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash 807273850, now seen corresponding path program 1 times [2025-03-04 11:33:29,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049894499] [2025-03-04 11:33:29,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:29,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-04 11:33:29,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 11:33:29,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:29,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075858711] [2025-03-04 11:33:29,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:29,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:29,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:29,584 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) [2025-03-04 11:33:29,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 11:33:29,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-04 11:33:29,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 11:33:29,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:29,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:29,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 11:33:29,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:29,657 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 [2025-03-04 11:33:29,663 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 [2025-03-04 11:33:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:29,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049894499] [2025-03-04 11:33:29,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075858711] [2025-03-04 11:33:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075858711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554161567] [2025-03-04 11:33:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:29,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:29,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:29,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:29,760 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 6 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:33:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:29,866 INFO L93 Difference]: Finished difference Result 193 states and 218 transitions. [2025-03-04 11:33:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:29,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2025-03-04 11:33:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:29,868 INFO L225 Difference]: With dead ends: 193 [2025-03-04 11:33:29,868 INFO L226 Difference]: Without dead ends: 192 [2025-03-04 11:33:29,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:29,868 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 53 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:29,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 287 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-04 11:33:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2025-03-04 11:33:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 126 states have (on average 1.4603174603174602) internal successors, (184), 166 states have internal predecessors, (184), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 202 transitions. [2025-03-04 11:33:29,874 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 202 transitions. Word has length 43 [2025-03-04 11:33:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:29,874 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 202 transitions. [2025-03-04 11:33:29,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:33:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 202 transitions. [2025-03-04 11:33:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-04 11:33:29,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:29,875 INFO L218 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] [2025-03-04 11:33:29,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 11:33:30,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:30,075 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:30,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash -733342585, now seen corresponding path program 1 times [2025-03-04 11:33:30,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964189347] [2025-03-04 11:33:30,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:30,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 11:33:30,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 11:33:30,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:30,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:30,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964189347] [2025-03-04 11:33:30,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964189347] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:33:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986864235] [2025-03-04 11:33:30,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:30,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:30,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:30,269 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) [2025-03-04 11:33:30,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 11:33:30,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 11:33:30,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 11:33:30,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:30,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:30,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 11:33:30,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:30,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2025-03-04 11:33:30,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-04 11:33:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:30,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:33:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986864235] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:33:30,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:33:30,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2025-03-04 11:33:30,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914743719] [2025-03-04 11:33:30,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:33:30,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 11:33:30,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:30,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 11:33:30,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:33:30,614 INFO L87 Difference]: Start difference. First operand 180 states and 202 transitions. Second operand has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:33:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:30,992 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2025-03-04 11:33:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 11:33:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2025-03-04 11:33:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:30,994 INFO L225 Difference]: With dead ends: 192 [2025-03-04 11:33:30,994 INFO L226 Difference]: Without dead ends: 191 [2025-03-04 11:33:30,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2025-03-04 11:33:30,994 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 342 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:30,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 633 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:33:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-03-04 11:33:31,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2025-03-04 11:33:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 126 states have (on average 1.4444444444444444) internal successors, (182), 165 states have internal predecessors, (182), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 200 transitions. [2025-03-04 11:33:31,001 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 200 transitions. Word has length 44 [2025-03-04 11:33:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:31,001 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 200 transitions. [2025-03-04 11:33:31,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:33:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 200 transitions. [2025-03-04 11:33:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-04 11:33:31,001 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:31,001 INFO L218 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, 1] [2025-03-04 11:33:31,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 11:33:31,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:31,205 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:31,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash -744314437, now seen corresponding path program 1 times [2025-03-04 11:33:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:31,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479964850] [2025-03-04 11:33:31,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:31,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 11:33:31,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 11:33:31,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:31,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:31,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479964850] [2025-03-04 11:33:31,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479964850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:31,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:31,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801499278] [2025-03-04 11:33:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:31,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:31,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:31,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:31,293 INFO L87 Difference]: Start difference. First operand 179 states and 200 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2025-03-04 11:33:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:31,380 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2025-03-04 11:33:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:31,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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 44 [2025-03-04 11:33:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:31,381 INFO L225 Difference]: With dead ends: 193 [2025-03-04 11:33:31,381 INFO L226 Difference]: Without dead ends: 192 [2025-03-04 11:33:31,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:31,383 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 53 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:31,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 223 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-04 11:33:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2025-03-04 11:33:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 127 states have (on average 1.4409448818897639) internal successors, (183), 166 states have internal predecessors, (183), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2025-03-04 11:33:31,391 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 44 [2025-03-04 11:33:31,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:31,391 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2025-03-04 11:33:31,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2025-03-04 11:33:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2025-03-04 11:33:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-04 11:33:31,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:31,392 INFO L218 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] [2025-03-04 11:33:31,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-04 11:33:31,392 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:31,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1258783588, now seen corresponding path program 1 times [2025-03-04 11:33:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788469055] [2025-03-04 11:33:31,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:31,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 11:33:31,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 11:33:31,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:31,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788469055] [2025-03-04 11:33:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788469055] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:33:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637551680] [2025-03-04 11:33:31,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:31,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:31,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:31,547 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) [2025-03-04 11:33:31,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 11:33:31,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 11:33:31,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 11:33:31,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:31,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:31,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 11:33:31,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:31,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-04 11:33:31,740 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 [2025-03-04 11:33:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:31,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:31,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637551680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:31,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:33:31,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2025-03-04 11:33:31,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839504472] [2025-03-04 11:33:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:31,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 11:33:31,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:31,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 11:33:31,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:33:31,753 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2025-03-04 11:33:35,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:33:37,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:33:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:37,580 INFO L93 Difference]: Finished difference Result 180 states and 201 transitions. [2025-03-04 11:33:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 11:33:37,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 45 [2025-03-04 11:33:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:37,581 INFO L225 Difference]: With dead ends: 180 [2025-03-04 11:33:37,581 INFO L226 Difference]: Without dead ends: 178 [2025-03-04 11:33:37,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2025-03-04 11:33:37,581 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 174 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:37,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 349 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 294 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2025-03-04 11:33:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-04 11:33:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-04 11:33:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 127 states have (on average 1.4173228346456692) internal successors, (180), 164 states have internal predecessors, (180), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2025-03-04 11:33:37,587 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 45 [2025-03-04 11:33:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:37,587 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2025-03-04 11:33:37,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2025-03-04 11:33:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2025-03-04 11:33:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-04 11:33:37,588 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:37,588 INFO L218 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, 1, 1] [2025-03-04 11:33:37,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 11:33:37,788 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,SelfDestructingSolverStorable22 [2025-03-04 11:33:37,788 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:37,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1598911080, now seen corresponding path program 1 times [2025-03-04 11:33:37,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:37,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395956437] [2025-03-04 11:33:37,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:37,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 11:33:37,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 11:33:37,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:37,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:37,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:37,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395956437] [2025-03-04 11:33:37,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395956437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:37,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:33:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673545730] [2025-03-04 11:33:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:37,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:33:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:37,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:33:37,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:37,872 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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) [2025-03-04 11:33:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:37,999 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2025-03-04 11:33:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:33:37,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 45 [2025-03-04 11:33:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:38,000 INFO L225 Difference]: With dead ends: 190 [2025-03-04 11:33:38,000 INFO L226 Difference]: Without dead ends: 189 [2025-03-04 11:33:38,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:33:38,001 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 40 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:38,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 273 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-03-04 11:33:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2025-03-04 11:33:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.4140625) internal successors, (181), 165 states have internal predecessors, (181), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2025-03-04 11:33:38,007 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 45 [2025-03-04 11:33:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:38,007 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2025-03-04 11:33:38,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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) [2025-03-04 11:33:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2025-03-04 11:33:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-04 11:33:38,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:38,008 INFO L218 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] [2025-03-04 11:33:38,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-04 11:33:38,008 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:38,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -367585499, now seen corresponding path program 1 times [2025-03-04 11:33:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573811686] [2025-03-04 11:33:38,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:38,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-04 11:33:38,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 11:33:38,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:38,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738969205] [2025-03-04 11:33:38,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:38,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:38,034 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) [2025-03-04 11:33:38,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 11:33:38,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-04 11:33:38,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 11:33:38,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:38,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:38,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 11:33:38,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:38,126 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 [2025-03-04 11:33:38,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-04 11:33:38,237 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 [2025-03-04 11:33:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:38,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:33:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573811686] [2025-03-04 11:33:38,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738969205] [2025-03-04 11:33:38,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738969205] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:33:38,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:33:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2025-03-04 11:33:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645217828] [2025-03-04 11:33:38,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:33:38,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 11:33:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:38,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 11:33:38,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-03-04 11:33:38,412 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:33:39,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-03-04 11:33:40,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-03-04 11:33:42,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-03-04 11:33:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:42,549 INFO L93 Difference]: Finished difference Result 187 states and 207 transitions. [2025-03-04 11:33:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:33:42,549 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 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 46 [2025-03-04 11:33:42,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:42,550 INFO L225 Difference]: With dead ends: 187 [2025-03-04 11:33:42,550 INFO L226 Difference]: Without dead ends: 186 [2025-03-04 11:33:42,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2025-03-04 11:33:42,551 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 366 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:42,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 551 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 393 Invalid, 3 Unknown, 0 Unchecked, 4.0s Time] [2025-03-04 11:33:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-04 11:33:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2025-03-04 11:33:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 128 states have (on average 1.3984375) internal successors, (179), 164 states have internal predecessors, (179), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 197 transitions. [2025-03-04 11:33:42,561 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 197 transitions. Word has length 46 [2025-03-04 11:33:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:42,561 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 197 transitions. [2025-03-04 11:33:42,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:33:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 197 transitions. [2025-03-04 11:33:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-04 11:33:42,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:42,561 INFO L218 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, 1, 1, 1] [2025-03-04 11:33:42,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 11:33:42,761 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,SelfDestructingSolverStorable24 [2025-03-04 11:33:42,762 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:42,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1973364057, now seen corresponding path program 1 times [2025-03-04 11:33:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042931772] [2025-03-04 11:33:42,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:42,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-04 11:33:42,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 11:33:42,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:42,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:42,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372862183] [2025-03-04 11:33:42,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:42,780 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) [2025-03-04 11:33:42,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 11:33:42,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-04 11:33:42,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 11:33:42,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:42,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:42,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 11:33:42,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:42,858 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 [2025-03-04 11:33:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:42,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:33:42,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:42,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042931772] [2025-03-04 11:33:42,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:42,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372862183] [2025-03-04 11:33:42,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372862183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:33:42,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:33:42,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:33:42,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260400507] [2025-03-04 11:33:42,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:33:42,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:33:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:42,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:33:42,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:33:42,909 INFO L87 Difference]: Start difference. First operand 178 states and 197 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 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) [2025-03-04 11:33:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:42,992 INFO L93 Difference]: Finished difference Result 188 states and 208 transitions. [2025-03-04 11:33:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:33:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 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 46 [2025-03-04 11:33:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:42,993 INFO L225 Difference]: With dead ends: 188 [2025-03-04 11:33:42,993 INFO L226 Difference]: Without dead ends: 186 [2025-03-04 11:33:42,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:33:42,993 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 36 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:42,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 233 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:33:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-04 11:33:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2025-03-04 11:33:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 166 states have internal predecessors, (181), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 199 transitions. [2025-03-04 11:33:43,000 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 199 transitions. Word has length 46 [2025-03-04 11:33:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:43,000 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 199 transitions. [2025-03-04 11:33:43,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 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) [2025-03-04 11:33:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 199 transitions. [2025-03-04 11:33:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-04 11:33:43,000 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:43,000 INFO L218 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] [2025-03-04 11:33:43,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 11:33:43,200 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,SelfDestructingSolverStorable25 [2025-03-04 11:33:43,201 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:43,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1489751482, now seen corresponding path program 1 times [2025-03-04 11:33:43,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:43,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049698929] [2025-03-04 11:33:43,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:43,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-04 11:33:43,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-04 11:33:43,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:43,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760562668] [2025-03-04 11:33:43,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:43,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:43,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:43,216 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) [2025-03-04 11:33:43,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 11:33:43,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-04 11:33:43,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-04 11:33:43,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:43,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:43,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-04 11:33:43,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:43,306 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 [2025-03-04 11:33:43,374 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 [2025-03-04 11:33:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:43,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:33:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:33:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049698929] [2025-03-04 11:33:47,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:33:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760562668] [2025-03-04 11:33:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760562668] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:33:47,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:33:47,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-03-04 11:33:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020595570] [2025-03-04 11:33:47,356 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:33:47,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 11:33:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:33:47,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 11:33:47,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=219, Unknown=1, NotChecked=0, Total=272 [2025-03-04 11:33:47,357 INFO L87 Difference]: Start difference. First operand 180 states and 199 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-04 11:33:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:33:47,660 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2025-03-04 11:33:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 11:33:47,660 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 47 [2025-03-04 11:33:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:33:47,661 INFO L225 Difference]: With dead ends: 207 [2025-03-04 11:33:47,661 INFO L226 Difference]: Without dead ends: 206 [2025-03-04 11:33:47,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=103, Invalid=358, Unknown=1, NotChecked=0, Total=462 [2025-03-04 11:33:47,662 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 166 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:33:47,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 563 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:33:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-04 11:33:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2025-03-04 11:33:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 166 states have internal predecessors, (180), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:33:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2025-03-04 11:33:47,668 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 47 [2025-03-04 11:33:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:33:47,668 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2025-03-04 11:33:47,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-04 11:33:47,668 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2025-03-04 11:33:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-04 11:33:47,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:33:47,668 INFO L218 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] [2025-03-04 11:33:47,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 11:33:47,869 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,SelfDestructingSolverStorable26 [2025-03-04 11:33:47,869 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:33:47,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:33:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1062344253, now seen corresponding path program 1 times [2025-03-04 11:33:47,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:33:47,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429519202] [2025-03-04 11:33:47,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:33:47,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-04 11:33:47,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-04 11:33:47,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:47,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:33:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692648003] [2025-03-04 11:33:47,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:33:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:33:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:33:47,891 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) [2025-03-04 11:33:47,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 11:33:47,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-04 11:33:47,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-04 11:33:47,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:33:47,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:33:47,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-04 11:33:47,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:33:47,983 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 [2025-03-04 11:33:48,048 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 25 treesize of output 13 [2025-03-04 11:33:48,108 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 [2025-03-04 11:33:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:33:48,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429519202] [2025-03-04 11:34:04,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692648003] [2025-03-04 11:34:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692648003] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:04,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2025-03-04 11:34:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283115358] [2025-03-04 11:34:04,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:04,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 11:34:04,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:04,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 11:34:04,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=305, Unknown=4, NotChecked=0, Total=380 [2025-03-04 11:34:04,442 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:05,484 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2025-03-04 11:34:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 11:34:05,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 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 48 [2025-03-04 11:34:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:05,485 INFO L225 Difference]: With dead ends: 184 [2025-03-04 11:34:05,485 INFO L226 Difference]: Without dead ends: 183 [2025-03-04 11:34:05,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=224, Invalid=702, Unknown=4, NotChecked=0, Total=930 [2025-03-04 11:34:05,486 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 274 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:05,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 805 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-04 11:34:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-04 11:34:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2025-03-04 11:34:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 165 states have internal predecessors, (178), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:34:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2025-03-04 11:34:05,493 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 48 [2025-03-04 11:34:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:05,493 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2025-03-04 11:34:05,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2025-03-04 11:34:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-04 11:34:05,494 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:05,494 INFO L218 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, 1, 1, 1, 1, 1] [2025-03-04 11:34:05,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:05,694 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,SelfDestructingSolverStorable27 [2025-03-04 11:34:05,695 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:05,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:05,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1972686601, now seen corresponding path program 1 times [2025-03-04 11:34:05,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:05,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98507640] [2025-03-04 11:34:05,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:05,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:05,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-04 11:34:05,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-04 11:34:05,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:05,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:05,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755538938] [2025-03-04 11:34:05,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:05,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:05,709 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) [2025-03-04 11:34:05,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 11:34:05,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-04 11:34:05,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-04 11:34:05,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:05,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:05,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-04 11:34:05,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:05,806 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 [2025-03-04 11:34:05,810 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 [2025-03-04 11:34:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:05,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:34:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98507640] [2025-03-04 11:34:05,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755538938] [2025-03-04 11:34:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755538938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:34:05,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:34:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:34:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554757091] [2025-03-04 11:34:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:34:05,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:34:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:05,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:34:05,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:34:05,955 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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) [2025-03-04 11:34:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:06,075 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2025-03-04 11:34:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 11:34:06,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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 48 [2025-03-04 11:34:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:06,076 INFO L225 Difference]: With dead ends: 185 [2025-03-04 11:34:06,076 INFO L226 Difference]: Without dead ends: 183 [2025-03-04 11:34:06,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:34:06,077 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 33 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:06,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 264 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-04 11:34:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2025-03-04 11:34:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 167 states have internal predecessors, (180), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:34:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2025-03-04 11:34:06,083 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 48 [2025-03-04 11:34:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:06,083 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2025-03-04 11:34:06,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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) [2025-03-04 11:34:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2025-03-04 11:34:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-04 11:34:06,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:06,084 INFO L218 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] [2025-03-04 11:34:06,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 11:34:06,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-04 11:34:06,288 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:06,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:06,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1427066584, now seen corresponding path program 1 times [2025-03-04 11:34:06,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:06,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133581416] [2025-03-04 11:34:06,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:06,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:06,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-04 11:34:06,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-04 11:34:06,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:06,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755660665] [2025-03-04 11:34:06,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:06,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:06,303 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) [2025-03-04 11:34:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 11:34:06,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-04 11:34:06,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-04 11:34:06,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:06,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:06,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-04 11:34:06,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:06,401 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 [2025-03-04 11:34:06,405 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 [2025-03-04 11:34:06,409 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 [2025-03-04 11:34:06,581 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 [2025-03-04 11:34:06,619 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 [2025-03-04 11:34:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:06,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:07,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133581416] [2025-03-04 11:34:07,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755660665] [2025-03-04 11:34:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755660665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:07,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:34:07,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2025-03-04 11:34:07,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613385527] [2025-03-04 11:34:07,226 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:07,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 11:34:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:07,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 11:34:07,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:34:07,227 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 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) [2025-03-04 11:34:11,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:34:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:11,615 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2025-03-04 11:34:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 11:34:11,616 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 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 [2025-03-04 11:34:11,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:11,616 INFO L225 Difference]: With dead ends: 202 [2025-03-04 11:34:11,617 INFO L226 Difference]: Without dead ends: 201 [2025-03-04 11:34:11,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2025-03-04 11:34:11,617 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 161 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:11,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 590 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 361 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-04 11:34:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-04 11:34:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2025-03-04 11:34:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.356060606060606) internal successors, (179), 167 states have internal predecessors, (179), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:34:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2025-03-04 11:34:11,624 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 49 [2025-03-04 11:34:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:11,624 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2025-03-04 11:34:11,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 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) [2025-03-04 11:34:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2025-03-04 11:34:11,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 11:34:11,625 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:11,625 INFO L218 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] [2025-03-04 11:34:11,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 11:34:11,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:11,830 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:11,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1289391201, now seen corresponding path program 1 times [2025-03-04 11:34:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:11,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525900834] [2025-03-04 11:34:11,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:11,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 11:34:11,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 11:34:11,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:11,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:11,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621579330] [2025-03-04 11:34:11,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:11,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:11,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:11,847 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) [2025-03-04 11:34:11,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 11:34:11,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 11:34:11,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 11:34:11,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:11,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:11,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-04 11:34:11,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:11,938 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 [2025-03-04 11:34:11,941 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 [2025-03-04 11:34:12,108 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 25 treesize of output 13 [2025-03-04 11:34:12,125 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 [2025-03-04 11:34:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:12,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:13,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525900834] [2025-03-04 11:34:13,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:13,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621579330] [2025-03-04 11:34:13,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621579330] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:13,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:34:13,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-03-04 11:34:13,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236612544] [2025-03-04 11:34:13,287 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:13,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 11:34:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:13,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 11:34:13,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:34:13,287 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 13 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 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) [2025-03-04 11:34:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:13,683 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2025-03-04 11:34:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 11:34:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 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 [2025-03-04 11:34:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:13,684 INFO L225 Difference]: With dead ends: 207 [2025-03-04 11:34:13,684 INFO L226 Difference]: Without dead ends: 206 [2025-03-04 11:34:13,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2025-03-04 11:34:13,685 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 167 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:13,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 693 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:34:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-04 11:34:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 181. [2025-03-04 11:34:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.3484848484848484) internal successors, (178), 167 states have internal predecessors, (178), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:34:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2025-03-04 11:34:13,692 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 50 [2025-03-04 11:34:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:13,693 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 196 transitions. [2025-03-04 11:34:13,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 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) [2025-03-04 11:34:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 196 transitions. [2025-03-04 11:34:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 11:34:13,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:13,694 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:13,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:13,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:13,894 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:13,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1671246699, now seen corresponding path program 1 times [2025-03-04 11:34:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646864566] [2025-03-04 11:34:13,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:13,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 11:34:13,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 11:34:13,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:13,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:13,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646864566] [2025-03-04 11:34:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646864566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:34:13,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:34:13,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:34:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331826133] [2025-03-04 11:34:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:34:14,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:34:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:14,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:34:14,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:34:14,000 INFO L87 Difference]: Start difference. First operand 181 states and 196 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 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) [2025-03-04 11:34:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:14,141 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2025-03-04 11:34:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:34:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 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 50 [2025-03-04 11:34:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:14,142 INFO L225 Difference]: With dead ends: 184 [2025-03-04 11:34:14,142 INFO L226 Difference]: Without dead ends: 183 [2025-03-04 11:34:14,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:34:14,143 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 23 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:14,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 270 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-04 11:34:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2025-03-04 11:34:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 133 states have (on average 1.3458646616541354) internal successors, (179), 168 states have internal predecessors, (179), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-04 11:34:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 197 transitions. [2025-03-04 11:34:14,156 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 197 transitions. Word has length 50 [2025-03-04 11:34:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:14,156 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 197 transitions. [2025-03-04 11:34:14,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 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) [2025-03-04 11:34:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 197 transitions. [2025-03-04 11:34:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-04 11:34:14,157 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:14,157 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:14,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-04 11:34:14,157 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:14,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1316421622, now seen corresponding path program 1 times [2025-03-04 11:34:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:14,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669898732] [2025-03-04 11:34:14,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:14,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 11:34:14,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 11:34:14,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:14,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:14,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47808959] [2025-03-04 11:34:14,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:14,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:14,175 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) [2025-03-04 11:34:14,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 11:34:14,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 11:34:14,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 11:34:14,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:14,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:14,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-03-04 11:34:14,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:14,273 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 [2025-03-04 11:34:14,276 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 [2025-03-04 11:34:14,407 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 [2025-03-04 11:34:14,455 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 [2025-03-04 11:34:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:14,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669898732] [2025-03-04 11:34:14,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47808959] [2025-03-04 11:34:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47808959] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:14,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2025-03-04 11:34:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129555811] [2025-03-04 11:34:14,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:14,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-04 11:34:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:14,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-04 11:34:14,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2025-03-04 11:34:14,952 INFO L87 Difference]: Start difference. First operand 182 states and 197 transitions. Second operand has 27 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 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) [2025-03-04 11:34:19,895 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 [] [2025-03-04 11:34:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:20,917 INFO L93 Difference]: Finished difference Result 251 states and 260 transitions. [2025-03-04 11:34:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-04 11:34:20,917 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 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 51 [2025-03-04 11:34:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:20,918 INFO L225 Difference]: With dead ends: 251 [2025-03-04 11:34:20,918 INFO L226 Difference]: Without dead ends: 250 [2025-03-04 11:34:20,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=361, Invalid=1895, Unknown=0, NotChecked=0, Total=2256 [2025-03-04 11:34:20,919 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 603 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:20,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 905 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1036 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2025-03-04 11:34:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-03-04 11:34:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 218. [2025-03-04 11:34:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.3757575757575757) internal successors, (227), 201 states have internal predecessors, (227), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2025-03-04 11:34:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2025-03-04 11:34:20,928 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 51 [2025-03-04 11:34:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:20,929 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2025-03-04 11:34:20,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 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) [2025-03-04 11:34:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2025-03-04 11:34:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-04 11:34:20,929 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:20,929 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:20,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 11:34:21,134 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,SelfDestructingSolverStorable32 [2025-03-04 11:34:21,134 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:21,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash -269040142, now seen corresponding path program 1 times [2025-03-04 11:34:21,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:21,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460815280] [2025-03-04 11:34:21,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:21,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:21,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 11:34:21,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 11:34:21,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:21,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:21,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:21,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460815280] [2025-03-04 11:34:21,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460815280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:34:21,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:34:21,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 11:34:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136923115] [2025-03-04 11:34:21,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:34:21,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:34:21,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:21,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:34:21,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:34:21,221 INFO L87 Difference]: Start difference. First operand 218 states and 251 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (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) [2025-03-04 11:34:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:21,347 INFO L93 Difference]: Finished difference Result 220 states and 252 transitions. [2025-03-04 11:34:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:34:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (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 51 [2025-03-04 11:34:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:21,351 INFO L225 Difference]: With dead ends: 220 [2025-03-04 11:34:21,351 INFO L226 Difference]: Without dead ends: 198 [2025-03-04 11:34:21,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:34:21,351 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:21,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 221 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-04 11:34:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2025-03-04 11:34:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 146 states have (on average 1.417808219178082) internal successors, (207), 182 states have internal predecessors, (207), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 230 transitions. [2025-03-04 11:34:21,363 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 230 transitions. Word has length 51 [2025-03-04 11:34:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:21,363 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 230 transitions. [2025-03-04 11:34:21,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (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) [2025-03-04 11:34:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 230 transitions. [2025-03-04 11:34:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-04 11:34:21,366 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:21,366 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:21,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-04 11:34:21,367 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_26_to_34_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:21,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2140602625, now seen corresponding path program 1 times [2025-03-04 11:34:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609088744] [2025-03-04 11:34:21,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:21,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 11:34:21,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 11:34:21,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:21,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:21,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:21,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609088744] [2025-03-04 11:34:21,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609088744] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:21,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501220693] [2025-03-04 11:34:21,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:21,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:21,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:21,537 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) [2025-03-04 11:34:21,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 11:34:21,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 11:34:21,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 11:34:21,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:21,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:21,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 11:34:21,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:21,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2025-03-04 11:34:21,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-04 11:34:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:21,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501220693] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:21,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:34:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2025-03-04 11:34:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074158233] [2025-03-04 11:34:21,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:21,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 11:34:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:21,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 11:34:21,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:34:21,909 INFO L87 Difference]: Start difference. First operand 198 states and 230 transitions. Second operand has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:34:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:22,234 INFO L93 Difference]: Finished difference Result 198 states and 230 transitions. [2025-03-04 11:34:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 11:34:22,234 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2025-03-04 11:34:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:22,235 INFO L225 Difference]: With dead ends: 198 [2025-03-04 11:34:22,235 INFO L226 Difference]: Without dead ends: 197 [2025-03-04 11:34:22,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2025-03-04 11:34:22,236 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 270 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:22,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 625 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:34:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-03-04 11:34:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2025-03-04 11:34:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.3972602739726028) internal successors, (204), 181 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2025-03-04 11:34:22,244 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 52 [2025-03-04 11:34:22,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:22,244 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2025-03-04 11:34:22,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:34:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2025-03-04 11:34:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 11:34:22,245 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:22,245 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:22,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 11:34:22,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:22,449 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:22,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1934171884, now seen corresponding path program 1 times [2025-03-04 11:34:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146891513] [2025-03-04 11:34:22,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:22,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 11:34:22,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 11:34:22,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:22,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146891513] [2025-03-04 11:34:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146891513] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23535233] [2025-03-04 11:34:22,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:22,638 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) [2025-03-04 11:34:22,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 11:34:22,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 11:34:22,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 11:34:22,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:22,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:22,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-04 11:34:22,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:22,739 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 [2025-03-04 11:34:22,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-04 11:34:22,873 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 [2025-03-04 11:34:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:22,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23535233] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:23,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:34:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2025-03-04 11:34:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087280607] [2025-03-04 11:34:23,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:23,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 11:34:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:23,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 11:34:23,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:34:23,013 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:34:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:23,417 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2025-03-04 11:34:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 11:34:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2025-03-04 11:34:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:23,419 INFO L225 Difference]: With dead ends: 224 [2025-03-04 11:34:23,419 INFO L226 Difference]: Without dead ends: 223 [2025-03-04 11:34:23,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2025-03-04 11:34:23,419 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 317 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:23,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 804 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:34:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-04 11:34:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2025-03-04 11:34:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.3835616438356164) internal successors, (202), 181 states have internal predecessors, (202), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 225 transitions. [2025-03-04 11:34:23,428 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 225 transitions. Word has length 53 [2025-03-04 11:34:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:23,428 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 225 transitions. [2025-03-04 11:34:23,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:34:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 225 transitions. [2025-03-04 11:34:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-04 11:34:23,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:23,429 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:23,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 11:34:23,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:23,630 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:23,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 170213789, now seen corresponding path program 1 times [2025-03-04 11:34:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801804094] [2025-03-04 11:34:23,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:23,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-04 11:34:23,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-04 11:34:23,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:23,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:23,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774235369] [2025-03-04 11:34:23,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:23,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:23,645 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) [2025-03-04 11:34:23,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 11:34:23,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-04 11:34:23,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-04 11:34:23,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:23,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:23,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 11:34:23,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:23,745 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 [2025-03-04 11:34:23,805 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 25 treesize of output 13 [2025-03-04 11:34:23,845 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 [2025-03-04 11:34:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:23,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801804094] [2025-03-04 11:34:24,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774235369] [2025-03-04 11:34:24,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774235369] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:24,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:24,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2025-03-04 11:34:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835482787] [2025-03-04 11:34:24,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:24,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 11:34:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:24,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 11:34:24,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-03-04 11:34:24,008 INFO L87 Difference]: Start difference. First operand 197 states and 225 transitions. Second operand has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:25,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-03-04 11:34:27,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-03-04 11:34:29,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-03-04 11:34:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:29,772 INFO L93 Difference]: Finished difference Result 197 states and 225 transitions. [2025-03-04 11:34:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:34:29,773 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 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 54 [2025-03-04 11:34:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:29,773 INFO L225 Difference]: With dead ends: 197 [2025-03-04 11:34:29,773 INFO L226 Difference]: Without dead ends: 196 [2025-03-04 11:34:29,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2025-03-04 11:34:29,774 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 217 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:29,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 619 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 351 Invalid, 3 Unknown, 0 Unchecked, 5.6s Time] [2025-03-04 11:34:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-03-04 11:34:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-03-04 11:34:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 146 states have (on average 1.3630136986301369) internal successors, (199), 180 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 222 transitions. [2025-03-04 11:34:29,781 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 222 transitions. Word has length 54 [2025-03-04 11:34:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:29,781 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 222 transitions. [2025-03-04 11:34:29,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 222 transitions. [2025-03-04 11:34:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-04 11:34:29,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:29,782 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:29,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:29,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:29,983 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:29,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:29,983 INFO L85 PathProgramCache]: Analyzing trace with hash 981660210, now seen corresponding path program 1 times [2025-03-04 11:34:29,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:29,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531633498] [2025-03-04 11:34:29,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:29,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-04 11:34:29,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-04 11:34:29,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:29,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:29,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549226237] [2025-03-04 11:34:29,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:29,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:30,000 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) [2025-03-04 11:34:30,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 11:34:30,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-04 11:34:30,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-04 11:34:30,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:30,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:30,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-04 11:34:30,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:30,092 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 [2025-03-04 11:34:30,155 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 [2025-03-04 11:34:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:30,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531633498] [2025-03-04 11:34:31,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549226237] [2025-03-04 11:34:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549226237] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:31,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:34:31,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-03-04 11:34:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268723592] [2025-03-04 11:34:31,624 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:31,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 11:34:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:31,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 11:34:31,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2025-03-04 11:34:31,624 INFO L87 Difference]: Start difference. First operand 196 states and 222 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2025-03-04 11:34:31,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:31,830 INFO L93 Difference]: Finished difference Result 203 states and 222 transitions. [2025-03-04 11:34:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 11:34:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 55 [2025-03-04 11:34:31,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:31,831 INFO L225 Difference]: With dead ends: 203 [2025-03-04 11:34:31,831 INFO L226 Difference]: Without dead ends: 202 [2025-03-04 11:34:31,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2025-03-04 11:34:31,832 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 91 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:31,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 555 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-04 11:34:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2025-03-04 11:34:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 146 states have (on average 1.356164383561644) internal successors, (198), 180 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 221 transitions. [2025-03-04 11:34:31,843 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 221 transitions. Word has length 55 [2025-03-04 11:34:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:31,843 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 221 transitions. [2025-03-04 11:34:31,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2025-03-04 11:34:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 221 transitions. [2025-03-04 11:34:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-04 11:34:31,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:31,843 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:31,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:32,044 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,SelfDestructingSolverStorable37 [2025-03-04 11:34:32,044 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:32,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:32,045 INFO L85 PathProgramCache]: Analyzing trace with hash 366695483, now seen corresponding path program 1 times [2025-03-04 11:34:32,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629033120] [2025-03-04 11:34:32,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:32,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:32,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-04 11:34:32,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-04 11:34:32,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:32,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067083586] [2025-03-04 11:34:32,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:32,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:32,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:32,066 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) [2025-03-04 11:34:32,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 11:34:32,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-04 11:34:32,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-04 11:34:32,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:32,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:32,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 73 conjuncts are in the unsatisfiable core [2025-03-04 11:34:32,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:32,165 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 [2025-03-04 11:34:32,168 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 [2025-03-04 11:34:32,282 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 [2025-03-04 11:34:32,325 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 [2025-03-04 11:34:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:32,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:32,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629033120] [2025-03-04 11:34:32,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:32,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067083586] [2025-03-04 11:34:32,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067083586] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:32,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:32,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2025-03-04 11:34:32,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267356360] [2025-03-04 11:34:32,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:32,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-04 11:34:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:32,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-04 11:34:32,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2025-03-04 11:34:32,997 INFO L87 Difference]: Start difference. First operand 196 states and 221 transitions. Second operand has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 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) [2025-03-04 11:34:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:35,971 INFO L93 Difference]: Finished difference Result 201 states and 221 transitions. [2025-03-04 11:34:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-04 11:34:35,971 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 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 56 [2025-03-04 11:34:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:35,972 INFO L225 Difference]: With dead ends: 201 [2025-03-04 11:34:35,972 INFO L226 Difference]: Without dead ends: 198 [2025-03-04 11:34:35,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=494, Invalid=2586, Unknown=0, NotChecked=0, Total=3080 [2025-03-04 11:34:35,973 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 370 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:35,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 889 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-04 11:34:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-04 11:34:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2025-03-04 11:34:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 178 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2025-03-04 11:34:35,982 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 56 [2025-03-04 11:34:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:35,982 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2025-03-04 11:34:35,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 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) [2025-03-04 11:34:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2025-03-04 11:34:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 11:34:35,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:35,983 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:35,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:36,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-04 11:34:36,184 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:36,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash 207042265, now seen corresponding path program 1 times [2025-03-04 11:34:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317455780] [2025-03-04 11:34:36,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:36,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 11:34:36,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 11:34:36,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:36,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421796180] [2025-03-04 11:34:36,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:36,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:36,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:36,203 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) [2025-03-04 11:34:36,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 11:34:36,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 11:34:36,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 11:34:36,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:36,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:36,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-03-04 11:34:36,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:36,298 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 [2025-03-04 11:34:36,301 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 [2025-03-04 11:34:36,425 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 [2025-03-04 11:34:36,468 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 [2025-03-04 11:34:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:36,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 11:34:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317455780] [2025-03-04 11:34:37,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421796180] [2025-03-04 11:34:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421796180] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:37,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2025-03-04 11:34:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123716748] [2025-03-04 11:34:37,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:37,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-04 11:34:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:37,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-04 11:34:37,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2025-03-04 11:34:37,216 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:40,113 INFO L93 Difference]: Finished difference Result 197 states and 215 transitions. [2025-03-04 11:34:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-04 11:34:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 5 states have call successors, (6), 5 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 58 [2025-03-04 11:34:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:40,115 INFO L225 Difference]: With dead ends: 197 [2025-03-04 11:34:40,115 INFO L226 Difference]: Without dead ends: 196 [2025-03-04 11:34:40,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=528, Invalid=2894, Unknown=0, NotChecked=0, Total=3422 [2025-03-04 11:34:40,117 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 344 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:40,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 753 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 11:34:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-03-04 11:34:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2025-03-04 11:34:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 177 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2025-03-04 11:34:40,128 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 58 [2025-03-04 11:34:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:40,129 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2025-03-04 11:34:40,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2025-03-04 11:34:40,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-04 11:34:40,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:40,129 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:40,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 11:34:40,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-04 11:34:40,330 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:40,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2123342958, now seen corresponding path program 1 times [2025-03-04 11:34:40,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:40,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712861388] [2025-03-04 11:34:40,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:40,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-04 11:34:40,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-04 11:34:40,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:40,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:40,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:40,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712861388] [2025-03-04 11:34:40,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712861388] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:40,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705084659] [2025-03-04 11:34:40,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:40,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:40,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:40,509 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) [2025-03-04 11:34:40,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 11:34:40,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-04 11:34:40,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-04 11:34:40,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:40,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:40,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 11:34:40,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:40,605 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 [2025-03-04 11:34:40,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-04 11:34:40,718 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 [2025-03-04 11:34:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:40,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:40,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705084659] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:40,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:34:40,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2025-03-04 11:34:40,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634724043] [2025-03-04 11:34:40,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:40,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 11:34:40,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:40,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 11:34:40,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:34:40,924 INFO L87 Difference]: Start difference. First operand 193 states and 212 transitions. Second operand has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:34:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:41,251 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2025-03-04 11:34:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 11:34:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2025-03-04 11:34:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:41,252 INFO L225 Difference]: With dead ends: 193 [2025-03-04 11:34:41,252 INFO L226 Difference]: Without dead ends: 192 [2025-03-04 11:34:41,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2025-03-04 11:34:41,253 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 173 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:41,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 747 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:34:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-04 11:34:41,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2025-03-04 11:34:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 146 states have (on average 1.273972602739726) internal successors, (186), 176 states have internal predecessors, (186), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 209 transitions. [2025-03-04 11:34:41,263 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 209 transitions. Word has length 59 [2025-03-04 11:34:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:41,263 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 209 transitions. [2025-03-04 11:34:41,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 11:34:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 209 transitions. [2025-03-04 11:34:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-04 11:34:41,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:41,264 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:41,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:41,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:41,465 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:41,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1334117748, now seen corresponding path program 1 times [2025-03-04 11:34:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:41,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088655147] [2025-03-04 11:34:41,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:41,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:41,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-04 11:34:41,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 11:34:41,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:41,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 11:34:41,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:41,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088655147] [2025-03-04 11:34:41,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088655147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:34:41,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:34:41,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:34:41,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743828957] [2025-03-04 11:34:41,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:34:41,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:34:41,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:41,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:34:41,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:34:41,595 INFO L87 Difference]: Start difference. First operand 192 states and 209 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:41,678 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2025-03-04 11:34:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 11:34:41,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2025-03-04 11:34:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:41,681 INFO L225 Difference]: With dead ends: 192 [2025-03-04 11:34:41,681 INFO L226 Difference]: Without dead ends: 191 [2025-03-04 11:34:41,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:34:41,681 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 57 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:41,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 570 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-03-04 11:34:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2025-03-04 11:34:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 146 states have (on average 1.2602739726027397) internal successors, (184), 175 states have internal predecessors, (184), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 207 transitions. [2025-03-04 11:34:41,692 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 207 transitions. Word has length 67 [2025-03-04 11:34:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:41,692 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 207 transitions. [2025-03-04 11:34:41,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 207 transitions. [2025-03-04 11:34:41,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-04 11:34:41,693 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:41,693 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:41,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-04 11:34:41,694 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:41,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1592022801, now seen corresponding path program 1 times [2025-03-04 11:34:41,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777365366] [2025-03-04 11:34:41,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:41,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-04 11:34:41,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-04 11:34:41,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:41,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-04 11:34:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777365366] [2025-03-04 11:34:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777365366] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470712003] [2025-03-04 11:34:41,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:41,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:41,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:41,845 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) [2025-03-04 11:34:41,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 11:34:41,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-04 11:34:41,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-04 11:34:41,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:41,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:41,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-04 11:34:41,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:41,949 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 [2025-03-04 11:34:42,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-04 11:34:42,114 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 [2025-03-04 11:34:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:42,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 11:34:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470712003] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:34:42,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:34:42,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 22 [2025-03-04 11:34:42,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330069455] [2025-03-04 11:34:42,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:42,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 11:34:42,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:42,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 11:34:42,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:34:42,267 INFO L87 Difference]: Start difference. First operand 191 states and 207 transitions. Second operand has 23 states, 19 states have (on average 8.157894736842104) internal successors, (155), 18 states have internal predecessors, (155), 8 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 11:34:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:42,575 INFO L93 Difference]: Finished difference Result 232 states and 246 transitions. [2025-03-04 11:34:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 11:34:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 8.157894736842104) internal successors, (155), 18 states have internal predecessors, (155), 8 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 68 [2025-03-04 11:34:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:42,576 INFO L225 Difference]: With dead ends: 232 [2025-03-04 11:34:42,576 INFO L226 Difference]: Without dead ends: 231 [2025-03-04 11:34:42,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=1245, Unknown=0, NotChecked=0, Total=1560 [2025-03-04 11:34:42,577 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 348 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:42,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 962 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-03-04 11:34:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 194. [2025-03-04 11:34:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 149 states have (on average 1.2416107382550337) internal successors, (185), 177 states have internal predecessors, (185), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2025-03-04 11:34:42,589 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 68 [2025-03-04 11:34:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:42,589 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2025-03-04 11:34:42,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 8.157894736842104) internal successors, (155), 18 states have internal predecessors, (155), 8 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 11:34:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2025-03-04 11:34:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 11:34:42,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:42,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:42,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 11:34:42,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:42,791 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:42,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash 28839845, now seen corresponding path program 1 times [2025-03-04 11:34:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:42,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081897462] [2025-03-04 11:34:42,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:42,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 11:34:42,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 11:34:42,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:42,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 11:34:43,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:43,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081897462] [2025-03-04 11:34:43,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081897462] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:43,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942709662] [2025-03-04 11:34:43,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:43,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:43,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:43,027 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) [2025-03-04 11:34:43,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 11:34:43,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 11:34:43,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 11:34:43,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:43,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:43,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-04 11:34:43,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:43,209 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 8 treesize of output 1 [2025-03-04 11:34:43,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-04 11:34:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:43,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:43,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942709662] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:43,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:43,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2025-03-04 11:34:43,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708193282] [2025-03-04 11:34:43,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:43,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 11:34:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:43,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 11:34:43,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:34:43,578 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:34:47,676 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 [0] [2025-03-04 11:34:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:47,837 INFO L93 Difference]: Finished difference Result 194 states and 208 transitions. [2025-03-04 11:34:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 11:34:47,837 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 72 [2025-03-04 11:34:47,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:47,838 INFO L225 Difference]: With dead ends: 194 [2025-03-04 11:34:47,838 INFO L226 Difference]: Without dead ends: 193 [2025-03-04 11:34:47,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:34:47,838 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 144 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:47,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 272 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-04 11:34:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-03-04 11:34:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2025-03-04 11:34:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 176 states have internal predecessors, (184), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 207 transitions. [2025-03-04 11:34:47,850 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 207 transitions. Word has length 72 [2025-03-04 11:34:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:47,850 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 207 transitions. [2025-03-04 11:34:47,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:34:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 207 transitions. [2025-03-04 11:34:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 11:34:47,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:47,851 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:47,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:48,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-04 11:34:48,055 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:48,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:48,055 INFO L85 PathProgramCache]: Analyzing trace with hash 400362829, now seen corresponding path program 1 times [2025-03-04 11:34:48,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:48,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426391821] [2025-03-04 11:34:48,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:48,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:48,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 11:34:48,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 11:34:48,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:48,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:34:48,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107354130] [2025-03-04 11:34:48,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:48,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:48,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:48,079 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:34:48,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-04 11:34:48,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 11:34:48,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 11:34:48,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:48,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:48,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-04 11:34:48,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:48,193 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 [2025-03-04 11:34:48,248 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 [2025-03-04 11:34:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:48,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:48,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426391821] [2025-03-04 11:34:48,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:34:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107354130] [2025-03-04 11:34:48,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107354130] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:48,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:34:48,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-03-04 11:34:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270967195] [2025-03-04 11:34:48,474 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:48,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 11:34:48,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:48,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 11:34:48,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:34:48,474 INFO L87 Difference]: Start difference. First operand 193 states and 207 transitions. Second operand has 12 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:48,671 INFO L93 Difference]: Finished difference Result 230 states and 242 transitions. [2025-03-04 11:34:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 11:34:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2025-03-04 11:34:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:48,672 INFO L225 Difference]: With dead ends: 230 [2025-03-04 11:34:48,672 INFO L226 Difference]: Without dead ends: 229 [2025-03-04 11:34:48,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:34:48,672 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 95 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:48,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 587 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:34:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-03-04 11:34:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 193. [2025-03-04 11:34:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 149 states have (on average 1.2281879194630871) internal successors, (183), 176 states have internal predecessors, (183), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 206 transitions. [2025-03-04 11:34:48,688 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 206 transitions. Word has length 72 [2025-03-04 11:34:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:48,688 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 206 transitions. [2025-03-04 11:34:48,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:34:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 206 transitions. [2025-03-04 11:34:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 11:34:48,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:48,688 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:48,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:48,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-04 11:34:48,893 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:48,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash 894035202, now seen corresponding path program 1 times [2025-03-04 11:34:48,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:48,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903631204] [2025-03-04 11:34:48,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:48,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:48,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 11:34:48,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 11:34:48,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:48,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 11:34:49,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:49,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903631204] [2025-03-04 11:34:49,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903631204] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:49,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185561472] [2025-03-04 11:34:49,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:49,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:49,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:49,078 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:34:49,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-04 11:34:49,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 11:34:49,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 11:34:49,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:49,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:49,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-04 11:34:49,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:49,273 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 8 treesize of output 1 [2025-03-04 11:34:49,384 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 [2025-03-04 11:34:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:34:49,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:34:49,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185561472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:49,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 11:34:49,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2025-03-04 11:34:49,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106053182] [2025-03-04 11:34:49,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 11:34:49,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 11:34:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:34:49,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 11:34:49,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:34:49,580 INFO L87 Difference]: Start difference. First operand 193 states and 206 transitions. Second operand has 13 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:34:53,673 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 [0] [2025-03-04 11:34:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:34:53,899 INFO L93 Difference]: Finished difference Result 193 states and 206 transitions. [2025-03-04 11:34:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 11:34:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 73 [2025-03-04 11:34:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:34:53,900 INFO L225 Difference]: With dead ends: 193 [2025-03-04 11:34:53,900 INFO L226 Difference]: Without dead ends: 192 [2025-03-04 11:34:53,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:34:53,900 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 164 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:34:53,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 217 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 199 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-04 11:34:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-04 11:34:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2025-03-04 11:34:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 149 states have (on average 1.221476510067114) internal successors, (182), 175 states have internal predecessors, (182), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 11:34:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2025-03-04 11:34:53,913 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 73 [2025-03-04 11:34:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:34:53,913 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2025-03-04 11:34:53,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:34:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2025-03-04 11:34:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-04 11:34:53,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:34:53,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:34:53,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-04 11:34:54,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-04 11:34:54,118 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-04 11:34:54,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:34:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1945287491, now seen corresponding path program 1 times [2025-03-04 11:34:54,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:34:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350225157] [2025-03-04 11:34:54,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:34:54,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 11:34:54,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 11:34:54,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:54,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-04 11:34:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:34:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350225157] [2025-03-04 11:34:54,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350225157] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:34:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456158387] [2025-03-04 11:34:54,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:34:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:34:54,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:34:54,258 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:34:54,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-04 11:34:54,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 11:34:54,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 11:34:54,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:34:54,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:34:54,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 11:34:54,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:34:54,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15