./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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_geo2-ll2.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 0e4188e08c3f48775d359529becc8db180857d5f7b1b125f480e88f6efe9d6c3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 02:45:32,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:45:32,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:45:32,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:45:32,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:45:32,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:45:32,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:45:32,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:45:32,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:45:32,232 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:45:32,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:45:32,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:45:32,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:45:32,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:45:32,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:45:32,234 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:45:32,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:45:32,234 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:45:32,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:45:32,235 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 -> 0e4188e08c3f48775d359529becc8db180857d5f7b1b125f480e88f6efe9d6c3 [2025-03-09 02:45:32,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:45:32,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:45:32,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:45:32,469 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:45:32,470 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:45:32,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c [2025-03-09 02:45:33,581 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c558831/20dec3cf3f024e9e99c57cf831a7ed8c/FLAGb4af2da79 [2025-03-09 02:45:33,847 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:45:33,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c [2025-03-09 02:45:33,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c558831/20dec3cf3f024e9e99c57cf831a7ed8c/FLAGb4af2da79 [2025-03-09 02:45:34,159 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c558831/20dec3cf3f024e9e99c57cf831a7ed8c [2025-03-09 02:45:34,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:45:34,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:45:34,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:45:34,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:45:34,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:45:34,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb41bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34, skipping insertion in model container [2025-03-09 02:45:34,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:45:34,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:45:34,315 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:45:34,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:45:34,347 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:45:34,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34 WrapperNode [2025-03-09 02:45:34,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:45:34,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:45:34,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:45:34,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:45:34,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,375 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2025-03-09 02:45:34,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:45:34,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:45:34,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:45:34,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:45:34,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,406 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 4, 2, 7, 7, 5]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 1, 2, 1, 2]. [2025-03-09 02:45:34,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,414 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:45:34,423 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:45:34,426 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:45:34,427 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:45:34,428 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (1/1) ... [2025-03-09 02:45:34,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:45:34,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:34,461 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) [2025-03-09 02:45:34,463 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 [2025-03-09 02:45:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:45:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:45:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 02:45:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2025-03-09 02:45:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:45:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 02:45:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-09 02:45:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-09 02:45:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 02:45:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 02:45:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 02:45:34,559 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:45:34,561 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:45:34,788 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L77: call ULTIMATE.dealloc(main_~#z~0#1.base, main_~#z~0#1.offset);havoc main_~#z~0#1.base, main_~#z~0#1.offset;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_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~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_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-03-09 02:45:34,805 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2025-03-09 02:45:34,805 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:45:34,812 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:45:34,812 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:45:34,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:45:34 BoogieIcfgContainer [2025-03-09 02:45:34,812 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:45:34,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:45:34,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:45:34,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:45:34,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:45:34" (1/3) ... [2025-03-09 02:45:34,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109f0ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:45:34, skipping insertion in model container [2025-03-09 02:45:34,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:45:34" (2/3) ... [2025-03-09 02:45:34,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109f0ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:45:34, skipping insertion in model container [2025-03-09 02:45:34,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:45:34" (3/3) ... [2025-03-09 02:45:34,820 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll2.c [2025-03-09 02:45:34,831 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:45:34,832 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_geo2-ll2.c that has 3 procedures, 79 locations, 1 initial locations, 0 loop locations, and 28 error locations. [2025-03-09 02:45:34,871 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:45:34,879 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;@547fb375, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:45:34,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-09 02:45:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 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) [2025-03-09 02:45:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 02:45:34,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:34,887 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 02:45:34,888 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_30_to_38_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:34,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1189240717, now seen corresponding path program 1 times [2025-03-09 02:45:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370299091] [2025-03-09 02:45:34,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:34,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:34,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 02:45:35,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 02:45:35,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:35,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561899551] [2025-03-09 02:45:35,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:35,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:35,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:35,027 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) [2025-03-09 02:45:35,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 02:45:35,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 02:45:35,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 02:45:35,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:35,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:35,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 02:45:35,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:35,188 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 [2025-03-09 02:45:35,204 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 [2025-03-09 02:45:35,273 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 [2025-03-09 02:45:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:35,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370299091] [2025-03-09 02:45:35,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561899551] [2025-03-09 02:45:35,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561899551] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:35,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:35,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818850545] [2025-03-09 02:45:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:35,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:35,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:35,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:35,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:45:35,317 INFO L87 Difference]: Start difference. First operand has 79 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 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) [2025-03-09 02:45:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:35,518 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2025-03-09 02:45:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:45:35,519 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 [2025-03-09 02:45:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:35,524 INFO L225 Difference]: With dead ends: 200 [2025-03-09 02:45:35,524 INFO L226 Difference]: Without dead ends: 118 [2025-03-09 02:45:35,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:35,528 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 89 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:35,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 300 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-03-09 02:45:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2025-03-09 02:45:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 82 states have internal predecessors, (91), 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) [2025-03-09 02:45:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2025-03-09 02:45:35,556 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 6 [2025-03-09 02:45:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:35,556 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2025-03-09 02:45:35,557 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) [2025-03-09 02:45:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2025-03-09 02:45:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 02:45:35,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:35,557 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:45:35,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 02:45:35,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-09 02:45:35,760 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:35,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1788243446, now seen corresponding path program 1 times [2025-03-09 02:45:35,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:35,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327565826] [2025-03-09 02:45:35,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:35,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 02:45:35,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 02:45:35,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:35,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:35,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207116195] [2025-03-09 02:45:35,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:35,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:35,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:35,799 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) [2025-03-09 02:45:35,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 02:45:35,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 02:45:35,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 02:45:35,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:35,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:35,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 02:45:35,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:35,869 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 [2025-03-09 02:45:35,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 02:45:35,905 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 [2025-03-09 02:45:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:35,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327565826] [2025-03-09 02:45:35,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207116195] [2025-03-09 02:45:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207116195] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:35,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833046436] [2025-03-09 02:45:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:35,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:35,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:35,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:45:35,924 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:45:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:36,033 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2025-03-09 02:45:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:45:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-09 02:45:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:36,034 INFO L225 Difference]: With dead ends: 118 [2025-03-09 02:45:36,034 INFO L226 Difference]: Without dead ends: 116 [2025-03-09 02:45:36,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:36,035 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:36,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 271 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-09 02:45:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2025-03-09 02:45:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6481481481481481) internal successors, (89), 82 states have internal predecessors, (89), 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) [2025-03-09 02:45:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2025-03-09 02:45:36,041 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 7 [2025-03-09 02:45:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:36,041 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2025-03-09 02:45:36,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:45:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2025-03-09 02:45:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 02:45:36,042 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:36,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:45:36,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 02:45:36,246 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,SelfDestructingSolverStorable1 [2025-03-09 02:45:36,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:36,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1213832913, now seen corresponding path program 1 times [2025-03-09 02:45:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:36,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027010481] [2025-03-09 02:45:36,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:36,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 02:45:36,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 02:45:36,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:36,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027010481] [2025-03-09 02:45:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027010481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:36,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 02:45:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060429342] [2025-03-09 02:45:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:36,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:45:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:36,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:45:36,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:45:36,553 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2025-03-09 02:45:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:36,714 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2025-03-09 02:45:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:45:36,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 10 [2025-03-09 02:45:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:36,715 INFO L225 Difference]: With dead ends: 116 [2025-03-09 02:45:36,715 INFO L226 Difference]: Without dead ends: 115 [2025-03-09 02:45:36,715 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 [2025-03-09 02:45:36,717 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 75 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:36,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 326 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-03-09 02:45:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2025-03-09 02:45:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 82 states have internal predecessors, (88), 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) [2025-03-09 02:45:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2025-03-09 02:45:36,726 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 10 [2025-03-09 02:45:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:36,726 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2025-03-09 02:45:36,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2025-03-09 02:45:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2025-03-09 02:45:36,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 02:45:36,727 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:36,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:45:36,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 02:45:36,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:36,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1025885362, now seen corresponding path program 1 times [2025-03-09 02:45:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:36,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292002445] [2025-03-09 02:45:36,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:36,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 02:45:36,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 02:45:36,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:36,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:36,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292002445] [2025-03-09 02:45:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292002445] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:36,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:36,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957413633] [2025-03-09 02:45:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:36,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:36,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:36,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:45:36,899 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2025-03-09 02:45:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:37,034 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2025-03-09 02:45:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:45:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 11 [2025-03-09 02:45:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:37,036 INFO L225 Difference]: With dead ends: 115 [2025-03-09 02:45:37,037 INFO L226 Difference]: Without dead ends: 114 [2025-03-09 02:45:37,038 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 [2025-03-09 02:45:37,038 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 72 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:37,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 286 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-09 02:45:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2025-03-09 02:45:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 82 states have internal predecessors, (87), 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) [2025-03-09 02:45:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2025-03-09 02:45:37,046 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 11 [2025-03-09 02:45:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:37,046 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2025-03-09 02:45:37,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2025-03-09 02:45:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2025-03-09 02:45:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 02:45:37,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:37,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:45:37,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 02:45:37,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:37,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:37,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1737675149, now seen corresponding path program 1 times [2025-03-09 02:45:37,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189000986] [2025-03-09 02:45:37,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:37,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 02:45:37,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 02:45:37,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:37,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414803150] [2025-03-09 02:45:37,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:37,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:37,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:37,062 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) [2025-03-09 02:45:37,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 02:45:37,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 02:45:37,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 02:45:37,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:37,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:37,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-09 02:45:37,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:37,145 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 [2025-03-09 02:45:37,151 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 [2025-03-09 02:45:37,187 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 [2025-03-09 02:45:37,325 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 [2025-03-09 02:45:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:37,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189000986] [2025-03-09 02:45:37,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414803150] [2025-03-09 02:45:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414803150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:37,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:37,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 02:45:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411622958] [2025-03-09 02:45:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:37,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 02:45:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:37,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 02:45:37,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:37,350 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2025-03-09 02:45:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:37,622 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2025-03-09 02:45:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 02:45:37,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 12 [2025-03-09 02:45:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:37,623 INFO L225 Difference]: With dead ends: 118 [2025-03-09 02:45:37,623 INFO L226 Difference]: Without dead ends: 117 [2025-03-09 02:45:37,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-03-09 02:45:37,624 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:37,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 370 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-09 02:45:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 89. [2025-03-09 02:45:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 82 states have internal predecessors, (86), 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) [2025-03-09 02:45:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2025-03-09 02:45:37,632 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 12 [2025-03-09 02:45:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:37,632 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2025-03-09 02:45:37,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2025-03-09 02:45:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2025-03-09 02:45:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 02:45:37,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:37,632 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:45:37,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 02:45:37,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:37,833 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:37,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1966645232, now seen corresponding path program 1 times [2025-03-09 02:45:37,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:37,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132409030] [2025-03-09 02:45:37,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:37,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:37,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 02:45:37,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 02:45:37,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:37,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589683647] [2025-03-09 02:45:37,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:37,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:37,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:37,848 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) [2025-03-09 02:45:37,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 02:45:37,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 02:45:37,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 02:45:37,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:37,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:37,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-09 02:45:37,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:37,930 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 [2025-03-09 02:45:37,932 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 [2025-03-09 02:45:37,967 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 [2025-03-09 02:45:38,054 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 [2025-03-09 02:45:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:38,087 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:38,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132409030] [2025-03-09 02:45:38,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589683647] [2025-03-09 02:45:38,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589683647] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:38,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:38,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 02:45:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696029521] [2025-03-09 02:45:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:38,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 02:45:38,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:38,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 02:45:38,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:38,089 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:45:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:38,323 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2025-03-09 02:45:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 02:45:38,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-09 02:45:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:38,323 INFO L225 Difference]: With dead ends: 117 [2025-03-09 02:45:38,323 INFO L226 Difference]: Without dead ends: 116 [2025-03-09 02:45:38,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-03-09 02:45:38,324 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:38,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 369 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-09 02:45:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2025-03-09 02:45:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 82 states have internal predecessors, (85), 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) [2025-03-09 02:45:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2025-03-09 02:45:38,330 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 13 [2025-03-09 02:45:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:38,330 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2025-03-09 02:45:38,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:45:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2025-03-09 02:45:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 02:45:38,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:38,331 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:45:38,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 02:45:38,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:38,535 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_30_to_38_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:38,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash -836460053, now seen corresponding path program 1 times [2025-03-09 02:45:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571983353] [2025-03-09 02:45:38,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:38,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 02:45:38,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 02:45:38,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:38,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288188621] [2025-03-09 02:45:38,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:38,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:38,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:38,550 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) [2025-03-09 02:45:38,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 02:45:38,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 02:45:38,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 02:45:38,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:38,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:38,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-09 02:45:38,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:38,617 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 [2025-03-09 02:45:38,621 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 [2025-03-09 02:45:38,732 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 [2025-03-09 02:45:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:38,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571983353] [2025-03-09 02:45:38,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288188621] [2025-03-09 02:45:38,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288188621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:38,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:38,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 02:45:38,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880158135] [2025-03-09 02:45:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:38,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 02:45:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:38,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 02:45:38,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:38,757 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) [2025-03-09 02:45:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:38,955 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2025-03-09 02:45:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:45:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 [2025-03-09 02:45:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:38,956 INFO L225 Difference]: With dead ends: 112 [2025-03-09 02:45:38,956 INFO L226 Difference]: Without dead ends: 110 [2025-03-09 02:45:38,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-09 02:45:38,957 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 64 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:38,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 356 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-09 02:45:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2025-03-09 02:45:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.537037037037037) internal successors, (83), 82 states have internal predecessors, (83), 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) [2025-03-09 02:45:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2025-03-09 02:45:38,962 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 14 [2025-03-09 02:45:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:38,962 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2025-03-09 02:45:38,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) [2025-03-09 02:45:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2025-03-09 02:45:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-09 02:45:38,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:38,964 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] [2025-03-09 02:45:38,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 02:45:39,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:39,168 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_30_to_38_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:39,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1871914566, now seen corresponding path program 1 times [2025-03-09 02:45:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531367347] [2025-03-09 02:45:39,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:39,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 02:45:39,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 02:45:39,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:39,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531367347] [2025-03-09 02:45:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531367347] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:39,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:39,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 02:45:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195728032] [2025-03-09 02:45:39,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:39,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:45:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:39,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:45:39,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:45:39,302 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-03-09 02:45:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:39,363 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2025-03-09 02:45:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:45:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 23 [2025-03-09 02:45:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:39,364 INFO L225 Difference]: With dead ends: 114 [2025-03-09 02:45:39,364 INFO L226 Difference]: Without dead ends: 113 [2025-03-09 02:45:39,364 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 [2025-03-09 02:45:39,365 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 44 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:39,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 331 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:45:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-09 02:45:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2025-03-09 02:45:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 83 states have internal predecessors, (84), 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) [2025-03-09 02:45:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2025-03-09 02:45:39,371 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 23 [2025-03-09 02:45:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:39,371 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2025-03-09 02:45:39,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-03-09 02:45:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2025-03-09 02:45:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-09 02:45:39,372 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:39,372 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] [2025-03-09 02:45:39,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 02:45:39,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:39,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2100190615, now seen corresponding path program 1 times [2025-03-09 02:45:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:39,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376008522] [2025-03-09 02:45:39,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:39,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:45:39,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:45:39,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:39,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:39,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376008522] [2025-03-09 02:45:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376008522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:39,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 02:45:39,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379026653] [2025-03-09 02:45:39,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:39,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:45:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:39,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:45:39,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:45:39,483 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2025-03-09 02:45:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:39,549 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2025-03-09 02:45:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:45:39,550 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), 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 24 [2025-03-09 02:45:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:39,550 INFO L225 Difference]: With dead ends: 113 [2025-03-09 02:45:39,550 INFO L226 Difference]: Without dead ends: 112 [2025-03-09 02:45:39,551 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 [2025-03-09 02:45:39,551 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 41 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:39,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 383 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:45:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-09 02:45:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 91. [2025-03-09 02:45:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 84 states have internal predecessors, (85), 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) [2025-03-09 02:45:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2025-03-09 02:45:39,558 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 24 [2025-03-09 02:45:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:39,558 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2025-03-09 02:45:39,558 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), 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) [2025-03-09 02:45:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2025-03-09 02:45:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-09 02:45:39,559 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:39,559 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] [2025-03-09 02:45:39,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 02:45:39,559 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_30_to_38_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:39,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash -681399644, now seen corresponding path program 1 times [2025-03-09 02:45:39,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:39,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282535066] [2025-03-09 02:45:39,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:39,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:39,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 02:45:39,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 02:45:39,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:39,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138564333] [2025-03-09 02:45:39,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:39,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:39,579 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) [2025-03-09 02:45:39,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 02:45:39,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 02:45:39,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 02:45:39,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:39,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:39,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:45:39,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:43,725 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_func_to_recursive_line_30_to_38_0_~x.base_BEFORE_CALL_1 Int) (v_func_to_recursive_line_30_to_38_0_~x.offset_BEFORE_CALL_1 Int) (v_func_to_recursive_line_30_to_38_0_~z.offset_BEFORE_CALL_1 Int) (v_func_to_recursive_line_30_to_38_0_~z.base_BEFORE_CALL_1 Int)) (<= 0 (+ 9223372036854775808 (* (select (select |c_#memory_int#4| v_func_to_recursive_line_30_to_38_0_~z.base_BEFORE_CALL_1) v_func_to_recursive_line_30_to_38_0_~z.offset_BEFORE_CALL_1) (select (select |c_#memory_int#3| v_func_to_recursive_line_30_to_38_0_~x.base_BEFORE_CALL_1) v_func_to_recursive_line_30_to_38_0_~x.offset_BEFORE_CALL_1))))) is different from true [2025-03-09 02:45:43,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-09 02:45:43,785 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 19 treesize of output 11 [2025-03-09 02:45:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:43,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282535066] [2025-03-09 02:45:43,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138564333] [2025-03-09 02:45:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138564333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608622555] [2025-03-09 02:45:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:43,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:43,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:43,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2025-03-09 02:45:43,793 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-03-09 02:45:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:43,885 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2025-03-09 02:45:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:45:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 25 [2025-03-09 02:45:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:43,887 INFO L225 Difference]: With dead ends: 93 [2025-03-09 02:45:43,887 INFO L226 Difference]: Without dead ends: 90 [2025-03-09 02:45:43,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-03-09 02:45:43,887 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 33 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:43,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 146 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2025-03-09 02:45:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-03-09 02:45:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-03-09 02:45:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 57 states have (on average 1.456140350877193) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:45:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2025-03-09 02:45:43,892 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 25 [2025-03-09 02:45:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:43,892 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2025-03-09 02:45:43,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-03-09 02:45:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2025-03-09 02:45:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-09 02:45:43,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:43,893 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] [2025-03-09 02:45:43,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 02:45:44,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:44,093 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:44,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 350599923, now seen corresponding path program 1 times [2025-03-09 02:45:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443429630] [2025-03-09 02:45:44,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:44,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:44,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 02:45:44,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 02:45:44,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:44,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:44,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366680138] [2025-03-09 02:45:44,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:44,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:44,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:44,110 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) [2025-03-09 02:45:44,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 02:45:44,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 02:45:44,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 02:45:44,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:44,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:44,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:45:44,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:44,196 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 [2025-03-09 02:45:44,202 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 [2025-03-09 02:45:44,292 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 [2025-03-09 02:45:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:44,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443429630] [2025-03-09 02:45:44,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:44,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366680138] [2025-03-09 02:45:44,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366680138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:44,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:44,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504570848] [2025-03-09 02:45:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:44,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:44,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:44,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:45:44,304 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-03-09 02:45:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:44,411 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2025-03-09 02:45:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:45:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 26 [2025-03-09 02:45:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:44,412 INFO L225 Difference]: With dead ends: 107 [2025-03-09 02:45:44,412 INFO L226 Difference]: Without dead ends: 105 [2025-03-09 02:45:44,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:44,413 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 79 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:44,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 148 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-09 02:45:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2025-03-09 02:45:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 85 states have internal predecessors, (88), 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) [2025-03-09 02:45:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2025-03-09 02:45:44,422 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 26 [2025-03-09 02:45:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:44,422 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2025-03-09 02:45:44,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-03-09 02:45:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2025-03-09 02:45:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-09 02:45:44,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:44,424 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] [2025-03-09 02:45:44,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 02:45:44,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:44,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:44,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:44,628 INFO L85 PathProgramCache]: Analyzing trace with hash 351447495, now seen corresponding path program 1 times [2025-03-09 02:45:44,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:44,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119458959] [2025-03-09 02:45:44,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:44,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:44,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 02:45:44,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 02:45:44,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:44,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:44,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113205223] [2025-03-09 02:45:44,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:44,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:44,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:44,649 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) [2025-03-09 02:45:44,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 02:45:44,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 02:45:44,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 02:45:44,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:44,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:44,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:45:44,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:44,972 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 21 treesize of output 13 [2025-03-09 02:45:44,975 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 [2025-03-09 02:45:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:45,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119458959] [2025-03-09 02:45:45,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113205223] [2025-03-09 02:45:45,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113205223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:45,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:45,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:45,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389545326] [2025-03-09 02:45:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:45,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:45,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:45,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:45:45,153 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2025-03-09 02:45:49,229 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] [2025-03-09 02:45:53,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:53,936 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2025-03-09 02:45:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:45:53,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 26 [2025-03-09 02:45:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:53,937 INFO L225 Difference]: With dead ends: 94 [2025-03-09 02:45:53,937 INFO L226 Difference]: Without dead ends: 92 [2025-03-09 02:45:53,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-09 02:45:53,938 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 55 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:53,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 152 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2025-03-09 02:45:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-09 02:45:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-03-09 02:45:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 83 states have internal predecessors, (86), 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) [2025-03-09 02:45:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2025-03-09 02:45:53,943 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 26 [2025-03-09 02:45:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:53,944 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2025-03-09 02:45:53,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2025-03-09 02:45:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2025-03-09 02:45:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-09 02:45:53,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:53,944 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] [2025-03-09 02:45:53,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 02:45:54,145 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,SelfDestructingSolverStorable11 [2025-03-09 02:45:54,145 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:54,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:54,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2016304237, now seen corresponding path program 1 times [2025-03-09 02:45:54,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:54,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494317946] [2025-03-09 02:45:54,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:54,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 02:45:54,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 02:45:54,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:54,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187879128] [2025-03-09 02:45:54,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:54,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:54,167 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) [2025-03-09 02:45:54,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 02:45:54,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 02:45:54,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 02:45:54,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:54,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:54,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 02:45:54,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:54,245 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 [2025-03-09 02:45:54,247 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 [2025-03-09 02:45:54,357 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 [2025-03-09 02:45:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:45:54,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:45:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:45:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494317946] [2025-03-09 02:45:54,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:45:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187879128] [2025-03-09 02:45:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187879128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:45:54,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:45:54,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:45:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920046442] [2025-03-09 02:45:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:45:54,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:45:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:45:54,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:45:54,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:45:54,376 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2025-03-09 02:45:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:45:54,532 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2025-03-09 02:45:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:45:54,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 27 [2025-03-09 02:45:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:45:54,534 INFO L225 Difference]: With dead ends: 103 [2025-03-09 02:45:54,534 INFO L226 Difference]: Without dead ends: 101 [2025-03-09 02:45:54,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:45:54,534 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 74 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:45:54,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 146 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:45:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-09 02:45:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2025-03-09 02:45:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 84 states have internal predecessors, (86), 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) [2025-03-09 02:45:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2025-03-09 02:45:54,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 27 [2025-03-09 02:45:54,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:45:54,541 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2025-03-09 02:45:54,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2025-03-09 02:45:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2025-03-09 02:45:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 02:45:54,542 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:45:54,542 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] [2025-03-09 02:45:54,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 02:45:54,742 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,SelfDestructingSolverStorable12 [2025-03-09 02:45:54,743 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:45:54,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:45:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1157967008, now seen corresponding path program 1 times [2025-03-09 02:45:54,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:45:54,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339316779] [2025-03-09 02:45:54,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:45:54,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 02:45:54,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 02:45:54,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:54,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:45:54,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425307011] [2025-03-09 02:45:54,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:45:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:45:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:45:54,763 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) [2025-03-09 02:45:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 02:45:54,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 02:45:54,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 02:45:54,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:45:54,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:45:54,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-09 02:45:54,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:45:54,853 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 [2025-03-09 02:45:54,860 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 [2025-03-09 02:45:54,893 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 [2025-03-09 02:46:03,293 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 [2025-03-09 02:46:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:03,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:46:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339316779] [2025-03-09 02:46:03,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425307011] [2025-03-09 02:46:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425307011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:03,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 02:46:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378279896] [2025-03-09 02:46:03,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:03,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:46:03,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:03,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:46:03,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=55, Unknown=2, NotChecked=0, Total=72 [2025-03-09 02:46:03,322 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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) [2025-03-09 02:46:07,338 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] [2025-03-09 02:46:11,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:46:15,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:46:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:19,755 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2025-03-09 02:46:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 02:46:19,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 29 [2025-03-09 02:46:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:19,757 INFO L225 Difference]: With dead ends: 117 [2025-03-09 02:46:19,757 INFO L226 Difference]: Without dead ends: 116 [2025-03-09 02:46:19,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=58, Invalid=179, Unknown=3, NotChecked=0, Total=240 [2025-03-09 02:46:19,757 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 99 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:19,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 395 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2025-03-09 02:46:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-09 02:46:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2025-03-09 02:46:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 92 states have internal predecessors, (94), 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) [2025-03-09 02:46:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2025-03-09 02:46:19,764 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 29 [2025-03-09 02:46:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:19,764 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2025-03-09 02:46:19,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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) [2025-03-09 02:46:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2025-03-09 02:46:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 02:46:19,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:19,765 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] [2025-03-09 02:46:19,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 02:46:19,965 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,SelfDestructingSolverStorable13 [2025-03-09 02:46:19,965 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:19,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1693113071, now seen corresponding path program 1 times [2025-03-09 02:46:19,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133140572] [2025-03-09 02:46:19,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:19,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:46:19,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:46:19,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:19,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:20,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133140572] [2025-03-09 02:46:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133140572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:20,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:46:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087814972] [2025-03-09 02:46:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:20,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:46:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:20,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:46:20,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:46:20,116 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2025-03-09 02:46:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:20,224 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2025-03-09 02:46:20,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:46:20,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 30 [2025-03-09 02:46:20,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:20,225 INFO L225 Difference]: With dead ends: 111 [2025-03-09 02:46:20,225 INFO L226 Difference]: Without dead ends: 110 [2025-03-09 02:46:20,225 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 [2025-03-09 02:46:20,225 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:20,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 193 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:46:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-09 02:46:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2025-03-09 02:46:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 93 states have internal predecessors, (95), 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) [2025-03-09 02:46:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2025-03-09 02:46:20,235 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 30 [2025-03-09 02:46:20,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:20,235 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2025-03-09 02:46:20,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2025-03-09 02:46:20,236 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2025-03-09 02:46:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 02:46:20,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:20,237 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] [2025-03-09 02:46:20,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 02:46:20,238 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:20,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1537238909, now seen corresponding path program 1 times [2025-03-09 02:46:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084908222] [2025-03-09 02:46:20,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:20,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:46:20,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:46:20,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:20,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608071841] [2025-03-09 02:46:20,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:20,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:20,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:20,259 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) [2025-03-09 02:46:20,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 02:46:20,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:46:20,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:46:20,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:20,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:20,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-09 02:46:20,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:20,346 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 [2025-03-09 02:46:20,349 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 [2025-03-09 02:46:20,386 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 [2025-03-09 02:46:28,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 02:46:28,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2025-03-09 02:46:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:28,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:46:28,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084908222] [2025-03-09 02:46:28,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608071841] [2025-03-09 02:46:28,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608071841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:28,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:28,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 02:46:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699407326] [2025-03-09 02:46:28,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:28,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 02:46:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:28,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 02:46:28,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=68, Unknown=2, NotChecked=0, Total=90 [2025-03-09 02:46:28,912 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 10 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 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) [2025-03-09 02:46:32,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:46:41,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:46:45,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:46:49,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:46:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:49,292 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2025-03-09 02:46:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:46:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 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 30 [2025-03-09 02:46:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:49,293 INFO L225 Difference]: With dead ends: 115 [2025-03-09 02:46:49,293 INFO L226 Difference]: Without dead ends: 114 [2025-03-09 02:46:49,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=59, Invalid=178, Unknown=3, NotChecked=0, Total=240 [2025-03-09 02:46:49,294 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 85 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:49,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 359 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2025-03-09 02:46:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-09 02:46:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2025-03-09 02:46:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 94 states have internal predecessors, (96), 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) [2025-03-09 02:46:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2025-03-09 02:46:49,300 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 30 [2025-03-09 02:46:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:49,300 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2025-03-09 02:46:49,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 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) [2025-03-09 02:46:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2025-03-09 02:46:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-09 02:46:49,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:49,300 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] [2025-03-09 02:46:49,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 02:46:49,501 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,SelfDestructingSolverStorable15 [2025-03-09 02:46:49,501 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:49,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 946897679, now seen corresponding path program 1 times [2025-03-09 02:46:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315335440] [2025-03-09 02:46:49,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:49,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:46:49,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:46:49,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:49,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:49,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:49,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315335440] [2025-03-09 02:46:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315335440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:46:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68482112] [2025-03-09 02:46:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:49,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:46:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:49,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:46:49,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:46:49,589 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2025-03-09 02:46:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:49,701 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2025-03-09 02:46:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:46:49,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 31 [2025-03-09 02:46:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:49,702 INFO L225 Difference]: With dead ends: 112 [2025-03-09 02:46:49,702 INFO L226 Difference]: Without dead ends: 111 [2025-03-09 02:46:49,702 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 [2025-03-09 02:46:49,702 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 26 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:49,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 161 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:46:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-03-09 02:46:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2025-03-09 02:46:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 95 states have internal predecessors, (97), 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) [2025-03-09 02:46:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2025-03-09 02:46:49,708 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 31 [2025-03-09 02:46:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:49,708 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2025-03-09 02:46:49,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2025-03-09 02:46:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2025-03-09 02:46:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-09 02:46:49,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:49,709 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] [2025-03-09 02:46:49,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 02:46:49,709 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:49,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash -710942995, now seen corresponding path program 1 times [2025-03-09 02:46:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899524411] [2025-03-09 02:46:49,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:49,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 02:46:49,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 02:46:49,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:49,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:49,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007558502] [2025-03-09 02:46:49,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:49,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:49,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:49,724 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) [2025-03-09 02:46:49,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 02:46:49,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 02:46:49,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 02:46:49,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:49,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:49,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-09 02:46:49,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:49,819 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 [2025-03-09 02:46:49,826 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 [2025-03-09 02:46:49,829 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 [2025-03-09 02:46:50,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 02:46:50,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2025-03-09 02:46:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:50,067 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:46:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899524411] [2025-03-09 02:46:50,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007558502] [2025-03-09 02:46:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007558502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:50,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:50,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 02:46:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821591385] [2025-03-09 02:46:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:50,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:46:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:50,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:46:50,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-09 02:46:50,068 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 9 states, 7 states have (on average 4.0) internal successors, (28), 9 states have internal predecessors, (28), 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) [2025-03-09 02:46:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:50,201 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2025-03-09 02:46:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:46:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 9 states have internal predecessors, (28), 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 32 [2025-03-09 02:46:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:50,202 INFO L225 Difference]: With dead ends: 110 [2025-03-09 02:46:50,202 INFO L226 Difference]: Without dead ends: 109 [2025-03-09 02:46:50,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:46:50,203 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 104 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:50,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 171 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:46:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-09 02:46:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2025-03-09 02:46:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 96 states have internal predecessors, (98), 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) [2025-03-09 02:46:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2025-03-09 02:46:50,209 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 32 [2025-03-09 02:46:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:50,209 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2025-03-09 02:46:50,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 9 states have internal predecessors, (28), 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) [2025-03-09 02:46:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2025-03-09 02:46:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-09 02:46:50,210 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:50,210 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] [2025-03-09 02:46:50,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 02:46:50,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 02:46:50,414 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:50,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:50,414 INFO L85 PathProgramCache]: Analyzing trace with hash -564396339, now seen corresponding path program 1 times [2025-03-09 02:46:50,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:50,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752398757] [2025-03-09 02:46:50,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:50,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:50,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 02:46:50,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 02:46:50,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:50,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:50,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151421599] [2025-03-09 02:46:50,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:50,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:50,428 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) [2025-03-09 02:46:50,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 02:46:50,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 02:46:50,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 02:46:50,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:50,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:50,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:46:50,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:50,509 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 [2025-03-09 02:46:50,512 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 [2025-03-09 02:46:50,629 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 [2025-03-09 02:46:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:50,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:46:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752398757] [2025-03-09 02:46:50,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151421599] [2025-03-09 02:46:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151421599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:50,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:50,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 02:46:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150736041] [2025-03-09 02:46:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:50,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:46:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:50,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:46:50,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:46:50,642 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 6 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:46:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:50,740 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2025-03-09 02:46:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:46:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2025-03-09 02:46:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:50,741 INFO L225 Difference]: With dead ends: 110 [2025-03-09 02:46:50,741 INFO L226 Difference]: Without dead ends: 109 [2025-03-09 02:46:50,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:46:50,742 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 78 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:50,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 159 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:46:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-09 02:46:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2025-03-09 02:46:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 75 states have (on average 1.32) internal successors, (99), 97 states have internal predecessors, (99), 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) [2025-03-09 02:46:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2025-03-09 02:46:50,749 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 33 [2025-03-09 02:46:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:50,749 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2025-03-09 02:46:50,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:46:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2025-03-09 02:46:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-09 02:46:50,750 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:50,750 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] [2025-03-09 02:46:50,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 02:46:50,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:50,951 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_30_to_38_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:50,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1037963109, now seen corresponding path program 1 times [2025-03-09 02:46:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:50,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997373348] [2025-03-09 02:46:50,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:50,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 02:46:50,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 02:46:50,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:50,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239463324] [2025-03-09 02:46:50,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:50,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:50,974 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) [2025-03-09 02:46:50,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 02:46:51,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 02:46:51,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 02:46:51,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:51,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:51,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-03-09 02:46:51,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:51,082 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 [2025-03-09 02:46:51,084 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 [2025-03-09 02:46:51,171 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 17 [2025-03-09 02:46:51,200 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 21 treesize of output 13 [2025-03-09 02:46:51,202 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 [2025-03-09 02:46:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:51,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:46:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997373348] [2025-03-09 02:46:51,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239463324] [2025-03-09 02:46:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239463324] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:46:51,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:46:51,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2025-03-09 02:46:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740293189] [2025-03-09 02:46:51,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:46:51,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 02:46:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:51,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 02:46:51,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-03-09 02:46:51,416 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 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) [2025-03-09 02:46:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:51,854 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2025-03-09 02:46:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 02:46:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 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 34 [2025-03-09 02:46:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:51,855 INFO L225 Difference]: With dead ends: 148 [2025-03-09 02:46:51,856 INFO L226 Difference]: Without dead ends: 147 [2025-03-09 02:46:51,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-09 02:46:51,856 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 205 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:51,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 533 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:46:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-03-09 02:46:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 127. [2025-03-09 02:46:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 114 states have internal predecessors, (124), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2025-03-09 02:46:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2025-03-09 02:46:51,870 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 34 [2025-03-09 02:46:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:51,870 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2025-03-09 02:46:51,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 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) [2025-03-09 02:46:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2025-03-09 02:46:51,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-09 02:46:51,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:51,871 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] [2025-03-09 02:46:51,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 02:46:52,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:52,071 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:52,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash -316417301, now seen corresponding path program 1 times [2025-03-09 02:46:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863583960] [2025-03-09 02:46:52,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:52,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 02:46:52,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 02:46:52,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:52,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:52,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410707744] [2025-03-09 02:46:52,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:52,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:52,087 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) [2025-03-09 02:46:52,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 02:46:52,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 02:46:52,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 02:46:52,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:52,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:52,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-09 02:46:52,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:52,172 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 [2025-03-09 02:46:52,174 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 [2025-03-09 02:46:52,177 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 [2025-03-09 02:46:52,323 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 [2025-03-09 02:46:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:52,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:46:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863583960] [2025-03-09 02:46:52,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410707744] [2025-03-09 02:46:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410707744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:46:52,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:46:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 02:46:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378833436] [2025-03-09 02:46:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:46:52,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 02:46:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:52,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 02:46:52,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:46:52,349 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2025-03-09 02:46:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:52,509 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2025-03-09 02:46:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:46:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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 [2025-03-09 02:46:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:52,510 INFO L225 Difference]: With dead ends: 131 [2025-03-09 02:46:52,510 INFO L226 Difference]: Without dead ends: 116 [2025-03-09 02:46:52,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:46:52,512 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 35 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:52,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 229 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:46:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-09 02:46:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-03-09 02:46:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 104 states have internal predecessors, (113), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-09 02:46:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2025-03-09 02:46:52,524 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 34 [2025-03-09 02:46:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:52,524 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2025-03-09 02:46:52,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2025-03-09 02:46:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2025-03-09 02:46:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-09 02:46:52,525 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:52,525 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:46:52,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 02:46:52,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:52,726 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_30_to_38_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:52,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2112085298, now seen corresponding path program 1 times [2025-03-09 02:46:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:52,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480959377] [2025-03-09 02:46:52,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:52,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 02:46:52,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 02:46:52,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:52,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:52,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547673110] [2025-03-09 02:46:52,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:52,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:52,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:52,755 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) [2025-03-09 02:46:52,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 02:46:52,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 02:46:52,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 02:46:52,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:52,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:52,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-03-09 02:46:52,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:52,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 02:46:52,877 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 [2025-03-09 02:46:53,142 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 17 [2025-03-09 02:46:53,204 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 37 treesize of output 21 [2025-03-09 02:46:53,215 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 [2025-03-09 02:46:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:53,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:46:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:53,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:53,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480959377] [2025-03-09 02:46:53,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:53,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547673110] [2025-03-09 02:46:53,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547673110] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:46:53,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:46:53,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2025-03-09 02:46:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722257202] [2025-03-09 02:46:53,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:46:53,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 02:46:53,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:53,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 02:46:53,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-03-09 02:46:53,972 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 20 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 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) [2025-03-09 02:46:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:54,975 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2025-03-09 02:46:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 02:46:54,975 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 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 35 [2025-03-09 02:46:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:54,976 INFO L225 Difference]: With dead ends: 132 [2025-03-09 02:46:54,976 INFO L226 Difference]: Without dead ends: 130 [2025-03-09 02:46:54,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2025-03-09 02:46:54,977 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 175 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:54,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 508 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-09 02:46:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-09 02:46:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2025-03-09 02:46:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 104 states have internal predecessors, (111), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-09 02:46:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2025-03-09 02:46:54,991 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 35 [2025-03-09 02:46:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:54,991 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2025-03-09 02:46:54,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 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) [2025-03-09 02:46:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2025-03-09 02:46:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-09 02:46:54,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:54,991 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] [2025-03-09 02:46:54,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 02:46:55,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-09 02:46:55,192 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:55,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash 137780567, now seen corresponding path program 1 times [2025-03-09 02:46:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:55,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767794988] [2025-03-09 02:46:55,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:55,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 02:46:55,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 02:46:55,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:55,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315766814] [2025-03-09 02:46:55,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:55,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:55,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:55,210 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) [2025-03-09 02:46:55,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 02:46:55,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 02:46:55,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 02:46:55,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:55,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:55,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-03-09 02:46:55,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:55,305 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 [2025-03-09 02:46:55,311 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 [2025-03-09 02:46:55,513 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 17 [2025-03-09 02:46:55,569 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 37 treesize of output 21 [2025-03-09 02:46:55,617 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 40 treesize of output 20 [2025-03-09 02:46:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:55,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:46:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767794988] [2025-03-09 02:46:56,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315766814] [2025-03-09 02:46:56,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315766814] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:46:56,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:46:56,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2025-03-09 02:46:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50380292] [2025-03-09 02:46:56,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:46:56,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 02:46:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:56,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 02:46:56,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2025-03-09 02:46:56,195 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 20 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 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) [2025-03-09 02:46:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:46:59,213 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2025-03-09 02:46:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 02:46:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 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 38 [2025-03-09 02:46:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:46:59,215 INFO L225 Difference]: With dead ends: 170 [2025-03-09 02:46:59,215 INFO L226 Difference]: Without dead ends: 168 [2025-03-09 02:46:59,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2025-03-09 02:46:59,215 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 206 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 02:46:59,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 745 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 02:46:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-09 02:46:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2025-03-09 02:46:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.3904761904761904) internal successors, (146), 129 states have internal predecessors, (146), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2025-03-09 02:46:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2025-03-09 02:46:59,232 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 38 [2025-03-09 02:46:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:46:59,232 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2025-03-09 02:46:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 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) [2025-03-09 02:46:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2025-03-09 02:46:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-09 02:46:59,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:46:59,233 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] [2025-03-09 02:46:59,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-09 02:46:59,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:59,434 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_30_to_38_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:46:59,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:46:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash -736861259, now seen corresponding path program 1 times [2025-03-09 02:46:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:46:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974754112] [2025-03-09 02:46:59,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:59,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:46:59,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 02:46:59,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 02:46:59,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:59,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:46:59,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215566054] [2025-03-09 02:46:59,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:46:59,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:46:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:46:59,458 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) [2025-03-09 02:46:59,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 02:46:59,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 02:46:59,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 02:46:59,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:46:59,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:46:59,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-09 02:46:59,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:46:59,557 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 [2025-03-09 02:46:59,565 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 [2025-03-09 02:46:59,636 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 17 [2025-03-09 02:46:59,735 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 21 treesize of output 13 [2025-03-09 02:46:59,737 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 [2025-03-09 02:46:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:46:59,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:46:59,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:46:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974754112] [2025-03-09 02:46:59,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:46:59,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215566054] [2025-03-09 02:46:59,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215566054] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:46:59,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:46:59,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-03-09 02:46:59,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26708649] [2025-03-09 02:46:59,901 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-09 02:46:59,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 02:46:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:46:59,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 02:46:59,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:46:59,902 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand has 10 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2025-03-09 02:47:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:47:00,132 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2025-03-09 02:47:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:47:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 40 [2025-03-09 02:47:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:47:00,134 INFO L225 Difference]: With dead ends: 152 [2025-03-09 02:47:00,134 INFO L226 Difference]: Without dead ends: 151 [2025-03-09 02:47:00,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:47:00,134 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 79 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:47:00,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 329 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:47:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-03-09 02:47:00,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 144. [2025-03-09 02:47:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.380952380952381) internal successors, (145), 129 states have internal predecessors, (145), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2025-03-09 02:47:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 166 transitions. [2025-03-09 02:47:00,142 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 166 transitions. Word has length 40 [2025-03-09 02:47:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:47:00,143 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 166 transitions. [2025-03-09 02:47:00,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2025-03-09 02:47:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 166 transitions. [2025-03-09 02:47:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-09 02:47:00,143 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:47:00,143 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] [2025-03-09 02:47:00,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 02:47:00,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:00,343 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:47:00,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:47:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1367862552, now seen corresponding path program 1 times [2025-03-09 02:47:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:47:00,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740381395] [2025-03-09 02:47:00,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:47:00,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 02:47:00,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 02:47:00,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:00,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:47:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806472933] [2025-03-09 02:47:00,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:00,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:00,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:47:00,369 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) [2025-03-09 02:47:00,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 02:47:00,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 02:47:00,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 02:47:00,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:00,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:00,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 101 conjuncts are in the unsatisfiable core [2025-03-09 02:47:00,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:47:00,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-09 02:47:00,514 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 [2025-03-09 02:47:00,519 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 [2025-03-09 02:47:00,524 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 [2025-03-09 02:47:00,527 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 [2025-03-09 02:47:00,820 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 [2025-03-09 02:47:00,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-09 02:47:01,024 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 35 treesize of output 19 [2025-03-09 02:47:01,029 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 [2025-03-09 02:47:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:01,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:47:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:47:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740381395] [2025-03-09 02:47:02,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:47:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806472933] [2025-03-09 02:47:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806472933] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:47:02,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:47:02,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2025-03-09 02:47:02,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901621997] [2025-03-09 02:47:02,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:47:02,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-09 02:47:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:47:02,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-09 02:47:02,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:47:02,147 INFO L87 Difference]: Start difference. First operand 144 states and 166 transitions. Second operand has 22 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 18 states have internal predecessors, (73), 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) [2025-03-09 02:47:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:47:03,812 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2025-03-09 02:47:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 02:47:03,812 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 18 states have internal predecessors, (73), 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 41 [2025-03-09 02:47:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:47:03,813 INFO L225 Difference]: With dead ends: 151 [2025-03-09 02:47:03,813 INFO L226 Difference]: Without dead ends: 150 [2025-03-09 02:47:03,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2025-03-09 02:47:03,813 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 99 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:47:03,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 698 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-09 02:47:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-09 02:47:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2025-03-09 02:47:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 129 states have internal predecessors, (144), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2025-03-09 02:47:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 165 transitions. [2025-03-09 02:47:03,827 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 165 transitions. Word has length 41 [2025-03-09 02:47:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:47:03,828 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 165 transitions. [2025-03-09 02:47:03,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 18 states have internal predecessors, (73), 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) [2025-03-09 02:47:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 165 transitions. [2025-03-09 02:47:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-09 02:47:03,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:47:03,828 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] [2025-03-09 02:47:03,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 02:47:04,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:04,029 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_30_to_38_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:47:04,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:47:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash 545933843, now seen corresponding path program 1 times [2025-03-09 02:47:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:47:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586769722] [2025-03-09 02:47:04,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:47:04,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-09 02:47:04,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 02:47:04,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:04,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:47:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747904445] [2025-03-09 02:47:04,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:04,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:04,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:47:04,044 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) [2025-03-09 02:47:04,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 02:47:04,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-09 02:47:04,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 02:47:04,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:04,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:04,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 89 conjuncts are in the unsatisfiable core [2025-03-09 02:47:04,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:47:04,174 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 [2025-03-09 02:47:04,175 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 [2025-03-09 02:47:04,177 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 [2025-03-09 02:47:04,312 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 17 [2025-03-09 02:47:04,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-09 02:47:04,409 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 28 treesize of output 16 [2025-03-09 02:47:04,444 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 35 treesize of output 19 [2025-03-09 02:47:04,446 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 31 treesize of output 15 [2025-03-09 02:47:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:04,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:47:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:04,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:47:04,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586769722] [2025-03-09 02:47:04,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:47:04,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747904445] [2025-03-09 02:47:04,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747904445] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:47:04,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:47:04,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2025-03-09 02:47:04,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15614204] [2025-03-09 02:47:04,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:47:04,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 02:47:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:47:04,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 02:47:04,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2025-03-09 02:47:04,942 INFO L87 Difference]: Start difference. First operand 144 states and 165 transitions. Second operand has 23 states, 20 states have (on average 3.75) internal successors, (75), 19 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) [2025-03-09 02:47:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:47:07,075 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2025-03-09 02:47:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 02:47:07,075 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.75) internal successors, (75), 19 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 [2025-03-09 02:47:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:47:07,076 INFO L225 Difference]: With dead ends: 163 [2025-03-09 02:47:07,076 INFO L226 Difference]: Without dead ends: 161 [2025-03-09 02:47:07,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=1094, Unknown=0, NotChecked=0, Total=1332 [2025-03-09 02:47:07,076 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 200 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 02:47:07,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 565 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 02:47:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-03-09 02:47:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2025-03-09 02:47:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.3428571428571427) internal successors, (141), 129 states have internal predecessors, (141), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2025-03-09 02:47:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 162 transitions. [2025-03-09 02:47:07,085 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 162 transitions. Word has length 42 [2025-03-09 02:47:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:47:07,085 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 162 transitions. [2025-03-09 02:47:07,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.75) internal successors, (75), 19 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) [2025-03-09 02:47:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 162 transitions. [2025-03-09 02:47:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-09 02:47:07,086 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:47:07,086 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] [2025-03-09 02:47:07,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 02:47:07,286 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,SelfDestructingSolverStorable25 [2025-03-09 02:47:07,287 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_30_to_38_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:47:07,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:47:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1552165662, now seen corresponding path program 1 times [2025-03-09 02:47:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:47:07,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173169514] [2025-03-09 02:47:07,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:47:07,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-09 02:47:07,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-09 02:47:07,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:07,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:47:07,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:47:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173169514] [2025-03-09 02:47:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173169514] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:47:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38414167] [2025-03-09 02:47:07,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:07,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:47:07,582 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) [2025-03-09 02:47:07,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 02:47:07,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-09 02:47:07,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-09 02:47:07,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:07,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:07,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-09 02:47:07,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:47:07,694 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 [2025-03-09 02:47:07,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-09 02:47:07,801 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 [2025-03-09 02:47:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:07,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:47:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:47:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38414167] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 02:47:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:47:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 20 [2025-03-09 02:47:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415737183] [2025-03-09 02:47:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:47:07,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:47:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:47:07,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:47:07,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-03-09 02:47:07,919 INFO L87 Difference]: Start difference. First operand 144 states and 162 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:47:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:47:08,056 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2025-03-09 02:47:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 02:47:08,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (4), 3 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 51 [2025-03-09 02:47:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:47:08,057 INFO L225 Difference]: With dead ends: 146 [2025-03-09 02:47:08,057 INFO L226 Difference]: Without dead ends: 145 [2025-03-09 02:47:08,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2025-03-09 02:47:08,057 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 89 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:47:08,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 332 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:47:08,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-03-09 02:47:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-03-09 02:47:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 106 states have (on average 1.320754716981132) internal successors, (140), 129 states have internal predecessors, (140), 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) [2025-03-09 02:47:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2025-03-09 02:47:08,067 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 51 [2025-03-09 02:47:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:47:08,067 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2025-03-09 02:47:08,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:47:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2025-03-09 02:47:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 02:47:08,067 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:47:08,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:47:08,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-09 02:47:08,268 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,SelfDestructingSolverStorable26 [2025-03-09 02:47:08,268 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:47:08,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:47:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 872495249, now seen corresponding path program 1 times [2025-03-09 02:47:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:47:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517454936] [2025-03-09 02:47:08,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:47:08,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 02:47:08,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 02:47:08,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:08,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:47:08,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:47:08,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517454936] [2025-03-09 02:47:08,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517454936] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:47:08,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275188584] [2025-03-09 02:47:08,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:08,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:08,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:47:08,509 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) [2025-03-09 02:47:08,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 02:47:08,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 02:47:08,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 02:47:08,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:08,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:08,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-09 02:47:08,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:47:08,616 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 [2025-03-09 02:47:08,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-09 02:47:08,727 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 [2025-03-09 02:47:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:08,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:47:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:47:08,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275188584] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:47:08,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:47:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 20 [2025-03-09 02:47:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255866971] [2025-03-09 02:47:08,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:47:08,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 02:47:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:47:08,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 02:47:08,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-03-09 02:47:08,865 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 17 states have internal predecessors, (94), 6 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:47:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:47:09,107 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2025-03-09 02:47:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 02:47:09,108 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 17 states have internal predecessors, (94), 6 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 52 [2025-03-09 02:47:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:47:09,109 INFO L225 Difference]: With dead ends: 221 [2025-03-09 02:47:09,109 INFO L226 Difference]: Without dead ends: 220 [2025-03-09 02:47:09,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2025-03-09 02:47:09,109 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 264 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:47:09,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 687 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:47:09,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-09 02:47:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 179. [2025-03-09 02:47:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 159 states have internal predecessors, (180), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2025-03-09 02:47:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 209 transitions. [2025-03-09 02:47:09,120 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 209 transitions. Word has length 52 [2025-03-09 02:47:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:47:09,120 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 209 transitions. [2025-03-09 02:47:09,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 17 states have internal predecessors, (94), 6 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:47:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 209 transitions. [2025-03-09 02:47:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-09 02:47:09,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:47:09,121 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] [2025-03-09 02:47:09,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-09 02:47:09,325 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,SelfDestructingSolverStorable27 [2025-03-09 02:47:09,325 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-09 02:47:09,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:47:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 933953025, now seen corresponding path program 1 times [2025-03-09 02:47:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:47:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201553011] [2025-03-09 02:47:09,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:47:09,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-09 02:47:09,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-09 02:47:09,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:09,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:47:09,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300304580] [2025-03-09 02:47:09,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:47:09,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:47:09,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:47:09,342 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) [2025-03-09 02:47:09,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 02:47:09,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-09 02:47:09,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-09 02:47:09,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:47:09,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:47:09,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-09 02:47:09,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:47:09,470 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 [2025-03-09 02:47:09,587 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 [2025-03-09 02:47:13,712 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_3| Int) (|v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_3| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_3| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_3| Int)) (<= 0 (+ 9223372036854775808 (* (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_3|) |v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_3|) (select (select |c_#memory_int#3| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_3|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_3|))))) is different from true [2025-03-09 02:47:13,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-09 02:47:13,783 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 19 treesize of output 11 [2025-03-09 02:47:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:47:13,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:47:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:47:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201553011] [2025-03-09 02:47:14,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:47:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300304580] [2025-03-09 02:47:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300304580] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:47:14,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:47:14,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-03-09 02:47:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233646287] [2025-03-09 02:47:14,160 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-09 02:47:14,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 02:47:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:47:14,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 02:47:14,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=100, Unknown=1, NotChecked=20, Total=156 [2025-03-09 02:47:14,160 INFO L87 Difference]: Start difference. First operand 179 states and 209 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)