./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 05:02:12,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 05:02:12,533 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 05:02:12,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 05:02:12,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 05:02:12,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 05:02:12,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 05:02:12,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 05:02:12,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 05:02:12,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 05:02:12,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 05:02:12,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 05:02:12,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 05:02:12,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 05:02:12,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 05:02:12,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 05:02:12,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 05:02:12,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 05:02:12,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 05:02:12,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 05:02:12,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 05:02:12,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 05:02:12,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 05:02:12,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 05:02:12,577 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 05:02:12,577 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 05:02:12,578 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 05:02:12,578 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 05:02:12,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 05:02:12,578 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 05:02:12,579 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 05:02:12,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 05:02:12,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 05:02:12,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 05:02:12,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 05:02:12,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 05:02:12,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 05:02:12,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 05:02:12,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 05:02:12,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 05:02:12,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 05:02:12,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 05:02:12,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 05:02:12,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 05:02:12,583 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 [2024-11-17 05:02:12,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 05:02:12,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 05:02:12,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 05:02:12,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 05:02:12,857 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 05:02:12,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-11-17 05:02:14,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 05:02:14,515 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 05:02:14,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-11-17 05:02:14,528 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f490b96c2/43428cbcce40477e8efcfb6a307ba301/FLAG7842f4fbe [2024-11-17 05:02:14,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f490b96c2/43428cbcce40477e8efcfb6a307ba301 [2024-11-17 05:02:14,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 05:02:14,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 05:02:14,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 05:02:14,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 05:02:14,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 05:02:14,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71795464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14, skipping insertion in model container [2024-11-17 05:02:14,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 05:02:14,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 05:02:14,809 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 05:02:14,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 05:02:14,858 INFO L204 MainTranslator]: Completed translation [2024-11-17 05:02:14,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14 WrapperNode [2024-11-17 05:02:14,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 05:02:14,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 05:02:14,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 05:02:14,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 05:02:14,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,898 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-11-17 05:02:14,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 05:02:14,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 05:02:14,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 05:02:14,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 05:02:14,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,942 INFO L175 MemorySlicer]: Split 41 memory accesses to 6 slices as follows [2, 8, 8, 12, 9, 2]. 29 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 2, 1]. [2024-11-17 05:02:14,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,956 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 05:02:14,967 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 05:02:14,967 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 05:02:14,967 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 05:02:14,968 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (1/1) ... [2024-11-17 05:02:14,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 05:02:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:15,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 05:02:15,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 05:02:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 05:02:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_39_0 [2024-11-17 05:02:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_39_0 [2024-11-17 05:02:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 05:02:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 05:02:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 05:02:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 05:02:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 05:02:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 05:02:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 05:02:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 05:02:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 05:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 05:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 05:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 05:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 05:02:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 05:02:15,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 05:02:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 05:02:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 05:02:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 05:02:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 05:02:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 05:02:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 05:02:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-17 05:02:15,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-17 05:02:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 05:02:15,158 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 05:02:15,160 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 05:02:15,488 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L76: call ULTIMATE.dealloc(main_~#n~0#1.base, main_~#n~0#1.offset);havoc main_~#n~0#1.base, main_~#n~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset;call ULTIMATE.dealloc(main_~#t~0#1.base, main_~#t~0#1.offset);havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2024-11-17 05:02:15,517 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-17 05:02:15,518 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 05:02:15,537 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 05:02:15,538 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 05:02:15,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 05:02:15 BoogieIcfgContainer [2024-11-17 05:02:15,538 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 05:02:15,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 05:02:15,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 05:02:15,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 05:02:15,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 05:02:14" (1/3) ... [2024-11-17 05:02:15,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74693804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:02:15, skipping insertion in model container [2024-11-17 05:02:15,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:02:14" (2/3) ... [2024-11-17 05:02:15,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74693804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:02:15, skipping insertion in model container [2024-11-17 05:02:15,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 05:02:15" (3/3) ... [2024-11-17 05:02:15,550 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1.c [2024-11-17 05:02:15,587 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 05:02:15,591 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-17 05:02:15,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 05:02:15,674 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;@50c96638, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 05:02:15,674 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-17 05:02:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 130 states have internal predecessors, (132), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-17 05:02:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 05:02:15,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:15,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 05:02:15,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_39_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:15,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:15,690 INFO L85 PathProgramCache]: Analyzing trace with hash 615557644, now seen corresponding path program 1 times [2024-11-17 05:02:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753101609] [2024-11-17 05:02:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:15,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753101609] [2024-11-17 05:02:16,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753101609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:16,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:16,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236122331] [2024-11-17 05:02:16,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:16,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:16,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:16,241 INFO L87 Difference]: Start difference. First operand has 140 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 130 states have internal predecessors, (132), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 05:02:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:16,450 INFO L93 Difference]: Finished difference Result 351 states and 388 transitions. [2024-11-17 05:02:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:16,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-17 05:02:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:16,460 INFO L225 Difference]: With dead ends: 351 [2024-11-17 05:02:16,460 INFO L226 Difference]: Without dead ends: 208 [2024-11-17 05:02:16,464 INFO L431 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 [2024-11-17 05:02:16,467 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 127 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:16,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 633 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-17 05:02:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 169. [2024-11-17 05:02:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 106 states have (on average 1.650943396226415) internal successors, (175), 156 states have internal predecessors, (175), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-17 05:02:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2024-11-17 05:02:16,516 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 6 [2024-11-17 05:02:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:16,516 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2024-11-17 05:02:16,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 05:02:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2024-11-17 05:02:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-17 05:02:16,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:16,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:16,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 05:02:16,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_39_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:16,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1280694692, now seen corresponding path program 1 times [2024-11-17 05:02:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:16,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145218026] [2024-11-17 05:02:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:16,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:16,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:16,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145218026] [2024-11-17 05:02:16,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145218026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:16,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:16,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295485883] [2024-11-17 05:02:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:16,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:16,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:16,751 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:16,908 INFO L93 Difference]: Finished difference Result 208 states and 218 transitions. [2024-11-17 05:02:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:16,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2024-11-17 05:02:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:16,911 INFO L225 Difference]: With dead ends: 208 [2024-11-17 05:02:16,911 INFO L226 Difference]: Without dead ends: 206 [2024-11-17 05:02:16,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:16,912 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 123 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:16,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 596 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-17 05:02:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 169. [2024-11-17 05:02:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 106 states have (on average 1.6320754716981132) internal successors, (173), 156 states have internal predecessors, (173), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-17 05:02:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 194 transitions. [2024-11-17 05:02:16,934 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 194 transitions. Word has length 16 [2024-11-17 05:02:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:16,935 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 194 transitions. [2024-11-17 05:02:16,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 194 transitions. [2024-11-17 05:02:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 05:02:16,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:16,936 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:16,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 05:02:16,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_28_to_39_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:16,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash 981107767, now seen corresponding path program 1 times [2024-11-17 05:02:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095361303] [2024-11-17 05:02:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:16,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:17,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:17,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095361303] [2024-11-17 05:02:17,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095361303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:17,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:17,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:17,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782384373] [2024-11-17 05:02:17,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:17,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:17,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:17,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:17,108 INFO L87 Difference]: Start difference. First operand 169 states and 194 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:17,250 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2024-11-17 05:02:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:17,251 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, (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 19 [2024-11-17 05:02:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:17,252 INFO L225 Difference]: With dead ends: 206 [2024-11-17 05:02:17,252 INFO L226 Difference]: Without dead ends: 204 [2024-11-17 05:02:17,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:17,254 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 111 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:17,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 595 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-17 05:02:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2024-11-17 05:02:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 106 states have (on average 1.6132075471698113) internal successors, (171), 156 states have internal predecessors, (171), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-17 05:02:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 192 transitions. [2024-11-17 05:02:17,283 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 192 transitions. Word has length 19 [2024-11-17 05:02:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:17,283 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 192 transitions. [2024-11-17 05:02:17,283 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 192 transitions. [2024-11-17 05:02:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-17 05:02:17,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:17,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:17,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 05:02:17,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_28_to_39_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:17,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2048240267, now seen corresponding path program 1 times [2024-11-17 05:02:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918196612] [2024-11-17 05:02:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372850009] [2024-11-17 05:02:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:17,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:17,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:17,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:17,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 05:02:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:17,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 05:02:17,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:17,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:17,644 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:17,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918196612] [2024-11-17 05:02:17,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372850009] [2024-11-17 05:02:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372850009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:17,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:17,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:17,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255318510] [2024-11-17 05:02:17,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:17,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:17,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:17,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:17,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:17,648 INFO L87 Difference]: Start difference. First operand 169 states and 192 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:17,818 INFO L93 Difference]: Finished difference Result 244 states and 253 transitions. [2024-11-17 05:02:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:17,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 21 [2024-11-17 05:02:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:17,820 INFO L225 Difference]: With dead ends: 244 [2024-11-17 05:02:17,820 INFO L226 Difference]: Without dead ends: 242 [2024-11-17 05:02:17,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-17 05:02:17,822 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 204 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:17,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 568 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-17 05:02:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 188. [2024-11-17 05:02:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.598360655737705) internal successors, (195), 172 states have internal predecessors, (195), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 220 transitions. [2024-11-17 05:02:17,834 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 220 transitions. Word has length 21 [2024-11-17 05:02:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:17,834 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 220 transitions. [2024-11-17 05:02:17,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 220 transitions. [2024-11-17 05:02:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 05:02:17,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:17,835 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:17,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:18,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:18,040 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_28_to_39_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:18,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1120733382, now seen corresponding path program 1 times [2024-11-17 05:02:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353366309] [2024-11-17 05:02:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:18,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328861845] [2024-11-17 05:02:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:18,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:18,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:18,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:18,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 05:02:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:18,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-17 05:02:18,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:18,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:18,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:18,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-17 05:02:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:18,369 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353366309] [2024-11-17 05:02:18,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328861845] [2024-11-17 05:02:18,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328861845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:18,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:18,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:18,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217037702] [2024-11-17 05:02:18,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:18,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:18,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:18,373 INFO L87 Difference]: Start difference. First operand 188 states and 220 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-11-17 05:02:22,510 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] [2024-11-17 05:02:26,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:02:30,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:02:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:30,594 INFO L93 Difference]: Finished difference Result 247 states and 256 transitions. [2024-11-17 05:02:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:30,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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 29 [2024-11-17 05:02:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:30,596 INFO L225 Difference]: With dead ends: 247 [2024-11-17 05:02:30,596 INFO L226 Difference]: Without dead ends: 246 [2024-11-17 05:02:30,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:30,597 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 224 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:30,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 550 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 161 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-17 05:02:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-17 05:02:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 188. [2024-11-17 05:02:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5901639344262295) internal successors, (194), 172 states have internal predecessors, (194), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 219 transitions. [2024-11-17 05:02:30,620 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 219 transitions. Word has length 29 [2024-11-17 05:02:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:30,620 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 219 transitions. [2024-11-17 05:02:30,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-11-17 05:02:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 219 transitions. [2024-11-17 05:02:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-17 05:02:30,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:30,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:30,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 05:02:30,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:30,822 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_28_to_39_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:30,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash -382996460, now seen corresponding path program 1 times [2024-11-17 05:02:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:30,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070638197] [2024-11-17 05:02:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:30,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607892146] [2024-11-17 05:02:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:30,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:30,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:30,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:30,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 05:02:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:30,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 05:02:30,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:30,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:31,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070638197] [2024-11-17 05:02:31,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607892146] [2024-11-17 05:02:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607892146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:31,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:31,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518363133] [2024-11-17 05:02:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:31,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:31,081 INFO L87 Difference]: Start difference. First operand 188 states and 219 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-17 05:02:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:31,244 INFO L93 Difference]: Finished difference Result 246 states and 255 transitions. [2024-11-17 05:02:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:31,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 30 [2024-11-17 05:02:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:31,246 INFO L225 Difference]: With dead ends: 246 [2024-11-17 05:02:31,247 INFO L226 Difference]: Without dead ends: 245 [2024-11-17 05:02:31,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:31,248 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 156 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:31,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 616 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-17 05:02:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 188. [2024-11-17 05:02:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5819672131147542) internal successors, (193), 172 states have internal predecessors, (193), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2024-11-17 05:02:31,267 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 30 [2024-11-17 05:02:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:31,268 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2024-11-17 05:02:31,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-17 05:02:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2024-11-17 05:02:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 05:02:31,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:31,269 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:31,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:31,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:31,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_28_to_39_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:31,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1307589810, now seen corresponding path program 1 times [2024-11-17 05:02:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:31,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450764722] [2024-11-17 05:02:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:31,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:31,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:31,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:31,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450764722] [2024-11-17 05:02:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450764722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:31,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:31,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:31,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146967206] [2024-11-17 05:02:31,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:31,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:31,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:31,616 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 6 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2024-11-17 05:02:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:31,773 INFO L93 Difference]: Finished difference Result 229 states and 239 transitions. [2024-11-17 05:02:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 32 [2024-11-17 05:02:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:31,775 INFO L225 Difference]: With dead ends: 229 [2024-11-17 05:02:31,775 INFO L226 Difference]: Without dead ends: 227 [2024-11-17 05:02:31,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:31,776 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 134 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:31,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 572 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-17 05:02:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 188. [2024-11-17 05:02:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5655737704918034) internal successors, (191), 172 states have internal predecessors, (191), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 216 transitions. [2024-11-17 05:02:31,790 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 216 transitions. Word has length 32 [2024-11-17 05:02:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:31,790 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 216 transitions. [2024-11-17 05:02:31,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2024-11-17 05:02:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 216 transitions. [2024-11-17 05:02:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-17 05:02:31,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:31,792 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:31,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 05:02:31,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_28_to_39_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:31,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1831610032, now seen corresponding path program 1 times [2024-11-17 05:02:31,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:31,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499630510] [2024-11-17 05:02:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:31,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:31,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871195958] [2024-11-17 05:02:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:31,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:31,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:31,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:31,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 05:02:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:31,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-17 05:02:31,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:31,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:31,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:32,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:32,645 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 38 treesize of output 26 [2024-11-17 05:02:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 05:02:32,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:32,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499630510] [2024-11-17 05:02:32,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:32,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871195958] [2024-11-17 05:02:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871195958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:32,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 05:02:32,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-17 05:02:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39155251] [2024-11-17 05:02:32,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:32,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 05:02:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 05:02:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-17 05:02:32,739 INFO L87 Difference]: Start difference. First operand 188 states and 216 transitions. Second operand has 22 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 05:02:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:33,863 INFO L93 Difference]: Finished difference Result 248 states and 257 transitions. [2024-11-17 05:02:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 05:02:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2024-11-17 05:02:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:33,865 INFO L225 Difference]: With dead ends: 248 [2024-11-17 05:02:33,866 INFO L226 Difference]: Without dead ends: 246 [2024-11-17 05:02:33,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 05:02:33,867 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 463 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:33,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1167 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-17 05:02:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-17 05:02:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 188. [2024-11-17 05:02:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5491803278688525) internal successors, (189), 172 states have internal predecessors, (189), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2024-11-17 05:02:33,878 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 34 [2024-11-17 05:02:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:33,879 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2024-11-17 05:02:33,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 05:02:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2024-11-17 05:02:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-17 05:02:33,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:33,881 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:33,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:34,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:34,086 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_28_to_39_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:34,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2065037299, now seen corresponding path program 1 times [2024-11-17 05:02:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437741274] [2024-11-17 05:02:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:34,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:34,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437741274] [2024-11-17 05:02:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437741274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:34,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:34,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576041767] [2024-11-17 05:02:34,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:34,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:34,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:34,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:34,315 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 05:02:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:34,432 INFO L93 Difference]: Finished difference Result 229 states and 239 transitions. [2024-11-17 05:02:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:34,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 37 [2024-11-17 05:02:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:34,434 INFO L225 Difference]: With dead ends: 229 [2024-11-17 05:02:34,434 INFO L226 Difference]: Without dead ends: 227 [2024-11-17 05:02:34,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:34,435 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 113 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:34,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 578 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-17 05:02:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 188. [2024-11-17 05:02:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 172 states have internal predecessors, (187), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 212 transitions. [2024-11-17 05:02:34,443 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 212 transitions. Word has length 37 [2024-11-17 05:02:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:34,443 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 212 transitions. [2024-11-17 05:02:34,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 05:02:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 212 transitions. [2024-11-17 05:02:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 05:02:34,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:34,444 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 05:02:34,445 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_28_to_39_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:34,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash 225953585, now seen corresponding path program 1 times [2024-11-17 05:02:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383711721] [2024-11-17 05:02:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:34,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:34,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383711721] [2024-11-17 05:02:34,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383711721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:34,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:34,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355489829] [2024-11-17 05:02:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:34,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:34,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:34,619 INFO L87 Difference]: Start difference. First operand 188 states and 212 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (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) [2024-11-17 05:02:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:34,836 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2024-11-17 05:02:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (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 39 [2024-11-17 05:02:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:34,838 INFO L225 Difference]: With dead ends: 227 [2024-11-17 05:02:34,838 INFO L226 Difference]: Without dead ends: 225 [2024-11-17 05:02:34,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:34,839 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 107 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:34,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 662 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:02:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-17 05:02:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 188. [2024-11-17 05:02:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5163934426229508) internal successors, (185), 172 states have internal predecessors, (185), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2024-11-17 05:02:34,847 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 39 [2024-11-17 05:02:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:34,848 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2024-11-17 05:02:34,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (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) [2024-11-17 05:02:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2024-11-17 05:02:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-17 05:02:34,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:34,849 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:34,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 05:02:34,849 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_28_to_39_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:34,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1585373461, now seen corresponding path program 1 times [2024-11-17 05:02:34,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:34,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085261691] [2024-11-17 05:02:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:34,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:35,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:35,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:35,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085261691] [2024-11-17 05:02:35,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085261691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:35,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:35,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:35,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662698086] [2024-11-17 05:02:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:35,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:35,258 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (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) [2024-11-17 05:02:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:35,846 INFO L93 Difference]: Finished difference Result 216 states and 226 transitions. [2024-11-17 05:02:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:35,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (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 40 [2024-11-17 05:02:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:35,847 INFO L225 Difference]: With dead ends: 216 [2024-11-17 05:02:35,847 INFO L226 Difference]: Without dead ends: 214 [2024-11-17 05:02:35,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:02:35,848 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 118 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:35,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 651 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-17 05:02:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 188. [2024-11-17 05:02:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.5) internal successors, (183), 172 states have internal predecessors, (183), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2024-11-17 05:02:35,856 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 40 [2024-11-17 05:02:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:35,856 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2024-11-17 05:02:35,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (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) [2024-11-17 05:02:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2024-11-17 05:02:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-17 05:02:35,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:35,858 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:35,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 05:02:35,858 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_28_to_39_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:35,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1914622653, now seen corresponding path program 1 times [2024-11-17 05:02:35,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:35,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457193453] [2024-11-17 05:02:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457193453] [2024-11-17 05:02:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457193453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:36,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:36,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:36,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842227529] [2024-11-17 05:02:36,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:36,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:36,058 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-17 05:02:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:36,147 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2024-11-17 05:02:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:36,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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 50 [2024-11-17 05:02:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:36,150 INFO L225 Difference]: With dead ends: 199 [2024-11-17 05:02:36,150 INFO L226 Difference]: Without dead ends: 197 [2024-11-17 05:02:36,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:36,152 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 56 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:36,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 608 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-17 05:02:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2024-11-17 05:02:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 124 states have (on average 1.4919354838709677) internal successors, (185), 174 states have internal predecessors, (185), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 05:02:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2024-11-17 05:02:36,161 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 50 [2024-11-17 05:02:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:36,162 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2024-11-17 05:02:36,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-17 05:02:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2024-11-17 05:02:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-17 05:02:36,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:36,166 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:36,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 05:02:36,167 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:36,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1357637380, now seen corresponding path program 1 times [2024-11-17 05:02:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106837507] [2024-11-17 05:02:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:02:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:02:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:02:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106837507] [2024-11-17 05:02:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106837507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182097561] [2024-11-17 05:02:36,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:36,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:36,338 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:36,466 INFO L93 Difference]: Finished difference Result 198 states and 212 transitions. [2024-11-17 05:02:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 05:02:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2024-11-17 05:02:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:36,468 INFO L225 Difference]: With dead ends: 198 [2024-11-17 05:02:36,468 INFO L226 Difference]: Without dead ends: 194 [2024-11-17 05:02:36,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:36,469 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 76 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:36,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 435 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-17 05:02:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-11-17 05:02:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 125 states have (on average 1.456) internal successors, (182), 175 states have internal predecessors, (182), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-17 05:02:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 208 transitions. [2024-11-17 05:02:36,478 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 208 transitions. Word has length 53 [2024-11-17 05:02:36,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:36,478 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 208 transitions. [2024-11-17 05:02:36,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 208 transitions. [2024-11-17 05:02:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-17 05:02:36,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:36,479 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:36,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 05:02:36,479 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_28_to_39_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:36,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1357782551, now seen corresponding path program 1 times [2024-11-17 05:02:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:36,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301194464] [2024-11-17 05:02:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:36,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:36,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301194464] [2024-11-17 05:02:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301194464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:36,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:36,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238421322] [2024-11-17 05:02:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:36,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:36,624 INFO L87 Difference]: Start difference. First operand 192 states and 208 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (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) [2024-11-17 05:02:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:36,740 INFO L93 Difference]: Finished difference Result 219 states and 229 transitions. [2024-11-17 05:02:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:36,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (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 53 [2024-11-17 05:02:36,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:36,742 INFO L225 Difference]: With dead ends: 219 [2024-11-17 05:02:36,742 INFO L226 Difference]: Without dead ends: 217 [2024-11-17 05:02:36,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:36,743 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 78 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:36,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 603 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-17 05:02:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 195. [2024-11-17 05:02:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 128 states have (on average 1.4453125) internal successors, (185), 178 states have internal predecessors, (185), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-17 05:02:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 211 transitions. [2024-11-17 05:02:36,751 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 211 transitions. Word has length 53 [2024-11-17 05:02:36,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:36,752 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 211 transitions. [2024-11-17 05:02:36,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (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) [2024-11-17 05:02:36,752 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 211 transitions. [2024-11-17 05:02:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-17 05:02:36,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:36,753 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:36,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 05:02:36,753 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:36,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:36,753 INFO L85 PathProgramCache]: Analyzing trace with hash 301994014, now seen corresponding path program 1 times [2024-11-17 05:02:36,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:36,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998016962] [2024-11-17 05:02:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:36,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:37,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:37,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998016962] [2024-11-17 05:02:37,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998016962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:37,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:37,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:37,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274715622] [2024-11-17 05:02:37,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:37,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:37,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:37,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:37,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:37,066 INFO L87 Difference]: Start difference. First operand 195 states and 211 transitions. Second operand has 7 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-11-17 05:02:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:37,241 INFO L93 Difference]: Finished difference Result 212 states and 223 transitions. [2024-11-17 05:02:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:37,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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 56 [2024-11-17 05:02:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:37,243 INFO L225 Difference]: With dead ends: 212 [2024-11-17 05:02:37,243 INFO L226 Difference]: Without dead ends: 211 [2024-11-17 05:02:37,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:37,246 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 69 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:37,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 665 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-17 05:02:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 197. [2024-11-17 05:02:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 130 states have (on average 1.4384615384615385) internal successors, (187), 180 states have internal predecessors, (187), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-17 05:02:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 213 transitions. [2024-11-17 05:02:37,256 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 213 transitions. Word has length 56 [2024-11-17 05:02:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:37,256 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 213 transitions. [2024-11-17 05:02:37,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-11-17 05:02:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 213 transitions. [2024-11-17 05:02:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-17 05:02:37,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:37,257 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:37,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 05:02:37,257 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:37,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash 771879814, now seen corresponding path program 1 times [2024-11-17 05:02:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364750507] [2024-11-17 05:02:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:37,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364750507] [2024-11-17 05:02:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364750507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756077205] [2024-11-17 05:02:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:37,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:37,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:37,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:37,595 INFO L87 Difference]: Start difference. First operand 197 states and 213 transitions. Second operand has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-17 05:02:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:37,758 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-17 05:02:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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 57 [2024-11-17 05:02:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:37,760 INFO L225 Difference]: With dead ends: 212 [2024-11-17 05:02:37,760 INFO L226 Difference]: Without dead ends: 211 [2024-11-17 05:02:37,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:37,760 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 68 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:37,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 670 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-17 05:02:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 198. [2024-11-17 05:02:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 181 states have internal predecessors, (188), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-17 05:02:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 214 transitions. [2024-11-17 05:02:37,772 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 214 transitions. Word has length 57 [2024-11-17 05:02:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:37,772 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 214 transitions. [2024-11-17 05:02:37,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-17 05:02:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 214 transitions. [2024-11-17 05:02:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-17 05:02:37,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:37,773 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:37,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 05:02:37,773 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_28_to_39_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:37,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash -142399690, now seen corresponding path program 1 times [2024-11-17 05:02:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:37,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942782075] [2024-11-17 05:02:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:38,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:38,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:38,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:38,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942782075] [2024-11-17 05:02:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942782075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353310206] [2024-11-17 05:02:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:38,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:38,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:38,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 05:02:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:38,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 05:02:38,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:38,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:38,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:02:38,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:02:38,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:02:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:02:38,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:38,792 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 25 treesize of output 17 [2024-11-17 05:02:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 05:02:38,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353310206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:38,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 05:02:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-17 05:02:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459697238] [2024-11-17 05:02:38,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:38,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-17 05:02:38,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-17 05:02:38,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-11-17 05:02:38,856 INFO L87 Difference]: Start difference. First operand 198 states and 214 transitions. Second operand has 29 states, 25 states have (on average 5.44) internal successors, (136), 24 states have internal predecessors, (136), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-17 05:02:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:39,605 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2024-11-17 05:02:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 05:02:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 5.44) internal successors, (136), 24 states have internal predecessors, (136), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 62 [2024-11-17 05:02:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:39,606 INFO L225 Difference]: With dead ends: 223 [2024-11-17 05:02:39,607 INFO L226 Difference]: Without dead ends: 220 [2024-11-17 05:02:39,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 107 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 05:02:39,608 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 452 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:39,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 2094 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:02:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-17 05:02:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 195. [2024-11-17 05:02:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 131 states have (on average 1.4122137404580153) internal successors, (185), 178 states have internal predecessors, (185), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-17 05:02:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 211 transitions. [2024-11-17 05:02:39,617 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 211 transitions. Word has length 62 [2024-11-17 05:02:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:39,617 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 211 transitions. [2024-11-17 05:02:39,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 5.44) internal successors, (136), 24 states have internal predecessors, (136), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-17 05:02:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 211 transitions. [2024-11-17 05:02:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 05:02:39,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:39,618 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:39,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:39,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 05:02:39,819 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:39,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash -375658012, now seen corresponding path program 1 times [2024-11-17 05:02:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:39,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983451794] [2024-11-17 05:02:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:39,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:39,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:02:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:39,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:02:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:39,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:02:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:39,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-17 05:02:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 05:02:39,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:39,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983451794] [2024-11-17 05:02:39,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983451794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:39,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:39,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895839994] [2024-11-17 05:02:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:39,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:39,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:40,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:40,000 INFO L87 Difference]: Start difference. First operand 195 states and 211 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 05:02:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:40,145 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2024-11-17 05:02:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2024-11-17 05:02:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:40,149 INFO L225 Difference]: With dead ends: 200 [2024-11-17 05:02:40,149 INFO L226 Difference]: Without dead ends: 198 [2024-11-17 05:02:40,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:40,150 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 98 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:40,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 369 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-17 05:02:40,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-17 05:02:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 131 states have (on average 1.3969465648854962) internal successors, (183), 178 states have internal predecessors, (183), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-17 05:02:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2024-11-17 05:02:40,163 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 63 [2024-11-17 05:02:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:40,163 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2024-11-17 05:02:40,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 05:02:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2024-11-17 05:02:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 05:02:40,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:40,164 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:40,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 05:02:40,164 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_28_to_39_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:40,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -119423055, now seen corresponding path program 1 times [2024-11-17 05:02:40,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404646132] [2024-11-17 05:02:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:40,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:40,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:40,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:40,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:40,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404646132] [2024-11-17 05:02:40,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404646132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:40,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656100286] [2024-11-17 05:02:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:40,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:40,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:40,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:40,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 05:02:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:40,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-17 05:02:40,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:40,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:40,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:40,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:02:40,995 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-17 05:02:40,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-17 05:02:41,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:02:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 05:02:41,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 05:02:41,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656100286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:41,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 05:02:41,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-17 05:02:41,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46560672] [2024-11-17 05:02:41,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:41,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-17 05:02:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-17 05:02:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-17 05:02:41,443 INFO L87 Difference]: Start difference. First operand 195 states and 209 transitions. Second operand has 29 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-17 05:02:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:42,141 INFO L93 Difference]: Finished difference Result 360 states and 382 transitions. [2024-11-17 05:02:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 05:02:42,142 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 63 [2024-11-17 05:02:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:42,144 INFO L225 Difference]: With dead ends: 360 [2024-11-17 05:02:42,144 INFO L226 Difference]: Without dead ends: 357 [2024-11-17 05:02:42,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2024-11-17 05:02:42,145 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 621 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:42,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2011 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:02:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-17 05:02:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 282. [2024-11-17 05:02:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 207 states have (on average 1.4492753623188406) internal successors, (300), 255 states have internal predecessors, (300), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 346 transitions. [2024-11-17 05:02:42,164 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 346 transitions. Word has length 63 [2024-11-17 05:02:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:42,164 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 346 transitions. [2024-11-17 05:02:42,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-17 05:02:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 346 transitions. [2024-11-17 05:02:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-17 05:02:42,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:42,165 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:42,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 05:02:42,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:42,366 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:42,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1457026227, now seen corresponding path program 1 times [2024-11-17 05:02:42,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:42,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976905719] [2024-11-17 05:02:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:42,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:02:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:02:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:02:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-17 05:02:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 05:02:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976905719] [2024-11-17 05:02:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976905719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470283156] [2024-11-17 05:02:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:42,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:42,517 INFO L87 Difference]: Start difference. First operand 282 states and 346 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 05:02:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:42,632 INFO L93 Difference]: Finished difference Result 285 states and 347 transitions. [2024-11-17 05:02:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 05:02:42,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-17 05:02:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:42,634 INFO L225 Difference]: With dead ends: 285 [2024-11-17 05:02:42,634 INFO L226 Difference]: Without dead ends: 283 [2024-11-17 05:02:42,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:42,635 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 62 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:42,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 410 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-17 05:02:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2024-11-17 05:02:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 207 states have (on average 1.4396135265700483) internal successors, (298), 255 states have internal predecessors, (298), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 344 transitions. [2024-11-17 05:02:42,649 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 344 transitions. Word has length 66 [2024-11-17 05:02:42,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:42,649 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 344 transitions. [2024-11-17 05:02:42,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 05:02:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 344 transitions. [2024-11-17 05:02:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-17 05:02:42,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:42,650 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:42,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 05:02:42,650 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:42,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:42,650 INFO L85 PathProgramCache]: Analyzing trace with hash 42868337, now seen corresponding path program 1 times [2024-11-17 05:02:42,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:42,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634692149] [2024-11-17 05:02:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:42,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:42,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005490708] [2024-11-17 05:02:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:42,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:42,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:42,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 05:02:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:42,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 05:02:42,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:42,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:42,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634692149] [2024-11-17 05:02:42,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005490708] [2024-11-17 05:02:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005490708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:42,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:42,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133786712] [2024-11-17 05:02:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:42,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:42,898 INFO L87 Difference]: Start difference. First operand 282 states and 344 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 05:02:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:43,058 INFO L93 Difference]: Finished difference Result 311 states and 370 transitions. [2024-11-17 05:02:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-17 05:02:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:43,060 INFO L225 Difference]: With dead ends: 311 [2024-11-17 05:02:43,060 INFO L226 Difference]: Without dead ends: 309 [2024-11-17 05:02:43,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:43,061 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 100 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:43,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 495 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-17 05:02:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 282. [2024-11-17 05:02:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 207 states have (on average 1.429951690821256) internal successors, (296), 255 states have internal predecessors, (296), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 342 transitions. [2024-11-17 05:02:43,074 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 342 transitions. Word has length 68 [2024-11-17 05:02:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:43,074 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 342 transitions. [2024-11-17 05:02:43,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 05:02:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 342 transitions. [2024-11-17 05:02:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-17 05:02:43,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:43,075 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:43,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:43,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:43,280 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_28_to_39_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:43,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1500867150, now seen corresponding path program 1 times [2024-11-17 05:02:43,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:43,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854587061] [2024-11-17 05:02:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:43,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-17 05:02:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 05:02:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:43,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854587061] [2024-11-17 05:02:43,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854587061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:43,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:43,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064353116] [2024-11-17 05:02:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:43,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:43,385 INFO L87 Difference]: Start difference. First operand 282 states and 342 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:43,475 INFO L93 Difference]: Finished difference Result 282 states and 342 transitions. [2024-11-17 05:02:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2024-11-17 05:02:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:43,477 INFO L225 Difference]: With dead ends: 282 [2024-11-17 05:02:43,477 INFO L226 Difference]: Without dead ends: 281 [2024-11-17 05:02:43,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:43,478 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 57 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:43,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 501 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:43,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-17 05:02:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-17 05:02:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 207 states have (on average 1.4154589371980677) internal successors, (293), 254 states have internal predecessors, (293), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 339 transitions. [2024-11-17 05:02:43,491 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 339 transitions. Word has length 72 [2024-11-17 05:02:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:43,491 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 339 transitions. [2024-11-17 05:02:43,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:43,492 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 339 transitions. [2024-11-17 05:02:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-17 05:02:43,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:43,493 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:43,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 05:02:43,493 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_28_to_39_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:43,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash -717758577, now seen corresponding path program 1 times [2024-11-17 05:02:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:43,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952678812] [2024-11-17 05:02:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:43,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-17 05:02:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 05:02:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952678812] [2024-11-17 05:02:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952678812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:43,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293591784] [2024-11-17 05:02:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:43,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:43,580 INFO L87 Difference]: Start difference. First operand 281 states and 339 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:43,651 INFO L93 Difference]: Finished difference Result 281 states and 339 transitions. [2024-11-17 05:02:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 73 [2024-11-17 05:02:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:43,653 INFO L225 Difference]: With dead ends: 281 [2024-11-17 05:02:43,653 INFO L226 Difference]: Without dead ends: 280 [2024-11-17 05:02:43,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:43,654 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 54 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:43,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 398 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-17 05:02:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-17 05:02:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 207 states have (on average 1.4009661835748792) internal successors, (290), 253 states have internal predecessors, (290), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 336 transitions. [2024-11-17 05:02:43,666 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 336 transitions. Word has length 73 [2024-11-17 05:02:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:43,666 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 336 transitions. [2024-11-17 05:02:43,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 336 transitions. [2024-11-17 05:02:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-17 05:02:43,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:43,667 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:43,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-17 05:02:43,668 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_28_to_39_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:43,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1723743053, now seen corresponding path program 1 times [2024-11-17 05:02:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:43,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408424187] [2024-11-17 05:02:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:43,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-17 05:02:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 05:02:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408424187] [2024-11-17 05:02:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408424187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249287895] [2024-11-17 05:02:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:43,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:43,750 INFO L87 Difference]: Start difference. First operand 280 states and 336 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:43,830 INFO L93 Difference]: Finished difference Result 280 states and 336 transitions. [2024-11-17 05:02:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:43,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2024-11-17 05:02:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:43,832 INFO L225 Difference]: With dead ends: 280 [2024-11-17 05:02:43,832 INFO L226 Difference]: Without dead ends: 279 [2024-11-17 05:02:43,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:43,833 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 47 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:43,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 431 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-17 05:02:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-11-17 05:02:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.3864734299516908) internal successors, (287), 252 states have internal predecessors, (287), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 333 transitions. [2024-11-17 05:02:43,845 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 333 transitions. Word has length 75 [2024-11-17 05:02:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:43,845 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 333 transitions. [2024-11-17 05:02:43,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 333 transitions. [2024-11-17 05:02:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-17 05:02:43,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:43,846 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:43,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-17 05:02:43,848 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:43,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash -417854970, now seen corresponding path program 1 times [2024-11-17 05:02:43,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:43,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200391685] [2024-11-17 05:02:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:43,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:43,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113253000] [2024-11-17 05:02:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:43,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:43,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:43,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:43,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 05:02:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:44,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 05:02:44,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:44,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:44,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-17 05:02:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 05:02:44,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:44,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200391685] [2024-11-17 05:02:44,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113253000] [2024-11-17 05:02:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113253000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:44,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906756932] [2024-11-17 05:02:44,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:44,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:44,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:44,155 INFO L87 Difference]: Start difference. First operand 279 states and 333 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:02:48,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:02:52,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:02:56,293 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] [2024-11-17 05:02:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:56,317 INFO L93 Difference]: Finished difference Result 306 states and 359 transitions. [2024-11-17 05:02:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-11-17 05:02:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:56,319 INFO L225 Difference]: With dead ends: 306 [2024-11-17 05:02:56,320 INFO L226 Difference]: Without dead ends: 305 [2024-11-17 05:02:56,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:56,320 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 130 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:56,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 385 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 5 Unknown, 0 Unchecked, 12.1s Time] [2024-11-17 05:02:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-17 05:02:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 281. [2024-11-17 05:02:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 209 states have (on average 1.3827751196172249) internal successors, (289), 253 states have internal predecessors, (289), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 335 transitions. [2024-11-17 05:02:56,337 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 335 transitions. Word has length 76 [2024-11-17 05:02:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:56,338 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 335 transitions. [2024-11-17 05:02:56,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:02:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 335 transitions. [2024-11-17 05:02:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-17 05:02:56,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:56,339 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:56,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:56,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-17 05:02:56,543 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_28_to_39_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:56,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1896427115, now seen corresponding path program 1 times [2024-11-17 05:02:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935568654] [2024-11-17 05:02:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:02:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:02:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:02:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-17 05:02:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 05:02:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935568654] [2024-11-17 05:02:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935568654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:56,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:56,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859597250] [2024-11-17 05:02:56,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:56,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:56,647 INFO L87 Difference]: Start difference. First operand 281 states and 335 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:56,730 INFO L93 Difference]: Finished difference Result 281 states and 335 transitions. [2024-11-17 05:02:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:56,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2024-11-17 05:02:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:56,731 INFO L225 Difference]: With dead ends: 281 [2024-11-17 05:02:56,731 INFO L226 Difference]: Without dead ends: 280 [2024-11-17 05:02:56,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:56,732 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 44 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:56,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 497 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-17 05:02:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-17 05:02:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 209 states have (on average 1.368421052631579) internal successors, (286), 252 states have internal predecessors, (286), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 332 transitions. [2024-11-17 05:02:56,745 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 332 transitions. Word has length 76 [2024-11-17 05:02:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:56,745 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 332 transitions. [2024-11-17 05:02:56,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:02:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 332 transitions. [2024-11-17 05:02:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-17 05:02:56,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:56,746 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:56,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-17 05:02:56,747 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:56,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash -68602108, now seen corresponding path program 1 times [2024-11-17 05:02:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:56,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947940266] [2024-11-17 05:02:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781046527] [2024-11-17 05:02:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:56,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:56,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:56,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:56,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 05:02:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 05:02:56,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:56,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 05:02:57,017 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:57,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:57,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947940266] [2024-11-17 05:02:57,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:57,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781046527] [2024-11-17 05:02:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781046527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:57,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:57,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177819438] [2024-11-17 05:02:57,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:57,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:57,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:57,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:57,019 INFO L87 Difference]: Start difference. First operand 280 states and 332 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:02:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:57,154 INFO L93 Difference]: Finished difference Result 304 states and 355 transitions. [2024-11-17 05:02:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-17 05:02:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:57,156 INFO L225 Difference]: With dead ends: 304 [2024-11-17 05:02:57,156 INFO L226 Difference]: Without dead ends: 303 [2024-11-17 05:02:57,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:57,157 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 126 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:57,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 384 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-17 05:02:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 281. [2024-11-17 05:02:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 210 states have (on average 1.3666666666666667) internal successors, (287), 253 states have internal predecessors, (287), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-17 05:02:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 333 transitions. [2024-11-17 05:02:57,170 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 333 transitions. Word has length 77 [2024-11-17 05:02:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:57,171 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 333 transitions. [2024-11-17 05:02:57,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:02:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 333 transitions. [2024-11-17 05:02:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-17 05:02:57,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:57,172 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:57,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 05:02:57,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-17 05:02:57,376 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_28_to_39_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:02:57,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1340301557, now seen corresponding path program 1 times [2024-11-17 05:02:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192905605] [2024-11-17 05:02:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:57,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442000721] [2024-11-17 05:02:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:57,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:57,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 05:02:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:57,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 05:02:57,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:57,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:57,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:02:57,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-17 05:02:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:02:57,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:03:01,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192905605] [2024-11-17 05:03:01,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:03:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442000721] [2024-11-17 05:03:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442000721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:03:01,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:03:01,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-17 05:03:01,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818609593] [2024-11-17 05:03:01,890 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:03:01,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 05:03:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 05:03:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=160, Unknown=1, NotChecked=0, Total=210 [2024-11-17 05:03:01,891 INFO L87 Difference]: Start difference. First operand 281 states and 333 transitions. Second operand has 12 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:03:05,898 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] [2024-11-17 05:03:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:06,340 INFO L93 Difference]: Finished difference Result 305 states and 357 transitions. [2024-11-17 05:03:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 05:03:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 77 [2024-11-17 05:03:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:06,342 INFO L225 Difference]: With dead ends: 305 [2024-11-17 05:03:06,342 INFO L226 Difference]: Without dead ends: 304 [2024-11-17 05:03:06,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=128, Invalid=333, Unknown=1, NotChecked=0, Total=462 [2024-11-17 05:03:06,343 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 338 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:06,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1029 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-17 05:03:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-17 05:03:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 282. [2024-11-17 05:03:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 211 states have (on average 1.3507109004739337) internal successors, (285), 253 states have internal predecessors, (285), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-17 05:03:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 333 transitions. [2024-11-17 05:03:06,355 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 333 transitions. Word has length 77 [2024-11-17 05:03:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:06,356 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 333 transitions. [2024-11-17 05:03:06,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:03:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 333 transitions. [2024-11-17 05:03:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-17 05:03:06,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:06,357 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:06,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 05:03:06,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-17 05:03:06,557 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_28_to_39_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:06,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1400324713, now seen corresponding path program 1 times [2024-11-17 05:03:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:06,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948358215] [2024-11-17 05:03:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:03:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092100473] [2024-11-17 05:03:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:06,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:06,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:03:06,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:03:06,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 05:03:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:06,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 05:03:06,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:03:06,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:03:06,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 05:03:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:03:06,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:03:07,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948358215] [2024-11-17 05:03:07,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:03:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092100473] [2024-11-17 05:03:07,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092100473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:03:07,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:03:07,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-17 05:03:07,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058657238] [2024-11-17 05:03:07,009 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:03:07,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 05:03:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 05:03:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-17 05:03:07,010 INFO L87 Difference]: Start difference. First operand 282 states and 333 transitions. Second operand has 12 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:03:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:07,309 INFO L93 Difference]: Finished difference Result 373 states and 410 transitions. [2024-11-17 05:03:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 05:03:07,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2024-11-17 05:03:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:07,311 INFO L225 Difference]: With dead ends: 373 [2024-11-17 05:03:07,311 INFO L226 Difference]: Without dead ends: 372 [2024-11-17 05:03:07,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-17 05:03:07,312 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 266 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:07,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1112 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:03:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-17 05:03:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 301. [2024-11-17 05:03:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 227 states have (on average 1.3656387665198237) internal successors, (310), 269 states have internal predecessors, (310), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 362 transitions. [2024-11-17 05:03:07,331 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 362 transitions. Word has length 78 [2024-11-17 05:03:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:07,331 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 362 transitions. [2024-11-17 05:03:07,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 05:03:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 362 transitions. [2024-11-17 05:03:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-17 05:03:07,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:07,333 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:07,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 05:03:07,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-17 05:03:07,533 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:07,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1502114014, now seen corresponding path program 1 times [2024-11-17 05:03:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:07,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906477270] [2024-11-17 05:03:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:03:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:03:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:03:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:03:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-17 05:03:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-17 05:03:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 05:03:07,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906477270] [2024-11-17 05:03:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906477270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:03:07,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:03:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:03:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322806870] [2024-11-17 05:03:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:03:07,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:03:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:03:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:03:07,675 INFO L87 Difference]: Start difference. First operand 301 states and 362 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:07,830 INFO L93 Difference]: Finished difference Result 317 states and 383 transitions. [2024-11-17 05:03:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:03:07,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2024-11-17 05:03:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:07,832 INFO L225 Difference]: With dead ends: 317 [2024-11-17 05:03:07,832 INFO L226 Difference]: Without dead ends: 315 [2024-11-17 05:03:07,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:03:07,833 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 96 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:07,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 315 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:03:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-17 05:03:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 304. [2024-11-17 05:03:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 230 states have (on average 1.3608695652173912) internal successors, (313), 272 states have internal predecessors, (313), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 365 transitions. [2024-11-17 05:03:07,846 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 365 transitions. Word has length 79 [2024-11-17 05:03:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:07,846 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 365 transitions. [2024-11-17 05:03:07,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 365 transitions. [2024-11-17 05:03:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-17 05:03:07,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:07,847 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:07,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-17 05:03:07,847 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:07,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash -422553792, now seen corresponding path program 1 times [2024-11-17 05:03:07,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:07,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000438600] [2024-11-17 05:03:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:07,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:03:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307990077] [2024-11-17 05:03:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:07,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:03:07,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:03:07,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 05:03:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:07,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 05:03:07,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:03:07,995 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 [2024-11-17 05:03:07,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:03:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 05:03:08,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:03:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000438600] [2024-11-17 05:03:08,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:03:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307990077] [2024-11-17 05:03:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307990077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:03:08,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:03:08,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:03:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432271753] [2024-11-17 05:03:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:03:08,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:03:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:03:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:03:08,267 INFO L87 Difference]: Start difference. First operand 304 states and 365 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:08,457 INFO L93 Difference]: Finished difference Result 321 states and 381 transitions. [2024-11-17 05:03:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:03:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-11-17 05:03:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:08,459 INFO L225 Difference]: With dead ends: 321 [2024-11-17 05:03:08,459 INFO L226 Difference]: Without dead ends: 319 [2024-11-17 05:03:08,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:03:08,460 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 103 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:08,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 488 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 213 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:03:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-17 05:03:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 306. [2024-11-17 05:03:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 232 states have (on average 1.3577586206896552) internal successors, (315), 274 states have internal predecessors, (315), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 367 transitions. [2024-11-17 05:03:08,473 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 367 transitions. Word has length 81 [2024-11-17 05:03:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:08,473 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 367 transitions. [2024-11-17 05:03:08,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 367 transitions. [2024-11-17 05:03:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-17 05:03:08,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:08,474 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:08,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 05:03:08,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:08,679 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:08,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash 249191615, now seen corresponding path program 1 times [2024-11-17 05:03:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:08,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422632752] [2024-11-17 05:03:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:08,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:03:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:03:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:03:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:03:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-17 05:03:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-17 05:03:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 05:03:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:08,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422632752] [2024-11-17 05:03:08,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422632752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:03:08,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:03:08,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:03:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035702902] [2024-11-17 05:03:08,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:03:08,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:03:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:08,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:03:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:03:08,821 INFO L87 Difference]: Start difference. First operand 306 states and 367 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:08,954 INFO L93 Difference]: Finished difference Result 315 states and 379 transitions. [2024-11-17 05:03:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:03:08,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 84 [2024-11-17 05:03:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:08,956 INFO L225 Difference]: With dead ends: 315 [2024-11-17 05:03:08,956 INFO L226 Difference]: Without dead ends: 313 [2024-11-17 05:03:08,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:03:08,957 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 63 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:08,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 371 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:03:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-17 05:03:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2024-11-17 05:03:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 235 states have (on average 1.353191489361702) internal successors, (318), 277 states have internal predecessors, (318), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2024-11-17 05:03:08,973 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 84 [2024-11-17 05:03:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:08,973 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2024-11-17 05:03:08,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2024-11-17 05:03:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-17 05:03:08,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:08,974 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:08,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-17 05:03:08,974 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_28_to_39_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:08,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:08,975 INFO L85 PathProgramCache]: Analyzing trace with hash -114996528, now seen corresponding path program 1 times [2024-11-17 05:03:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:08,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969384209] [2024-11-17 05:03:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:08,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:03:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665059369] [2024-11-17 05:03:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:09,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:03:09,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:03:09,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 05:03:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:09,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 05:03:09,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:03:09,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:03:09,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:03:09,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:03:09,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-17 05:03:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 05:03:09,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:03:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969384209] [2024-11-17 05:03:09,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:03:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665059369] [2024-11-17 05:03:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665059369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:03:09,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:03:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-17 05:03:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330755066] [2024-11-17 05:03:09,592 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:03:09,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 05:03:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 05:03:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-17 05:03:09,593 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand has 17 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-17 05:03:13,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:03:17,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:03:21,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:03:26,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:03:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:26,203 INFO L93 Difference]: Finished difference Result 325 states and 383 transitions. [2024-11-17 05:03:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 05:03:26,203 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 85 [2024-11-17 05:03:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:26,205 INFO L225 Difference]: With dead ends: 325 [2024-11-17 05:03:26,205 INFO L226 Difference]: Without dead ends: 324 [2024-11-17 05:03:26,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2024-11-17 05:03:26,206 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 373 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 37 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:26,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1460 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 692 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2024-11-17 05:03:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-17 05:03:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 316. [2024-11-17 05:03:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 241 states have (on average 1.3319502074688796) internal successors, (321), 282 states have internal predecessors, (321), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 373 transitions. [2024-11-17 05:03:26,221 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 373 transitions. Word has length 85 [2024-11-17 05:03:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:26,222 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 373 transitions. [2024-11-17 05:03:26,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-17 05:03:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 373 transitions. [2024-11-17 05:03:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-17 05:03:26,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:26,223 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:26,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 05:03:26,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-17 05:03:26,424 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_28_to_39_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:26,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash 730074942, now seen corresponding path program 1 times [2024-11-17 05:03:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:26,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42916353] [2024-11-17 05:03:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:26,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:03:26,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727429184] [2024-11-17 05:03:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:26,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:26,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:03:26,457 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:03:26,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 05:03:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:26,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-17 05:03:26,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:03:26,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:03:26,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:03:27,253 INFO L349 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2024-11-17 05:03:27,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 41 [2024-11-17 05:03:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 05:03:27,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:03:27,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:27,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42916353] [2024-11-17 05:03:27,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:03:27,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727429184] [2024-11-17 05:03:27,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727429184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:03:27,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:03:27,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-17 05:03:27,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205396027] [2024-11-17 05:03:27,661 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:03:27,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 05:03:27,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 05:03:27,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-17 05:03:27,662 INFO L87 Difference]: Start difference. First operand 316 states and 373 transitions. Second operand has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 20 states have internal predecessors, (74), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-17 05:03:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:28,740 INFO L93 Difference]: Finished difference Result 374 states and 406 transitions. [2024-11-17 05:03:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 05:03:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 20 states have internal predecessors, (74), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 86 [2024-11-17 05:03:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:28,742 INFO L225 Difference]: With dead ends: 374 [2024-11-17 05:03:28,742 INFO L226 Difference]: Without dead ends: 373 [2024-11-17 05:03:28,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=221, Invalid=1501, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 05:03:28,743 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 320 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:28,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1669 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 05:03:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-17 05:03:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 316. [2024-11-17 05:03:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 241 states have (on average 1.3278008298755186) internal successors, (320), 282 states have internal predecessors, (320), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 372 transitions. [2024-11-17 05:03:28,758 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 372 transitions. Word has length 86 [2024-11-17 05:03:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:28,758 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 372 transitions. [2024-11-17 05:03:28,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 20 states have internal predecessors, (74), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-17 05:03:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 372 transitions. [2024-11-17 05:03:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-17 05:03:28,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:28,760 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:28,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 05:03:28,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:28,961 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:28,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1045024643, now seen corresponding path program 1 times [2024-11-17 05:03:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856804222] [2024-11-17 05:03:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:28,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:03:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:03:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:03:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:03:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-17 05:03:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-17 05:03:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 05:03:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856804222] [2024-11-17 05:03:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856804222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:03:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:03:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:03:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784440032] [2024-11-17 05:03:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:03:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:03:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:03:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:03:29,132 INFO L87 Difference]: Start difference. First operand 316 states and 372 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:29,352 INFO L93 Difference]: Finished difference Result 322 states and 379 transitions. [2024-11-17 05:03:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:03:29,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2024-11-17 05:03:29,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:29,354 INFO L225 Difference]: With dead ends: 322 [2024-11-17 05:03:29,354 INFO L226 Difference]: Without dead ends: 320 [2024-11-17 05:03:29,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:03:29,355 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 60 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:29,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 372 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:03:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-17 05:03:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2024-11-17 05:03:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 244 states have (on average 1.3278688524590163) internal successors, (324), 285 states have internal predecessors, (324), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-17 05:03:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 376 transitions. [2024-11-17 05:03:29,376 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 376 transitions. Word has length 86 [2024-11-17 05:03:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:29,376 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 376 transitions. [2024-11-17 05:03:29,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 376 transitions. [2024-11-17 05:03:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-17 05:03:29,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:29,377 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:29,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-17 05:03:29,378 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:29,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1963974491, now seen corresponding path program 1 times [2024-11-17 05:03:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183374024] [2024-11-17 05:03:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:03:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-17 05:03:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 05:03:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 05:03:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-17 05:03:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-17 05:03:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 05:03:29,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183374024] [2024-11-17 05:03:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183374024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:03:29,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:03:29,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:03:29,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427085412] [2024-11-17 05:03:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:03:29,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:03:29,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:29,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:03:29,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:03:29,810 INFO L87 Difference]: Start difference. First operand 319 states and 376 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:03:30,430 INFO L93 Difference]: Finished difference Result 322 states and 377 transitions. [2024-11-17 05:03:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:03:30,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 87 [2024-11-17 05:03:30,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:03:30,432 INFO L225 Difference]: With dead ends: 322 [2024-11-17 05:03:30,432 INFO L226 Difference]: Without dead ends: 288 [2024-11-17 05:03:30,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:03:30,432 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 60 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 05:03:30,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 491 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 05:03:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-17 05:03:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-17 05:03:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 216 states have (on average 1.3611111111111112) internal successors, (294), 257 states have internal predecessors, (294), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-17 05:03:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 341 transitions. [2024-11-17 05:03:30,448 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 341 transitions. Word has length 87 [2024-11-17 05:03:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:03:30,448 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 341 transitions. [2024-11-17 05:03:30,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 05:03:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 341 transitions. [2024-11-17 05:03:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-17 05:03:30,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:03:30,449 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:03:30,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-17 05:03:30,450 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_28_to_39_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-17 05:03:30,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:03:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1522350428, now seen corresponding path program 1 times [2024-11-17 05:03:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:03:30,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830526880] [2024-11-17 05:03:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:03:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:30,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 05:03:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:30,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 05:03:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:30,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-17 05:03:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:30,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-17 05:03:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:30,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-17 05:03:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 05:03:30,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:03:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830526880] [2024-11-17 05:03:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830526880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:03:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080620066] [2024-11-17 05:03:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:03:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:03:30,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:03:30,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:03:30,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 05:03:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:03:31,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-17 05:03:31,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:03:31,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:03:31,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:03:31,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:03:31,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:03:31,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:03:31,789 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-17 05:03:31,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-17 05:03:32,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:03:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 05:03:32,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:03:32,400 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 22 [2024-11-17 05:03:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-17 05:03:32,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080620066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:03:32,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 05:03:32,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 13] total 35 [2024-11-17 05:03:32,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100454157] [2024-11-17 05:03:32,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 05:03:32,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-17 05:03:32,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:03:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-17 05:03:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2024-11-17 05:03:32,476 INFO L87 Difference]: Start difference. First operand 288 states and 341 transitions. Second operand has 36 states, 32 states have (on average 5.625) internal successors, (180), 30 states have internal predecessors, (180), 10 states have call successors, (20), 9 states have call predecessors, (20), 6 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-17 05:03:36,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:03:40,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]