./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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_hard2.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 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 14:35:52,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 14:35:52,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 14:35:52,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 14:35:52,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 14:35:52,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 14:35:52,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 14:35:52,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 14:35:52,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 14:35:52,638 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 14:35:52,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 14:35:52,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 14:35:52,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 14:35:52,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 14:35:52,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 14:35:52,639 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 14:35:52,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:35:52,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 14:35:52,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 14:35:52,640 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 -> 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 [2025-02-06 14:35:52,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 14:35:52,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 14:35:52,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 14:35:52,970 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 14:35:52,970 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 14:35:52,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2025-02-06 14:35:54,117 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ab95c3ec/2dbc43c699b74ea4b8142f76e4b0546f/FLAG3df124da8 [2025-02-06 14:35:54,361 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 14:35:54,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2025-02-06 14:35:54,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ab95c3ec/2dbc43c699b74ea4b8142f76e4b0546f/FLAG3df124da8 [2025-02-06 14:35:54,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ab95c3ec/2dbc43c699b74ea4b8142f76e4b0546f [2025-02-06 14:35:54,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 14:35:54,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 14:35:54,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 14:35:54,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 14:35:54,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 14:35:54,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce871ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54, skipping insertion in model container [2025-02-06 14:35:54,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,406 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 14:35:54,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:35:54,541 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 14:35:54,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:35:54,570 INFO L204 MainTranslator]: Completed translation [2025-02-06 14:35:54,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54 WrapperNode [2025-02-06 14:35:54,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 14:35:54,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 14:35:54,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 14:35:54,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 14:35:54,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,589 INFO L138 Inliner]: procedures = 17, calls = 91, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2025-02-06 14:35:54,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 14:35:54,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 14:35:54,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 14:35:54,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 14:35:54,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,607 INFO L175 MemorySlicer]: Split 56 memory accesses to 8 slices as follows [2, 8, 12, 5, 6, 6, 8, 9]. 21 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 0, 3, 1, 2, 1, 2, 3]. [2025-02-06 14:35:54,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 14:35:54,621 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 14:35:54,621 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 14:35:54,625 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 14:35:54,626 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (1/1) ... [2025-02-06 14:35:54,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:35:54,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:35:54,655 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) [2025-02-06 14:35:54,660 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 [2025-02-06 14:35:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 14:35:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_50_0 [2025-02-06 14:35:54,678 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_50_0 [2025-02-06 14:35:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 14:35:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 14:35:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 14:35:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 14:35:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 14:35:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-06 14:35:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-06 14:35:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_37_0 [2025-02-06 14:35:54,680 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_37_0 [2025-02-06 14:35:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 14:35:54,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 14:35:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 14:35:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 14:35:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 14:35:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 14:35:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 14:35:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 14:35:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-06 14:35:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-06 14:35:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 14:35:54,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 14:35:54,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 14:35:54,774 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 14:35:54,776 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 14:35:54,962 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L110: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#B~0#1.base, main_~#B~0#1.offset);havoc main_~#B~0#1.base, main_~#B~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_~#d~0#1.base, main_~#d~0#1.offset);havoc main_~#d~0#1.base, main_~#d~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; [2025-02-06 14:35:54,982 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2025-02-06 14:35:54,982 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 14:35:54,988 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 14:35:54,989 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 14:35:54,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:35:54 BoogieIcfgContainer [2025-02-06 14:35:54,989 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 14:35:54,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 14:35:54,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 14:35:54,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 14:35:54,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:35:54" (1/3) ... [2025-02-06 14:35:54,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec92980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:35:54, skipping insertion in model container [2025-02-06 14:35:54,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:35:54" (2/3) ... [2025-02-06 14:35:54,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec92980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:35:54, skipping insertion in model container [2025-02-06 14:35:54,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:35:54" (3/3) ... [2025-02-06 14:35:54,996 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_hard2.c [2025-02-06 14:35:55,005 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 14:35:55,006 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_hard2.c that has 4 procedures, 89 locations, 1 initial locations, 0 loop locations, and 24 error locations. [2025-02-06 14:35:55,039 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 14:35:55,046 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;@9c86f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 14:35:55,047 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-02-06 14:35:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 50 states have (on average 1.6) internal successors, (80), 76 states have internal predecessors, (80), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 14:35:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 14:35:55,053 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:35:55,053 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:35:55,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_40_to_50_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:35:55,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:35:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1950151578, now seen corresponding path program 1 times [2025-02-06 14:35:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:35:55,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219015341] [2025-02-06 14:35:55,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:35:55,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:35:55,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 14:35:55,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 14:35:55,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:35:55,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:35:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:35:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:35:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219015341] [2025-02-06 14:35:55,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219015341] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:35:55,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:35:55,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 14:35:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064909739] [2025-02-06 14:35:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:35:55,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 14:35:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:35:55,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 14:35:55,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 14:35:55,259 INFO L87 Difference]: Start difference. First operand has 89 states, 50 states have (on average 1.6) internal successors, (80), 76 states have internal predecessors, (80), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:35:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:35:55,279 INFO L93 Difference]: Finished difference Result 174 states and 210 transitions. [2025-02-06 14:35:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 14:35:55,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-02-06 14:35:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:35:55,285 INFO L225 Difference]: With dead ends: 174 [2025-02-06 14:35:55,285 INFO L226 Difference]: Without dead ends: 80 [2025-02-06 14:35:55,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 14:35:55,293 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:35:55,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:35:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-06 14:35:55,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-02-06 14:35:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 69 states have internal predecessors, (70), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 14:35:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2025-02-06 14:35:55,316 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 11 [2025-02-06 14:35:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:35:55,316 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2025-02-06 14:35:55,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:35:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2025-02-06 14:35:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 14:35:55,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:35:55,317 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:35:55,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 14:35:55,317 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_37_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:35:55,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:35:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 830803772, now seen corresponding path program 1 times [2025-02-06 14:35:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:35:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715801511] [2025-02-06 14:35:55,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:35:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:35:55,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 14:35:55,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 14:35:55,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:35:55,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:35:55,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748847149] [2025-02-06 14:35:55,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:35:55,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:35:55,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:35:55,355 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) [2025-02-06 14:35:55,356 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 [2025-02-06 14:35:55,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 14:35:55,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 14:35:55,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:35:55,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:35:55,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 14:35:55,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:35:55,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 14:35:55,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 14:35:55,653 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 [2025-02-06 14:35:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 14:35:55,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:35:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:35:55,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715801511] [2025-02-06 14:35:55,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:35:55,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748847149] [2025-02-06 14:35:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748847149] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:35:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:35:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:35:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393867863] [2025-02-06 14:35:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:35:55,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:35:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:35:55,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:35:55,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:35:55,668 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 14:35:59,750 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] [2025-02-06 14:36:03,802 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] [2025-02-06 14:36:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:03,844 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2025-02-06 14:36:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:36:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-02-06 14:36:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:03,846 INFO L225 Difference]: With dead ends: 146 [2025-02-06 14:36:03,846 INFO L226 Difference]: Without dead ends: 145 [2025-02-06 14:36:03,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:36:03,847 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 74 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:03,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 375 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2025-02-06 14:36:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-06 14:36:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 113. [2025-02-06 14:36:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 93 states have internal predecessors, (103), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-06 14:36:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2025-02-06 14:36:03,857 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 18 [2025-02-06 14:36:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:03,857 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2025-02-06 14:36:03,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 14:36:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2025-02-06 14:36:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 14:36:03,858 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:03,858 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:03,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 14:36:04,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:04,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_37_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:36:04,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash -14886816, now seen corresponding path program 1 times [2025-02-06 14:36:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:04,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763023965] [2025-02-06 14:36:04,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:04,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 14:36:04,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 14:36:04,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:04,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881988591] [2025-02-06 14:36:04,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:04,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:04,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:04,117 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) [2025-02-06 14:36:04,120 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 [2025-02-06 14:36:04,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 14:36:04,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 14:36:04,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:04,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:04,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 14:36:04,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:04,210 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 [2025-02-06 14:36:04,213 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 [2025-02-06 14:36:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 14:36:04,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763023965] [2025-02-06 14:36:04,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881988591] [2025-02-06 14:36:04,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881988591] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:04,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:04,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:36:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475585888] [2025-02-06 14:36:04,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:04,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:36:04,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:04,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:36:04,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:36:04,383 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 14:36:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:04,518 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2025-02-06 14:36:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:36:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-02-06 14:36:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:04,519 INFO L225 Difference]: With dead ends: 145 [2025-02-06 14:36:04,519 INFO L226 Difference]: Without dead ends: 144 [2025-02-06 14:36:04,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:36:04,520 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 71 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:04,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 409 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:36:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-06 14:36:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2025-02-06 14:36:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 68 states have (on average 1.5) internal successors, (102), 93 states have internal predecessors, (102), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-06 14:36:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2025-02-06 14:36:04,532 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 19 [2025-02-06 14:36:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:04,532 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2025-02-06 14:36:04,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 14:36:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2025-02-06 14:36:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 14:36:04,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:04,533 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:04,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 14:36:04,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:04,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_37_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:36:04,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -925445855, now seen corresponding path program 1 times [2025-02-06 14:36:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170811864] [2025-02-06 14:36:04,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:04,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 14:36:04,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 14:36:04,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:04,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:36:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170811864] [2025-02-06 14:36:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170811864] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:36:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375082109] [2025-02-06 14:36:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:05,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:36:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:05,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:36:05,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:36:05,067 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 14:36:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:05,145 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2025-02-06 14:36:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:36:05,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2025-02-06 14:36:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:05,146 INFO L225 Difference]: With dead ends: 117 [2025-02-06 14:36:05,146 INFO L226 Difference]: Without dead ends: 115 [2025-02-06 14:36:05,147 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 [2025-02-06 14:36:05,147 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 16 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:05,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 364 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:36:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-02-06 14:36:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-02-06 14:36:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 95 states have internal predecessors, (104), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-06 14:36:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2025-02-06 14:36:05,154 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 27 [2025-02-06 14:36:05,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:05,155 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2025-02-06 14:36:05,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 14:36:05,155 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2025-02-06 14:36:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 14:36:05,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:05,156 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:05,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 14:36:05,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:36:05,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -295235809, now seen corresponding path program 1 times [2025-02-06 14:36:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600083837] [2025-02-06 14:36:05,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:05,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:05,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 14:36:05,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 14:36:05,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:05,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:36:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600083837] [2025-02-06 14:36:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600083837] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:05,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:36:05,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52786325] [2025-02-06 14:36:05,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:05,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:36:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:05,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:36:05,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:36:05,312 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 14:36:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:05,390 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2025-02-06 14:36:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:36:05,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2025-02-06 14:36:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:05,392 INFO L225 Difference]: With dead ends: 119 [2025-02-06 14:36:05,392 INFO L226 Difference]: Without dead ends: 117 [2025-02-06 14:36:05,392 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 [2025-02-06 14:36:05,393 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 18 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:05,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 372 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:36:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-06 14:36:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-02-06 14:36:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 97 states have internal predecessors, (106), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-06 14:36:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2025-02-06 14:36:05,411 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 29 [2025-02-06 14:36:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:05,411 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2025-02-06 14:36:05,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 14:36:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2025-02-06 14:36:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-06 14:36:05,411 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:05,411 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:05,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 14:36:05,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_40_to_50_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:36:05,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash -441304298, now seen corresponding path program 1 times [2025-02-06 14:36:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:05,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357803865] [2025-02-06 14:36:05,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:05,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 14:36:05,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 14:36:05,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:05,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518109005] [2025-02-06 14:36:05,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:05,451 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) [2025-02-06 14:36:05,453 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 [2025-02-06 14:36:05,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 14:36:05,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 14:36:05,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:05,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:05,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-06 14:36:05,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:05,564 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 [2025-02-06 14:36:05,570 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 [2025-02-06 14:36:05,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 14:36:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:36:05,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:05,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:05,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357803865] [2025-02-06 14:36:05,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518109005] [2025-02-06 14:36:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518109005] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:05,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:05,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:36:05,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410803134] [2025-02-06 14:36:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:05,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:36:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:05,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:36:05,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:36:05,744 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:36:09,870 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] [2025-02-06 14:36:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:09,939 INFO L93 Difference]: Finished difference Result 174 states and 203 transitions. [2025-02-06 14:36:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:36:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2025-02-06 14:36:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:09,941 INFO L225 Difference]: With dead ends: 174 [2025-02-06 14:36:09,941 INFO L226 Difference]: Without dead ends: 173 [2025-02-06 14:36:09,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:36:09,942 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 100 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:09,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 336 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-02-06 14:36:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-02-06 14:36:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2025-02-06 14:36:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.4731182795698925) internal successors, (137), 119 states have internal predecessors, (137), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2025-02-06 14:36:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 180 transitions. [2025-02-06 14:36:09,955 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 180 transitions. Word has length 32 [2025-02-06 14:36:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:09,955 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 180 transitions. [2025-02-06 14:36:09,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:36:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 180 transitions. [2025-02-06 14:36:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 14:36:09,956 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:09,956 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:09,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 14:36:10,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:10,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_40_to_50_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:36:10,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash -795531345, now seen corresponding path program 1 times [2025-02-06 14:36:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:10,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591227763] [2025-02-06 14:36:10,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:10,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 14:36:10,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 14:36:10,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:10,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:10,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742420612] [2025-02-06 14:36:10,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:10,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:10,188 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) [2025-02-06 14:36:10,189 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 [2025-02-06 14:36:10,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 14:36:10,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 14:36:10,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:10,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:10,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-06 14:36:10,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:10,280 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 [2025-02-06 14:36:10,282 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 [2025-02-06 14:36:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:36:10,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591227763] [2025-02-06 14:36:10,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742420612] [2025-02-06 14:36:10,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742420612] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:10,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:10,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:36:10,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854669496] [2025-02-06 14:36:10,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:10,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:36:10,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:10,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:36:10,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:36:10,456 INFO L87 Difference]: Start difference. First operand 144 states and 180 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:36:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:10,627 INFO L93 Difference]: Finished difference Result 173 states and 201 transitions. [2025-02-06 14:36:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:36:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2025-02-06 14:36:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:10,629 INFO L225 Difference]: With dead ends: 173 [2025-02-06 14:36:10,629 INFO L226 Difference]: Without dead ends: 172 [2025-02-06 14:36:10,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:36:10,630 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 132 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:10,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 302 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:36:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-02-06 14:36:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2025-02-06 14:36:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 119 states have internal predecessors, (135), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2025-02-06 14:36:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 178 transitions. [2025-02-06 14:36:10,643 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 178 transitions. Word has length 33 [2025-02-06 14:36:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:10,643 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 178 transitions. [2025-02-06 14:36:10,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:36:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 178 transitions. [2025-02-06 14:36:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 14:36:10,644 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:10,644 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:10,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 14:36:10,845 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,SelfDestructingSolverStorable6 [2025-02-06 14:36:10,845 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_40_to_50_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:36:10,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:10,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1108332084, now seen corresponding path program 1 times [2025-02-06 14:36:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:10,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593751719] [2025-02-06 14:36:10,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:10,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:10,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 14:36:10,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 14:36:10,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:10,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74447516] [2025-02-06 14:36:10,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:10,882 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) [2025-02-06 14:36:10,883 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 [2025-02-06 14:36:10,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 14:36:10,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 14:36:10,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:10,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:10,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-02-06 14:36:10,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:10,993 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 [2025-02-06 14:36:10,995 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 [2025-02-06 14:36:11,286 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 [2025-02-06 14:36:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 14:36:11,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:36:56,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593751719] [2025-02-06 14:36:56,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74447516] [2025-02-06 14:36:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74447516] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:36:56,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:36:56,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-02-06 14:36:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641943637] [2025-02-06 14:36:56,974 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 14:36:56,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 14:36:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:56,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 14:36:56,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=219, Unknown=10, NotChecked=0, Total=272 [2025-02-06 14:36:56,975 INFO L87 Difference]: Start difference. First operand 144 states and 178 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 14:37:01,321 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] [2025-02-06 14:37:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:01,403 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2025-02-06 14:37:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 14:37:01,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2025-02-06 14:37:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:01,405 INFO L225 Difference]: With dead ends: 168 [2025-02-06 14:37:01,405 INFO L226 Difference]: Without dead ends: 167 [2025-02-06 14:37:01,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=78, Invalid=332, Unknown=10, NotChecked=0, Total=420 [2025-02-06 14:37:01,406 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 94 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:01,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 530 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 322 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2025-02-06 14:37:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-02-06 14:37:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144. [2025-02-06 14:37:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 119 states have internal predecessors, (133), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2025-02-06 14:37:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2025-02-06 14:37:01,425 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 34 [2025-02-06 14:37:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:01,426 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2025-02-06 14:37:01,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 14:37:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2025-02-06 14:37:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-06 14:37:01,427 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:01,427 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:01,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 14:37:01,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:01,628 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_40_to_50_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:37:01,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1443763, now seen corresponding path program 1 times [2025-02-06 14:37:01,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:01,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456398962] [2025-02-06 14:37:01,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:01,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 14:37:01,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 14:37:01,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:01,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:37:02,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:02,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456398962] [2025-02-06 14:37:02,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456398962] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:02,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 14:37:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99372251] [2025-02-06 14:37:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:02,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 14:37:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:02,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 14:37:02,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-06 14:37:02,122 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:37:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:02,444 INFO L93 Difference]: Finished difference Result 191 states and 229 transitions. [2025-02-06 14:37:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 14:37:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2025-02-06 14:37:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:02,446 INFO L225 Difference]: With dead ends: 191 [2025-02-06 14:37:02,446 INFO L226 Difference]: Without dead ends: 190 [2025-02-06 14:37:02,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:37:02,447 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 128 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:02,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 466 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-02-06 14:37:02,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2025-02-06 14:37:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.415929203539823) internal successors, (160), 140 states have internal predecessors, (160), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2025-02-06 14:37:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 215 transitions. [2025-02-06 14:37:02,470 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 215 transitions. Word has length 35 [2025-02-06 14:37:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:02,470 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 215 transitions. [2025-02-06 14:37:02,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:37:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 215 transitions. [2025-02-06 14:37:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 14:37:02,471 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:02,474 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:02,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 14:37:02,475 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_40_to_50_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:37:02,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2022958429, now seen corresponding path program 1 times [2025-02-06 14:37:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:02,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156799119] [2025-02-06 14:37:02,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:02,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 14:37:02,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:37:02,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:02,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:02,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115427903] [2025-02-06 14:37:02,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:02,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:02,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:02,506 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) [2025-02-06 14:37:02,508 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 [2025-02-06 14:37:02,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 14:37:02,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:37:02,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:02,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:02,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-06 14:37:02,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:02,596 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 [2025-02-06 14:37:02,599 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 [2025-02-06 14:37:02,744 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 [2025-02-06 14:37:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:37:02,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:02,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156799119] [2025-02-06 14:37:02,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:02,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115427903] [2025-02-06 14:37:02,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115427903] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:02,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:02,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 14:37:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291395847] [2025-02-06 14:37:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:02,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 14:37:02,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:02,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 14:37:02,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:37:02,757 INFO L87 Difference]: Start difference. First operand 171 states and 215 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:37:06,856 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] [2025-02-06 14:37:10,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:14,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:19,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:23,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:27,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:31,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:31,079 INFO L93 Difference]: Finished difference Result 190 states and 231 transitions. [2025-02-06 14:37:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 14:37:31,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2025-02-06 14:37:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:31,081 INFO L225 Difference]: With dead ends: 190 [2025-02-06 14:37:31,081 INFO L226 Difference]: Without dead ends: 189 [2025-02-06 14:37:31,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-02-06 14:37:31,084 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 221 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 36 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:31,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 333 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 28.2s Time] [2025-02-06 14:37:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-02-06 14:37:31,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2025-02-06 14:37:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.407079646017699) internal successors, (159), 140 states have internal predecessors, (159), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2025-02-06 14:37:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 214 transitions. [2025-02-06 14:37:31,102 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 214 transitions. Word has length 42 [2025-02-06 14:37:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:31,103 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 214 transitions. [2025-02-06 14:37:31,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:37:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 214 transitions. [2025-02-06 14:37:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 14:37:31,105 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:31,105 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:31,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 14:37:31,309 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,SelfDestructingSolverStorable9 [2025-02-06 14:37:31,309 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_40_to_50_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:37:31,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:31,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1712798146, now seen corresponding path program 1 times [2025-02-06 14:37:31,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:31,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891832231] [2025-02-06 14:37:31,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:31,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:31,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 14:37:31,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 14:37:31,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:31,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757422700] [2025-02-06 14:37:31,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:31,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:31,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:31,344 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) [2025-02-06 14:37:31,347 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 [2025-02-06 14:37:31,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 14:37:31,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 14:37:31,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:31,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:31,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-06 14:37:31,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:31,457 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 [2025-02-06 14:37:31,460 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 [2025-02-06 14:37:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 14:37:31,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:31,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891832231] [2025-02-06 14:37:31,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757422700] [2025-02-06 14:37:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757422700] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:31,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:31,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 14:37:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126211885] [2025-02-06 14:37:31,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:31,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 14:37:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:31,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 14:37:31,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:37:31,643 INFO L87 Difference]: Start difference. First operand 171 states and 214 transitions. Second operand has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:37:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:31,853 INFO L93 Difference]: Finished difference Result 189 states and 230 transitions. [2025-02-06 14:37:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 14:37:31,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2025-02-06 14:37:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:31,855 INFO L225 Difference]: With dead ends: 189 [2025-02-06 14:37:31,855 INFO L226 Difference]: Without dead ends: 188 [2025-02-06 14:37:31,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-02-06 14:37:31,855 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 165 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:31,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 301 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:37:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-02-06 14:37:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 171. [2025-02-06 14:37:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 140 states have internal predecessors, (158), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2025-02-06 14:37:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2025-02-06 14:37:31,869 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 43 [2025-02-06 14:37:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:31,870 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2025-02-06 14:37:31,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:37:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2025-02-06 14:37:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-06 14:37:31,872 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:31,872 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:31,883 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 [2025-02-06 14:37:32,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:32,077 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_30_to_37_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 14:37:32,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1002968824, now seen corresponding path program 1 times [2025-02-06 14:37:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795268030] [2025-02-06 14:37:32,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:32,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 14:37:32,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 14:37:32,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:32,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305505802] [2025-02-06 14:37:32,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:32,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:32,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:32,102 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) [2025-02-06 14:37:32,105 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 [2025-02-06 14:37:32,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 14:37:32,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 14:37:32,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:32,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:32,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-06 14:37:32,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:32,200 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 [2025-02-06 14:37:32,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 14:37:32,347 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 28 treesize of output 16 [2025-02-06 14:37:32,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2025-02-06 14:37:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:37:32,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:32,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:32,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795268030] [2025-02-06 14:37:32,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:32,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305505802] [2025-02-06 14:37:32,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305505802] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:37:32,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:37:32,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-02-06 14:37:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264019803] [2025-02-06 14:37:32,615 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:32,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 14:37:32,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:32,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 14:37:32,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-06 14:37:32,616 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 14:37:36,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:40,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]