./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 4a9aad6636e75eb788a44e63e1649ee5df89ecae877c31a886978a8e3fdd2e8f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:03:19,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:03:19,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:03:19,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:03:19,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:03:19,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:03:19,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:03:19,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:03:19,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:03:19,364 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:03:19,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:03:19,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:03:19,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:03:19,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:03:19,366 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:03:19,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:03:19,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:03:19,366 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:03:19,367 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:03:19,367 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:03:19,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:03:19,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:03:19,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:03:19,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:19,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:03:19,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:03:19,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:03:19,369 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-jdk21/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 -> 4a9aad6636e75eb788a44e63e1649ee5df89ecae877c31a886978a8e3fdd2e8f [2025-02-08 10:03:19,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:03:19,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:03:19,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:03:19,611 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:03:19,612 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:03:19,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c [2025-02-08 10:03:20,972 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa9105681/6faff63f86044b3b9b07075c079b3ba2/FLAG91241d431 [2025-02-08 10:03:21,187 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:03:21,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c [2025-02-08 10:03:21,209 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa9105681/6faff63f86044b3b9b07075c079b3ba2/FLAG91241d431 [2025-02-08 10:03:21,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa9105681/6faff63f86044b3b9b07075c079b3ba2 [2025-02-08 10:03:21,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:03:21,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:03:21,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:03:21,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:03:21,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:03:21,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7b9a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21, skipping insertion in model container [2025-02-08 10:03:21,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:03:21,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:03:21,426 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:03:21,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:03:21,484 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:03:21,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21 WrapperNode [2025-02-08 10:03:21,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:03:21,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:03:21,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:03:21,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:03:21,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,532 INFO L138 Inliner]: procedures = 17, calls = 172, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 185 [2025-02-08 10:03:21,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:03:21,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:03:21,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:03:21,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:03:21,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,595 INFO L175 MemorySlicer]: Split 138 memory accesses to 6 slices as follows [2, 30, 35, 22, 20, 29]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 2, 3, 2, 1, 3]. [2025-02-08 10:03:21,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:03:21,640 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:03:21,644 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:03:21,645 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:03:21,645 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (1/1) ... [2025-02-08 10:03:21,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:21,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:03:21,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_32_0 [2025-02-08 10:03:21,706 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_32_0 [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 10:03:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:03:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 10:03:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 10:03:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 10:03:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 10:03:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 10:03:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_36_to_52_0 [2025-02-08 10:03:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_36_to_52_0 [2025-02-08 10:03:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 10:03:21,846 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:03:21,855 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:03:23,097 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: call ULTIMATE.dealloc(main_~#n~0#1.base, main_~#n~0#1.offset);havoc main_~#n~0#1.base, main_~#n~0#1.offset;call ULTIMATE.dealloc(main_~#p~0#1.base, main_~#p~0#1.offset);havoc main_~#p~0#1.base, main_~#p~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#h~0#1.base, main_~#h~0#1.offset);havoc main_~#h~0#1.base, main_~#h~0#1.offset; [2025-02-08 10:03:23,143 INFO L? ?]: Removed 1169 outVars from TransFormulas that were not future-live. [2025-02-08 10:03:23,143 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:03:23,166 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:03:23,170 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:03:23,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:03:23 BoogieIcfgContainer [2025-02-08 10:03:23,170 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:03:23,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:03:23,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:03:23,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:03:23,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:03:21" (1/3) ... [2025-02-08 10:03:23,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ea30e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:03:23, skipping insertion in model container [2025-02-08 10:03:23,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:21" (2/3) ... [2025-02-08 10:03:23,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ea30e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:03:23, skipping insertion in model container [2025-02-08 10:03:23,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:03:23" (3/3) ... [2025-02-08 10:03:23,181 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_dijkstra.c [2025-02-08 10:03:23,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:03:23,193 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_dijkstra.c that has 4 procedures, 558 locations, 1 initial locations, 0 loop locations, and 258 error locations. [2025-02-08 10:03:23,251 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:03:23,259 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;@5342a968, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:03:23,259 INFO L334 AbstractCegarLoop]: Starting to check reachability of 258 error locations. [2025-02-08 10:03:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 558 states, 283 states have (on average 1.9328621908127208) internal successors, (547), 543 states have internal predecessors, (547), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 10:03:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 10:03:23,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:23,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 10:03:23,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:23,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 297332729, now seen corresponding path program 1 times [2025-02-08 10:03:23,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:23,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656264564] [2025-02-08 10:03:23,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:23,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:23,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 10:03:23,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 10:03:23,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:23,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656264564] [2025-02-08 10:03:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656264564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:23,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:23,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268770520] [2025-02-08 10:03:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:23,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:03:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:23,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:03:23,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:03:23,661 INFO L87 Difference]: Start difference. First operand has 558 states, 283 states have (on average 1.9328621908127208) internal successors, (547), 543 states have internal predecessors, (547), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 7 states, 5 states have (on average 1.0) 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) [2025-02-08 10:03:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:23,861 INFO L93 Difference]: Finished difference Result 1116 states and 1159 transitions. [2025-02-08 10:03:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:03:23,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) 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 [2025-02-08 10:03:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:23,869 INFO L225 Difference]: With dead ends: 1116 [2025-02-08 10:03:23,869 INFO L226 Difference]: Without dead ends: 562 [2025-02-08 10:03:23,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:03:23,875 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 13 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:23,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3245 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:03:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-02-08 10:03:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 559. [2025-02-08 10:03:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 285 states have (on average 1.9157894736842105) internal successors, (546), 544 states have internal predecessors, (546), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2025-02-08 10:03:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 571 transitions. [2025-02-08 10:03:23,919 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 571 transitions. Word has length 6 [2025-02-08 10:03:23,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:23,919 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 571 transitions. [2025-02-08 10:03:23,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) 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) [2025-02-08 10:03:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 571 transitions. [2025-02-08 10:03:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 10:03:23,920 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:23,920 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:23,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 10:03:23,920 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:23,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash 627380373, now seen corresponding path program 1 times [2025-02-08 10:03:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:23,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848937539] [2025-02-08 10:03:23,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:23,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:03:23,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:03:23,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:23,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848937539] [2025-02-08 10:03:24,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848937539] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:24,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:24,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890367515] [2025-02-08 10:03:24,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:24,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:03:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:24,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:03:24,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:03:24,082 INFO L87 Difference]: Start difference. First operand 559 states and 571 transitions. Second operand has 7 states, 5 states have (on average 1.2) 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) [2025-02-08 10:03:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:24,244 INFO L93 Difference]: Finished difference Result 562 states and 575 transitions. [2025-02-08 10:03:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:03:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) 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 [2025-02-08 10:03:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:24,246 INFO L225 Difference]: With dead ends: 562 [2025-02-08 10:03:24,246 INFO L226 Difference]: Without dead ends: 561 [2025-02-08 10:03:24,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:03:24,247 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 10 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:24,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3214 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:03:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-02-08 10:03:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 560. [2025-02-08 10:03:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 286 states have (on average 1.9125874125874125) internal successors, (547), 545 states have internal predecessors, (547), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2025-02-08 10:03:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 572 transitions. [2025-02-08 10:03:24,278 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 572 transitions. Word has length 7 [2025-02-08 10:03:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:24,278 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 572 transitions. [2025-02-08 10:03:24,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) 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) [2025-02-08 10:03:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 572 transitions. [2025-02-08 10:03:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 10:03:24,278 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:24,279 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:24,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 10:03:24,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_36_to_52_0Err185ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:24,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2048986296, now seen corresponding path program 1 times [2025-02-08 10:03:24,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:24,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728477244] [2025-02-08 10:03:24,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:24,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 10:03:24,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 10:03:24,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:24,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:24,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:24,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728477244] [2025-02-08 10:03:24,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728477244] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:24,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:24,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:24,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290416705] [2025-02-08 10:03:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:24,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:03:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:24,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:03:24,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:03:24,463 INFO L87 Difference]: Start difference. First operand 560 states and 572 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 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) [2025-02-08 10:03:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:24,695 INFO L93 Difference]: Finished difference Result 1082 states and 1103 transitions. [2025-02-08 10:03:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:03:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 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 11 [2025-02-08 10:03:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:24,699 INFO L225 Difference]: With dead ends: 1082 [2025-02-08 10:03:24,700 INFO L226 Difference]: Without dead ends: 1080 [2025-02-08 10:03:24,701 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 [2025-02-08 10:03:24,703 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 885 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:24,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 2622 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2025-02-08 10:03:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 753. [2025-02-08 10:03:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 472 states have (on average 1.923728813559322) internal successors, (908), 731 states have internal predecessors, (908), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2025-02-08 10:03:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 946 transitions. [2025-02-08 10:03:24,731 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 946 transitions. Word has length 11 [2025-02-08 10:03:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:24,731 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 946 transitions. [2025-02-08 10:03:24,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 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) [2025-02-08 10:03:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 946 transitions. [2025-02-08 10:03:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 10:03:24,732 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:24,732 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:24,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 10:03:24,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:24,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash -595715638, now seen corresponding path program 1 times [2025-02-08 10:03:24,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:24,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71435738] [2025-02-08 10:03:24,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:24,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:24,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 10:03:24,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 10:03:24,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:24,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:25,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:25,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71435738] [2025-02-08 10:03:25,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71435738] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110684556] [2025-02-08 10:03:25,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:25,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:25,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:25,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:25,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 10:03:25,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 10:03:25,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 10:03:25,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:25,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:25,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 10:03:25,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:25,147 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 [2025-02-08 10:03:25,204 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 [2025-02-08 10:03:25,215 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 15 treesize of output 7 [2025-02-08 10:03:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:25,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110684556] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:03:25,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:03:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2025-02-08 10:03:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743395959] [2025-02-08 10:03:25,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:25,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 10:03:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:25,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 10:03:25,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:03:25,316 INFO L87 Difference]: Start difference. First operand 753 states and 946 transitions. Second operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:03:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:25,571 INFO L93 Difference]: Finished difference Result 759 states and 958 transitions. [2025-02-08 10:03:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 10:03:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 10:03:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:25,574 INFO L225 Difference]: With dead ends: 759 [2025-02-08 10:03:25,574 INFO L226 Difference]: Without dead ends: 758 [2025-02-08 10:03:25,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2025-02-08 10:03:25,575 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 43 mSDsluCounter, 4242 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:25,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 4799 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2025-02-08 10:03:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2025-02-08 10:03:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 473 states have (on average 1.919661733615222) internal successors, (908), 731 states have internal predecessors, (908), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2025-02-08 10:03:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 947 transitions. [2025-02-08 10:03:25,591 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 947 transitions. Word has length 12 [2025-02-08 10:03:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:25,591 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 947 transitions. [2025-02-08 10:03:25,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:03:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 947 transitions. [2025-02-08 10:03:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 10:03:25,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:25,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:25,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:25,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:25,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_36_to_52_0Err183ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:25,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797466, now seen corresponding path program 1 times [2025-02-08 10:03:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485799722] [2025-02-08 10:03:25,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:25,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 10:03:25,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 10:03:25,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:25,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:25,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:25,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485799722] [2025-02-08 10:03:25,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485799722] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:25,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:25,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:03:25,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345614548] [2025-02-08 10:03:25,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:25,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:03:25,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:25,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:03:25,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:25,920 INFO L87 Difference]: Start difference. First operand 754 states and 947 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 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) [2025-02-08 10:03:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:26,309 INFO L93 Difference]: Finished difference Result 1273 states and 1475 transitions. [2025-02-08 10:03:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:03:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 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 13 [2025-02-08 10:03:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:26,313 INFO L225 Difference]: With dead ends: 1273 [2025-02-08 10:03:26,314 INFO L226 Difference]: Without dead ends: 1272 [2025-02-08 10:03:26,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:03:26,314 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 1605 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:26,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 3022 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:03:26,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2025-02-08 10:03:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 950. [2025-02-08 10:03:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 660 states have (on average 1.9227272727272726) internal successors, (1269), 918 states have internal predecessors, (1269), 25 states have call successors, (25), 6 states have call predecessors, (25), 8 states have return successors, (30), 25 states have call predecessors, (30), 25 states have call successors, (30) [2025-02-08 10:03:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1324 transitions. [2025-02-08 10:03:26,343 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1324 transitions. Word has length 13 [2025-02-08 10:03:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:26,344 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1324 transitions. [2025-02-08 10:03:26,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 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) [2025-02-08 10:03:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1324 transitions. [2025-02-08 10:03:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 10:03:26,344 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:26,344 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 10:03:26,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 10:03:26,345 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:26,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:26,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1287315228, now seen corresponding path program 1 times [2025-02-08 10:03:26,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:26,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464403931] [2025-02-08 10:03:26,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:26,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:26,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 10:03:26,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 10:03:26,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:26,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464403931] [2025-02-08 10:03:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464403931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148397049] [2025-02-08 10:03:26,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:26,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:26,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:26,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 10:03:26,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 10:03:26,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 10:03:26,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:26,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:26,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 10:03:26,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:26,688 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 [2025-02-08 10:03:26,717 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 [2025-02-08 10:03:26,724 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 [2025-02-08 10:03:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:26,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:26,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148397049] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:03:26,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:03:26,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2025-02-08 10:03:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315266498] [2025-02-08 10:03:26,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:26,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 10:03:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:26,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 10:03:26,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:03:26,799 INFO L87 Difference]: Start difference. First operand 950 states and 1324 transitions. Second operand has 19 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:03:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:27,111 INFO L93 Difference]: Finished difference Result 981 states and 1363 transitions. [2025-02-08 10:03:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 10:03:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 10:03:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:27,114 INFO L225 Difference]: With dead ends: 981 [2025-02-08 10:03:27,114 INFO L226 Difference]: Without dead ends: 980 [2025-02-08 10:03:27,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2025-02-08 10:03:27,115 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 55 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 6402 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:27,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 6402 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2025-02-08 10:03:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2025-02-08 10:03:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 681 states have (on average 1.8986784140969164) internal successors, (1293), 942 states have internal predecessors, (1293), 28 states have call successors, (28), 9 states have call predecessors, (28), 14 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2025-02-08 10:03:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1360 transitions. [2025-02-08 10:03:27,157 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1360 transitions. Word has length 13 [2025-02-08 10:03:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:27,157 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1360 transitions. [2025-02-08 10:03:27,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:03:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1360 transitions. [2025-02-08 10:03:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 10:03:27,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:27,157 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:27,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 10:03:27,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:27,358 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_36_to_52_0Err182ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:27,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1275178949, now seen corresponding path program 1 times [2025-02-08 10:03:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:27,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178780420] [2025-02-08 10:03:27,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:27,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:27,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 10:03:27,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 10:03:27,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:27,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:27,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178780420] [2025-02-08 10:03:27,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178780420] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:27,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:03:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482104677] [2025-02-08 10:03:27,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:27,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:03:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:27,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:03:27,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:27,505 INFO L87 Difference]: Start difference. First operand 980 states and 1360 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 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) [2025-02-08 10:03:27,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:27,934 INFO L93 Difference]: Finished difference Result 1298 states and 1507 transitions. [2025-02-08 10:03:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:03:27,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 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 14 [2025-02-08 10:03:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:27,939 INFO L225 Difference]: With dead ends: 1298 [2025-02-08 10:03:27,939 INFO L226 Difference]: Without dead ends: 1297 [2025-02-08 10:03:27,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:03:27,940 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 1599 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:27,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 3061 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:03:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2025-02-08 10:03:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 980. [2025-02-08 10:03:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 681 states have (on average 1.8972099853157123) internal successors, (1292), 942 states have internal predecessors, (1292), 28 states have call successors, (28), 9 states have call predecessors, (28), 14 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2025-02-08 10:03:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1359 transitions. [2025-02-08 10:03:27,963 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1359 transitions. Word has length 14 [2025-02-08 10:03:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:27,963 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1359 transitions. [2025-02-08 10:03:27,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 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) [2025-02-08 10:03:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1359 transitions. [2025-02-08 10:03:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:03:27,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:27,964 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] [2025-02-08 10:03:27,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 10:03:27,964 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_36_to_52_0Err181ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:27,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1416489708, now seen corresponding path program 1 times [2025-02-08 10:03:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080682477] [2025-02-08 10:03:27,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:27,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:27,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:27,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:27,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407464784] [2025-02-08 10:03:27,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:27,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:27,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 10:03:28,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:28,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:28,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:28,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:28,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 10:03:28,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:28,064 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 [2025-02-08 10:03:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:28,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080682477] [2025-02-08 10:03:28,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:28,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407464784] [2025-02-08 10:03:28,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407464784] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:28,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:28,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:28,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044264039] [2025-02-08 10:03:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:28,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:03:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:28,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:03:28,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:03:28,142 INFO L87 Difference]: Start difference. First operand 980 states and 1359 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:28,361 INFO L93 Difference]: Finished difference Result 1315 states and 1520 transitions. [2025-02-08 10:03:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:03:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2025-02-08 10:03:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:28,365 INFO L225 Difference]: With dead ends: 1315 [2025-02-08 10:03:28,365 INFO L226 Difference]: Without dead ends: 1313 [2025-02-08 10:03:28,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:03:28,366 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 1263 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:28,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 2368 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2025-02-08 10:03:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1028. [2025-02-08 10:03:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 726 states have (on average 1.8911845730027548) internal successors, (1373), 987 states have internal predecessors, (1373), 30 states have call successors, (30), 10 states have call predecessors, (30), 15 states have return successors, (41), 30 states have call predecessors, (41), 30 states have call successors, (41) [2025-02-08 10:03:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1444 transitions. [2025-02-08 10:03:28,390 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1444 transitions. Word has length 21 [2025-02-08 10:03:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:28,390 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1444 transitions. [2025-02-08 10:03:28,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1444 transitions. [2025-02-08 10:03:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:03:28,391 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:28,391 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:28,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:28,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:28,596 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_36_to_52_0Err183ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:28,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2135932867, now seen corresponding path program 1 times [2025-02-08 10:03:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175426527] [2025-02-08 10:03:28,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:28,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:28,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:28,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:28,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:28,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:28,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175426527] [2025-02-08 10:03:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175426527] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355061689] [2025-02-08 10:03:28,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:28,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:28,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 10:03:28,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:28,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:28,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:28,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:28,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 10:03:29,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:29,004 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 [2025-02-08 10:03:29,086 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 [2025-02-08 10:03:29,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:29,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:29,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-08 10:03:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355061689] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:03:29,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:03:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 24 [2025-02-08 10:03:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260963543] [2025-02-08 10:03:29,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:29,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 10:03:29,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:29,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 10:03:29,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2025-02-08 10:03:29,485 INFO L87 Difference]: Start difference. First operand 1028 states and 1444 transitions. Second operand has 26 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:03:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:31,011 INFO L93 Difference]: Finished difference Result 1968 states and 2187 transitions. [2025-02-08 10:03:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 10:03:31,011 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2025-02-08 10:03:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:31,019 INFO L225 Difference]: With dead ends: 1968 [2025-02-08 10:03:31,020 INFO L226 Difference]: Without dead ends: 1967 [2025-02-08 10:03:31,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2025-02-08 10:03:31,022 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 2894 mSDsluCounter, 15620 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 16613 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:31,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2905 Valid, 16613 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 10:03:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2025-02-08 10:03:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1030. [2025-02-08 10:03:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 727 states have (on average 1.888583218707015) internal successors, (1373), 988 states have internal predecessors, (1373), 30 states have call successors, (30), 10 states have call predecessors, (30), 16 states have return successors, (43), 31 states have call predecessors, (43), 30 states have call successors, (43) [2025-02-08 10:03:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1446 transitions. [2025-02-08 10:03:31,054 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1446 transitions. Word has length 21 [2025-02-08 10:03:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:31,054 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1446 transitions. [2025-02-08 10:03:31,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:03:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1446 transitions. [2025-02-08 10:03:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 10:03:31,056 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:31,056 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:31,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:31,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-08 10:03:31,260 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_36_to_52_0Err182ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:31,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:31,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1789409790, now seen corresponding path program 1 times [2025-02-08 10:03:31,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:31,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089154405] [2025-02-08 10:03:31,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:31,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:31,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:03:31,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:03:31,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:31,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:31,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:31,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089154405] [2025-02-08 10:03:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089154405] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:31,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736016720] [2025-02-08 10:03:31,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:31,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:31,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:31,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:31,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 10:03:31,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:03:31,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:03:31,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:31,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:31,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-08 10:03:31,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:31,716 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 [2025-02-08 10:03:31,721 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 [2025-02-08 10:03:31,901 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 [2025-02-08 10:03:31,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:03:31,991 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 [2025-02-08 10:03:32,025 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 [2025-02-08 10:03:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:32,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736016720] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:32,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:03:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2025-02-08 10:03:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160178091] [2025-02-08 10:03:32,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:32,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 10:03:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:32,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 10:03:32,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2025-02-08 10:03:32,300 INFO L87 Difference]: Start difference. First operand 1030 states and 1446 transitions. Second operand has 24 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-08 10:03:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:33,549 INFO L93 Difference]: Finished difference Result 1685 states and 2112 transitions. [2025-02-08 10:03:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 10:03:33,549 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2025-02-08 10:03:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:33,553 INFO L225 Difference]: With dead ends: 1685 [2025-02-08 10:03:33,553 INFO L226 Difference]: Without dead ends: 1684 [2025-02-08 10:03:33,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1480, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 10:03:33,554 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 2394 mSDsluCounter, 6949 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 7440 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:33,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 7440 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 10:03:33,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2025-02-08 10:03:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1076. [2025-02-08 10:03:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 771 states have (on average 1.8897535667963683) internal successors, (1457), 1032 states have internal predecessors, (1457), 32 states have call successors, (32), 11 states have call predecessors, (32), 16 states have return successors, (44), 33 states have call predecessors, (44), 32 states have call successors, (44) [2025-02-08 10:03:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1533 transitions. [2025-02-08 10:03:33,575 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1533 transitions. Word has length 22 [2025-02-08 10:03:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:33,575 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1533 transitions. [2025-02-08 10:03:33,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-08 10:03:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1533 transitions. [2025-02-08 10:03:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 10:03:33,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:33,576 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] [2025-02-08 10:03:33,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:33,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 10:03:33,777 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_36_to_52_0Err179ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:33,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 258034546, now seen corresponding path program 1 times [2025-02-08 10:03:33,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:33,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505676265] [2025-02-08 10:03:33,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:33,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:33,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:03:33,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:03:33,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:33,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557718661] [2025-02-08 10:03:33,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:33,793 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:33,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 10:03:33,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:03:33,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:03:33,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:33,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:33,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-08 10:03:33,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:33,872 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 [2025-02-08 10:03:33,880 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 [2025-02-08 10:03:33,987 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 [2025-02-08 10:03:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:33,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505676265] [2025-02-08 10:03:33,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557718661] [2025-02-08 10:03:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557718661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:33,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:03:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239649357] [2025-02-08 10:03:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:33,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:03:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:33,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:03:33,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:33,998 INFO L87 Difference]: Start difference. First operand 1076 states and 1533 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:34,440 INFO L93 Difference]: Finished difference Result 1595 states and 2060 transitions. [2025-02-08 10:03:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:03:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-08 10:03:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:34,446 INFO L225 Difference]: With dead ends: 1595 [2025-02-08 10:03:34,446 INFO L226 Difference]: Without dead ends: 1594 [2025-02-08 10:03:34,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:03:34,449 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 1360 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:34,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 3307 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:03:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2025-02-08 10:03:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1320. [2025-02-08 10:03:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1003 states have (on average 1.893320039880359) internal successors, (1899), 1264 states have internal predecessors, (1899), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2025-02-08 10:03:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1995 transitions. [2025-02-08 10:03:34,483 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1995 transitions. Word has length 23 [2025-02-08 10:03:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:34,484 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1995 transitions. [2025-02-08 10:03:34,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1995 transitions. [2025-02-08 10:03:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-08 10:03:34,486 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:34,486 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] [2025-02-08 10:03:34,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 10:03:34,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 10:03:34,687 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_36_to_52_0Err178ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:34,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash -590863323, now seen corresponding path program 1 times [2025-02-08 10:03:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:34,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357144782] [2025-02-08 10:03:34,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:34,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:34,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 10:03:34,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 10:03:34,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:34,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193924426] [2025-02-08 10:03:34,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:34,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:34,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:34,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 10:03:34,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 10:03:34,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 10:03:34,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:34,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:34,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-02-08 10:03:34,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:34,832 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 [2025-02-08 10:03:34,835 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 [2025-02-08 10:03:34,836 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 [2025-02-08 10:03:34,890 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 [2025-02-08 10:03:35,021 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 [2025-02-08 10:03:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:35,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:35,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:35,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357144782] [2025-02-08 10:03:35,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:35,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193924426] [2025-02-08 10:03:35,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193924426] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:35,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:35,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 10:03:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638851084] [2025-02-08 10:03:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:35,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:03:35,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:35,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:03:35,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:03:35,036 INFO L87 Difference]: Start difference. First operand 1320 states and 1995 transitions. Second operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:36,042 INFO L93 Difference]: Finished difference Result 1594 states and 2059 transitions. [2025-02-08 10:03:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:03:36,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-02-08 10:03:36,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:36,046 INFO L225 Difference]: With dead ends: 1594 [2025-02-08 10:03:36,046 INFO L226 Difference]: Without dead ends: 1593 [2025-02-08 10:03:36,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2025-02-08 10:03:36,049 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 1721 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:36,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 4855 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 10:03:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2025-02-08 10:03:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1320. [2025-02-08 10:03:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1003 states have (on average 1.8923230309072783) internal successors, (1898), 1264 states have internal predecessors, (1898), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2025-02-08 10:03:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1994 transitions. [2025-02-08 10:03:36,121 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1994 transitions. Word has length 24 [2025-02-08 10:03:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:36,121 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1994 transitions. [2025-02-08 10:03:36,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1994 transitions. [2025-02-08 10:03:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-08 10:03:36,126 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:36,126 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] [2025-02-08 10:03:36,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:36,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:36,327 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_36_to_52_0Err177ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:36,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1136893488, now seen corresponding path program 1 times [2025-02-08 10:03:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:36,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176293067] [2025-02-08 10:03:36,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:36,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 10:03:36,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 10:03:36,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:36,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:36,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975392799] [2025-02-08 10:03:36,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:36,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:36,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:36,364 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:36,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 10:03:36,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 10:03:36,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 10:03:36,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:36,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:36,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-02-08 10:03:36,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:36,455 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 [2025-02-08 10:03:36,472 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 [2025-02-08 10:03:36,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:36,801 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 17 treesize of output 9 [2025-02-08 10:03:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:36,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:36,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176293067] [2025-02-08 10:03:36,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975392799] [2025-02-08 10:03:36,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975392799] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:36,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:36,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:03:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977883288] [2025-02-08 10:03:36,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:36,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:03:36,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:36,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:03:36,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:03:36,822 INFO L87 Difference]: Start difference. First operand 1320 states and 1994 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:37,488 INFO L93 Difference]: Finished difference Result 1593 states and 2058 transitions. [2025-02-08 10:03:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:03:37,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2025-02-08 10:03:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:37,496 INFO L225 Difference]: With dead ends: 1593 [2025-02-08 10:03:37,496 INFO L226 Difference]: Without dead ends: 1592 [2025-02-08 10:03:37,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-02-08 10:03:37,496 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 1233 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:37,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 3793 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 10:03:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2025-02-08 10:03:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1320. [2025-02-08 10:03:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1003 states have (on average 1.8913260219341974) internal successors, (1897), 1264 states have internal predecessors, (1897), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2025-02-08 10:03:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1993 transitions. [2025-02-08 10:03:37,524 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1993 transitions. Word has length 25 [2025-02-08 10:03:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:37,525 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1993 transitions. [2025-02-08 10:03:37,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1993 transitions. [2025-02-08 10:03:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-08 10:03:37,526 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:37,526 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] [2025-02-08 10:03:37,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 10:03:37,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:37,726 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_36_to_52_0Err176ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:37,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash -883959421, now seen corresponding path program 1 times [2025-02-08 10:03:37,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:37,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623484460] [2025-02-08 10:03:37,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:37,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:03:37,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:03:37,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:37,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:37,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972393296] [2025-02-08 10:03:37,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:37,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:37,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:37,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:37,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 10:03:37,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:03:37,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:03:37,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:37,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:37,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 10:03:37,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:37,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:37,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623484460] [2025-02-08 10:03:37,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972393296] [2025-02-08 10:03:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972393296] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:37,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:37,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:03:37,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709581486] [2025-02-08 10:03:37,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:38,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:03:38,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:38,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:03:38,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:38,000 INFO L87 Difference]: Start difference. First operand 1320 states and 1993 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:38,340 INFO L93 Difference]: Finished difference Result 1604 states and 2065 transitions. [2025-02-08 10:03:38,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:03:38,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2025-02-08 10:03:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:38,345 INFO L225 Difference]: With dead ends: 1604 [2025-02-08 10:03:38,345 INFO L226 Difference]: Without dead ends: 1603 [2025-02-08 10:03:38,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:03:38,346 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 1392 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:38,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2738 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:03:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2025-02-08 10:03:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1320. [2025-02-08 10:03:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1003 states have (on average 1.888334995014955) internal successors, (1894), 1264 states have internal predecessors, (1894), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2025-02-08 10:03:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1990 transitions. [2025-02-08 10:03:38,376 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1990 transitions. Word has length 26 [2025-02-08 10:03:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:38,376 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1990 transitions. [2025-02-08 10:03:38,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1990 transitions. [2025-02-08 10:03:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-08 10:03:38,377 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:38,377 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] [2025-02-08 10:03:38,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 10:03:38,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:38,579 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_36_to_52_0Err175ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:38,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1632937938, now seen corresponding path program 1 times [2025-02-08 10:03:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84160975] [2025-02-08 10:03:38,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:38,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 10:03:38,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 10:03:38,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:38,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070213187] [2025-02-08 10:03:38,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:38,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:38,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:38,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 10:03:38,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 10:03:38,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 10:03:38,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:38,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:38,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-02-08 10:03:38,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:38,711 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 [2025-02-08 10:03:38,715 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 [2025-02-08 10:03:38,722 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 11 [2025-02-08 10:03:38,736 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 [2025-02-08 10:03:38,877 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 [2025-02-08 10:03:38,883 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 [2025-02-08 10:03:39,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:03:39,096 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 33 treesize of output 29 [2025-02-08 10:03:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:39,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:39,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:39,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84160975] [2025-02-08 10:03:39,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:39,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070213187] [2025-02-08 10:03:39,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070213187] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:39,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:39,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 10:03:39,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404312936] [2025-02-08 10:03:39,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:39,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:03:39,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:39,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:03:39,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:03:39,114 INFO L87 Difference]: Start difference. First operand 1320 states and 1990 transitions. Second operand has 13 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:40,363 INFO L93 Difference]: Finished difference Result 1591 states and 2054 transitions. [2025-02-08 10:03:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:03:40,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2025-02-08 10:03:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:40,367 INFO L225 Difference]: With dead ends: 1591 [2025-02-08 10:03:40,367 INFO L226 Difference]: Without dead ends: 1590 [2025-02-08 10:03:40,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2025-02-08 10:03:40,368 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 1562 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:40,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 4788 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 10:03:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2025-02-08 10:03:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1320. [2025-02-08 10:03:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1003 states have (on average 1.8873379860418744) internal successors, (1893), 1264 states have internal predecessors, (1893), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2025-02-08 10:03:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1989 transitions. [2025-02-08 10:03:40,390 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1989 transitions. Word has length 27 [2025-02-08 10:03:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:40,391 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1989 transitions. [2025-02-08 10:03:40,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1989 transitions. [2025-02-08 10:03:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 10:03:40,391 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:40,391 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] [2025-02-08 10:03:40,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:40,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 10:03:40,592 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_36_to_52_0Err174ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:40,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 918531809, now seen corresponding path program 1 times [2025-02-08 10:03:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096739503] [2025-02-08 10:03:40,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:40,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 10:03:40,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 10:03:40,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:40,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362646716] [2025-02-08 10:03:40,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:40,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:40,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:40,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 10:03:40,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 10:03:40,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 10:03:40,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:40,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:40,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-02-08 10:03:40,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:40,703 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 11 [2025-02-08 10:03:40,706 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 [2025-02-08 10:03:40,710 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 [2025-02-08 10:03:40,714 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 [2025-02-08 10:03:40,787 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 [2025-02-08 10:03:40,791 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 [2025-02-08 10:03:40,917 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 [2025-02-08 10:03:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:40,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096739503] [2025-02-08 10:03:40,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362646716] [2025-02-08 10:03:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362646716] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:40,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:40,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 10:03:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836126931] [2025-02-08 10:03:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:40,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:03:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:40,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:03:40,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:03:40,933 INFO L87 Difference]: Start difference. First operand 1320 states and 1989 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:41,936 INFO L93 Difference]: Finished difference Result 1590 states and 2053 transitions. [2025-02-08 10:03:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:03:41,937 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2025-02-08 10:03:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:41,944 INFO L225 Difference]: With dead ends: 1590 [2025-02-08 10:03:41,944 INFO L226 Difference]: Without dead ends: 1589 [2025-02-08 10:03:41,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2025-02-08 10:03:41,949 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 1557 mSDsluCounter, 4660 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:41,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 5131 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 10:03:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2025-02-08 10:03:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1320. [2025-02-08 10:03:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1003 states have (on average 1.8863409770687936) internal successors, (1892), 1264 states have internal predecessors, (1892), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2025-02-08 10:03:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1988 transitions. [2025-02-08 10:03:41,975 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1988 transitions. Word has length 28 [2025-02-08 10:03:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:41,975 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1988 transitions. [2025-02-08 10:03:41,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1988 transitions. [2025-02-08 10:03:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 10:03:41,976 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:41,976 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:41,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 10:03:42,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 10:03:42,180 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_36_to_52_0Err182ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:42,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash -873882111, now seen corresponding path program 2 times [2025-02-08 10:03:42,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86063100] [2025-02-08 10:03:42,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:03:42,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:42,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 10:03:42,201 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 10:03:42,201 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:03:42,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 10:03:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:42,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86063100] [2025-02-08 10:03:42,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86063100] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:42,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850091221] [2025-02-08 10:03:42,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:03:42,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:42,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:42,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:42,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 10:03:42,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 10:03:42,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 10:03:42,763 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:03:42,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:42,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-02-08 10:03:42,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:42,773 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 [2025-02-08 10:03:42,776 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 [2025-02-08 10:03:43,081 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 [2025-02-08 10:03:43,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:03:43,185 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 18 [2025-02-08 10:03:43,217 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 [2025-02-08 10:03:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 10:03:43,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850091221] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:43,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:03:43,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 29 [2025-02-08 10:03:43,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208464234] [2025-02-08 10:03:43,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:43,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-08 10:03:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:43,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-08 10:03:43,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1338, Unknown=0, NotChecked=0, Total=1482 [2025-02-08 10:03:43,711 INFO L87 Difference]: Start difference. First operand 1320 states and 1988 transitions. Second operand has 31 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 26 states have internal predecessors, (39), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:03:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:45,202 INFO L93 Difference]: Finished difference Result 1932 states and 2573 transitions. [2025-02-08 10:03:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 10:03:45,203 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 26 states have internal predecessors, (39), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2025-02-08 10:03:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:45,207 INFO L225 Difference]: With dead ends: 1932 [2025-02-08 10:03:45,207 INFO L226 Difference]: Without dead ends: 1931 [2025-02-08 10:03:45,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=327, Invalid=2325, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 10:03:45,208 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 3040 mSDsluCounter, 9170 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 9661 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:45,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3046 Valid, 9661 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 10:03:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2025-02-08 10:03:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1322. [2025-02-08 10:03:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1004 states have (on average 1.8854581673306774) internal successors, (1893), 1265 states have internal predecessors, (1893), 41 states have call successors, (41), 13 states have call predecessors, (41), 20 states have return successors, (60), 43 states have call predecessors, (60), 41 states have call successors, (60) [2025-02-08 10:03:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1994 transitions. [2025-02-08 10:03:45,233 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1994 transitions. Word has length 30 [2025-02-08 10:03:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:45,234 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1994 transitions. [2025-02-08 10:03:45,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 26 states have internal predecessors, (39), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:03:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1994 transitions. [2025-02-08 10:03:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 10:03:45,234 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:45,234 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2025-02-08 10:03:45,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:45,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 10:03:45,439 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:45,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:45,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1943222703, now seen corresponding path program 2 times [2025-02-08 10:03:45,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:45,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900016942] [2025-02-08 10:03:45,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:03:45,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:45,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 10:03:45,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:03:45,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:03:45,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900016942] [2025-02-08 10:03:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900016942] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174422697] [2025-02-08 10:03:45,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:03:45,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:45,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:45,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:45,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 10:03:45,958 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 10:03:45,984 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:03:45,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:03:45,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:45,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-02-08 10:03:45,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:45,989 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 [2025-02-08 10:03:46,012 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 [2025-02-08 10:03:46,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-08 10:03:46,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-08 10:03:46,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-08 10:03:46,099 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 [2025-02-08 10:03:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:46,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174422697] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:03:46,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:03:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 41 [2025-02-08 10:03:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265806203] [2025-02-08 10:03:46,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:46,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 10:03:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:46,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 10:03:46,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1463, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 10:03:46,344 INFO L87 Difference]: Start difference. First operand 1322 states and 1994 transitions. Second operand has 43 states, 40 states have (on average 1.75) internal successors, (70), 32 states have internal predecessors, (70), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:03:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:46,937 INFO L93 Difference]: Finished difference Result 1383 states and 2078 transitions. [2025-02-08 10:03:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-08 10:03:46,937 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 1.75) internal successors, (70), 32 states have internal predecessors, (70), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-08 10:03:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:46,944 INFO L225 Difference]: With dead ends: 1383 [2025-02-08 10:03:46,944 INFO L226 Difference]: Without dead ends: 1382 [2025-02-08 10:03:46,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2025-02-08 10:03:46,945 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 220 mSDsluCounter, 5344 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 5899 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:46,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 5899 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2025-02-08 10:03:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2025-02-08 10:03:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1046 states have (on average 1.855640535372849) internal successors, (1941), 1313 states have internal predecessors, (1941), 47 states have call successors, (47), 19 states have call predecessors, (47), 32 states have return successors, (84), 49 states have call predecessors, (84), 47 states have call successors, (84) [2025-02-08 10:03:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2072 transitions. [2025-02-08 10:03:46,981 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2072 transitions. Word has length 31 [2025-02-08 10:03:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:46,981 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 2072 transitions. [2025-02-08 10:03:46,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 1.75) internal successors, (70), 32 states have internal predecessors, (70), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:03:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2072 transitions. [2025-02-08 10:03:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 10:03:46,982 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:46,982 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] [2025-02-08 10:03:46,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:47,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 10:03:47,183 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_36_to_52_0Err179ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2025-02-08 10:03:47,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1296126705, now seen corresponding path program 1 times [2025-02-08 10:03:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:47,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267166679] [2025-02-08 10:03:47,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:47,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:03:47,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:03:47,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:47,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462701113] [2025-02-08 10:03:47,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:47,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:47,205 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:47,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 10:03:47,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:03:47,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:03:47,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:47,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:47,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 10:03:47,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:47,307 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 11 [2025-02-08 10:03:47,323 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 [2025-02-08 10:03:47,337 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 [2025-02-08 10:03:47,487 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 40 treesize of output 17 [2025-02-08 10:03:47,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-02-08 10:03:47,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:03:47,526 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 30 treesize of output 30 [2025-02-08 10:03:51,651 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 [2025-02-08 10:03:51,655 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 [2025-02-08 10:03:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:51,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:51,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:51,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267166679] [2025-02-08 10:03:51,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:51,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462701113] [2025-02-08 10:03:51,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462701113] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:51,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:03:51,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-02-08 10:03:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751198360] [2025-02-08 10:03:51,749 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:51,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:03:51,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:51,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:03:51,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=174, Unknown=1, NotChecked=0, Total=210 [2025-02-08 10:03:51,750 INFO L87 Difference]: Start difference. First operand 1382 states and 2072 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:55,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:59,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:03,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:07,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:11,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:15,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:20,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:24,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:28,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 10:04:32,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 10:04:36,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:40,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 10:04:44,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 10:04:49,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:53,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:57,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]