./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.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_ps4.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 e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 05:01:35,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 05:01:35,231 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 05:01:35,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 05:01:35,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 05:01:35,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 05:01:35,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 05:01:35,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 05:01:35,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 05:01:35,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 05:01:35,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 05:01:35,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 05:01:35,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 05:01:35,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 05:01:35,275 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 05:01:35,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 05:01:35,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 05:01:35,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 05:01:35,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 05:01:35,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 05:01:35,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 05:01:35,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 05:01:35,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 05:01:35,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 05:01:35,279 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 05:01:35,279 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 05:01:35,280 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 05:01:35,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 05:01:35,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 05:01:35,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 05:01:35,281 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 05:01:35,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 05:01:35,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 05:01:35,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 05:01:35,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 05:01:35,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 05:01:35,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 05:01:35,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 05:01:35,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 05:01:35,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 05:01:35,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 05:01:35,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 05:01:35,286 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 05:01:35,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 05:01:35,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 [2024-11-17 05:01:35,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 05:01:35,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 05:01:35,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 05:01:35,600 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 05:01:35,601 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 05:01:35,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2024-11-17 05:01:37,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 05:01:37,281 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 05:01:37,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2024-11-17 05:01:37,289 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81107899/5609474e848340afab2b25057102e0eb/FLAGdd9510147 [2024-11-17 05:01:37,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81107899/5609474e848340afab2b25057102e0eb [2024-11-17 05:01:37,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 05:01:37,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 05:01:37,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 05:01:37,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 05:01:37,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 05:01:37,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26209cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37, skipping insertion in model container [2024-11-17 05:01:37,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 05:01:37,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 05:01:37,571 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 05:01:37,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 05:01:37,622 INFO L204 MainTranslator]: Completed translation [2024-11-17 05:01:37,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37 WrapperNode [2024-11-17 05:01:37,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 05:01:37,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 05:01:37,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 05:01:37,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 05:01:37,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,676 INFO L138 Inliner]: procedures = 16, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2024-11-17 05:01:37,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 05:01:37,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 05:01:37,681 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 05:01:37,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 05:01:37,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,718 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 6, 3, 27, 5, 4]. 57 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 1, 2, 2, 2]. [2024-11-17 05:01:37,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,729 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 05:01:37,743 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 05:01:37,743 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 05:01:37,743 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 05:01:37,745 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (1/1) ... [2024-11-17 05:01:37,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 05:01:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:37,786 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 05:01:37,789 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 05:01:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 05:01:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-17 05:01:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-17 05:01:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 05:01:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 05:01:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 05:01:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 05:01:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 05:01:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 05:01:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 05:01:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 05:01:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 05:01:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 05:01:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 05:01:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 05:01:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 05:01:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 05:01:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 05:01:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 05:01:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 05:01:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 05:01:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 05:01:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 05:01:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 05:01:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-17 05:01:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-17 05:01:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 05:01:37,977 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 05:01:37,981 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 05:01:38,992 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2024-11-17 05:01:39,018 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-11-17 05:01:39,018 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 05:01:39,034 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 05:01:39,035 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 05:01:39,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 05:01:39 BoogieIcfgContainer [2024-11-17 05:01:39,035 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 05:01:39,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 05:01:39,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 05:01:39,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 05:01:39,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 05:01:37" (1/3) ... [2024-11-17 05:01:39,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a51f3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:01:39, skipping insertion in model container [2024-11-17 05:01:39,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:37" (2/3) ... [2024-11-17 05:01:39,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a51f3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:01:39, skipping insertion in model container [2024-11-17 05:01:39,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 05:01:39" (3/3) ... [2024-11-17 05:01:39,043 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4.c [2024-11-17 05:01:39,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 05:01:39,060 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-17 05:01:39,134 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 05:01:39,142 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;@691a1425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 05:01:39,143 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-17 05:01:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 158 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 05:01:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 05:01:39,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:39,156 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 05:01:39,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:39,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1354950403, now seen corresponding path program 1 times [2024-11-17 05:01:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701455850] [2024-11-17 05:01:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:39,723 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 05:01:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:39,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701455850] [2024-11-17 05:01:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701455850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141360530] [2024-11-17 05:01:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:39,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:39,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:39,759 INFO L87 Difference]: Start difference. First operand has 165 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 158 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 05:01:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:40,074 INFO L93 Difference]: Finished difference Result 423 states and 445 transitions. [2024-11-17 05:01:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:40,078 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 05:01:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:40,104 INFO L225 Difference]: With dead ends: 423 [2024-11-17 05:01:40,105 INFO L226 Difference]: Without dead ends: 255 [2024-11-17 05:01:40,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:40,116 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 214 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:40,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 742 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-17 05:01:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 194. [2024-11-17 05:01:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.6428571428571428) internal successors, (207), 186 states have internal predecessors, (207), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 218 transitions. [2024-11-17 05:01:40,193 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 218 transitions. Word has length 6 [2024-11-17 05:01:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:40,194 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 218 transitions. [2024-11-17 05:01:40,195 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 05:01:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 218 transitions. [2024-11-17 05:01:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 05:01:40,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:40,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:40,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 05:01:40,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:40,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1224856588, now seen corresponding path program 1 times [2024-11-17 05:01:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:40,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123988238] [2024-11-17 05:01:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:40,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120464260] [2024-11-17 05:01:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:40,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:40,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:40,245 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 05:01:40,247 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 05:01:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:40,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 05:01:40,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:40,415 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 05:01:40,471 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 05:01:40,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:40,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:40,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123988238] [2024-11-17 05:01:40,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:40,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120464260] [2024-11-17 05:01:40,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120464260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:40,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:40,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584210795] [2024-11-17 05:01:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:40,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:40,479 INFO L87 Difference]: Start difference. First operand 194 states and 218 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (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 05:01:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:40,846 INFO L93 Difference]: Finished difference Result 283 states and 288 transitions. [2024-11-17 05:01:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (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 9 [2024-11-17 05:01:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:40,851 INFO L225 Difference]: With dead ends: 283 [2024-11-17 05:01:40,853 INFO L226 Difference]: Without dead ends: 277 [2024-11-17 05:01:40,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 05:01:40,854 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 203 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:40,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 626 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-17 05:01:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 194. [2024-11-17 05:01:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.5952380952380953) internal successors, (201), 186 states have internal predecessors, (201), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 212 transitions. [2024-11-17 05:01:40,884 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 212 transitions. Word has length 9 [2024-11-17 05:01:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:40,885 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 212 transitions. [2024-11-17 05:01:40,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (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 05:01:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 212 transitions. [2024-11-17 05:01:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 05:01:40,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:40,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:40,903 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 05:01:41,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:41,087 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:41,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1555089893, now seen corresponding path program 1 times [2024-11-17 05:01:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749333925] [2024-11-17 05:01:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:41,459 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 05:01:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749333925] [2024-11-17 05:01:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749333925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:41,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829769821] [2024-11-17 05:01:41,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:41,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:41,462 INFO L87 Difference]: Start difference. First operand 194 states and 212 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 05:01:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:41,973 INFO L93 Difference]: Finished difference Result 249 states and 254 transitions. [2024-11-17 05:01:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 17 [2024-11-17 05:01:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:41,975 INFO L225 Difference]: With dead ends: 249 [2024-11-17 05:01:41,975 INFO L226 Difference]: Without dead ends: 248 [2024-11-17 05:01:41,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:41,976 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 209 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:41,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 711 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:01:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-17 05:01:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 194. [2024-11-17 05:01:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.5873015873015872) internal successors, (200), 186 states have internal predecessors, (200), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 211 transitions. [2024-11-17 05:01:41,992 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 211 transitions. Word has length 17 [2024-11-17 05:01:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:41,993 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 211 transitions. [2024-11-17 05:01:41,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 05:01:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 211 transitions. [2024-11-17 05:01:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 05:01:41,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:41,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:41,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 05:01:41,994 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 963146457, now seen corresponding path program 1 times [2024-11-17 05:01:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589624598] [2024-11-17 05:01:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269507956] [2024-11-17 05:01:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:42,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:42,031 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 05:01:42,035 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 05:01:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:42,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 05:01:42,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:42,138 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 05:01:42,251 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 05:01:42,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589624598] [2024-11-17 05:01:42,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269507956] [2024-11-17 05:01:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269507956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:42,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:42,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220870258] [2024-11-17 05:01:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:42,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:42,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:42,255 INFO L87 Difference]: Start difference. First operand 194 states and 211 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 05:01:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:42,639 INFO L93 Difference]: Finished difference Result 276 states and 281 transitions. [2024-11-17 05:01:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 18 [2024-11-17 05:01:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:42,642 INFO L225 Difference]: With dead ends: 276 [2024-11-17 05:01:42,642 INFO L226 Difference]: Without dead ends: 275 [2024-11-17 05:01:42,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 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 05:01:42,645 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 190 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:42,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 741 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-17 05:01:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 194. [2024-11-17 05:01:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 186 states have internal predecessors, (199), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 210 transitions. [2024-11-17 05:01:42,664 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 210 transitions. Word has length 18 [2024-11-17 05:01:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:42,664 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 210 transitions. [2024-11-17 05:01:42,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 05:01:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 210 transitions. [2024-11-17 05:01:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-17 05:01:42,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:42,665 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] [2024-11-17 05:01:42,690 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 05:01:42,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-17 05:01:42,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:42,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2129189833, now seen corresponding path program 1 times [2024-11-17 05:01:42,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:42,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824279730] [2024-11-17 05:01:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:42,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:43,012 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 05:01:43,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:43,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824279730] [2024-11-17 05:01:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824279730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444934058] [2024-11-17 05:01:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:43,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:43,017 INFO L87 Difference]: Start difference. First operand 194 states and 210 transitions. Second operand has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 05:01:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:43,267 INFO L93 Difference]: Finished difference Result 275 states and 280 transitions. [2024-11-17 05:01:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-17 05:01:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:43,270 INFO L225 Difference]: With dead ends: 275 [2024-11-17 05:01:43,270 INFO L226 Difference]: Without dead ends: 269 [2024-11-17 05:01:43,270 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 05:01:43,275 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 159 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 635 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 05:01:43,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 635 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:43,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-17 05:01:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 194. [2024-11-17 05:01:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 186 states have internal predecessors, (193), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 204 transitions. [2024-11-17 05:01:43,284 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 204 transitions. Word has length 20 [2024-11-17 05:01:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:43,285 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 204 transitions. [2024-11-17 05:01:43,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 05:01:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 204 transitions. [2024-11-17 05:01:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-17 05:01:43,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:43,286 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:43,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 05:01:43,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:43,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash 900154768, now seen corresponding path program 1 times [2024-11-17 05:01:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542523713] [2024-11-17 05:01:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964190628] [2024-11-17 05:01:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:43,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:43,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:43,313 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 05:01:43,315 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 05:01:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:43,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-17 05:01:43,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:43,408 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 05:01:43,416 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 05:01:43,656 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 05:01:43,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542523713] [2024-11-17 05:01:43,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964190628] [2024-11-17 05:01:43,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964190628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:43,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:43,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177808836] [2024-11-17 05:01:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:43,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:43,659 INFO L87 Difference]: Start difference. First operand 194 states and 204 transitions. Second operand has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 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 05:01:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:44,127 INFO L93 Difference]: Finished difference Result 226 states and 231 transitions. [2024-11-17 05:01:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:44,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 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 28 [2024-11-17 05:01:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:44,130 INFO L225 Difference]: With dead ends: 226 [2024-11-17 05:01:44,130 INFO L226 Difference]: Without dead ends: 224 [2024-11-17 05:01:44,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:44,131 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 130 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:44,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 853 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:01:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-17 05:01:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 194. [2024-11-17 05:01:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 186 states have internal predecessors, (191), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2024-11-17 05:01:44,145 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 28 [2024-11-17 05:01:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:44,145 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2024-11-17 05:01:44,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 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 05:01:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2024-11-17 05:01:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-17 05:01:44,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:44,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:44,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 05:01:44,346 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 05:01:44,347 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:44,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1265091847, now seen corresponding path program 1 times [2024-11-17 05:01:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824845486] [2024-11-17 05:01:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:44,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885233685] [2024-11-17 05:01:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:44,370 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 05:01:44,371 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 05:01:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:44,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 05:01:44,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:44,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:01:44,536 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 05:01:44,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824845486] [2024-11-17 05:01:44,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885233685] [2024-11-17 05:01:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885233685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:44,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:44,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:44,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027697697] [2024-11-17 05:01:44,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:44,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:44,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:44,540 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 05:01:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:44,691 INFO L93 Difference]: Finished difference Result 267 states and 272 transitions. [2024-11-17 05:01:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:44,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 31 [2024-11-17 05:01:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:44,694 INFO L225 Difference]: With dead ends: 267 [2024-11-17 05:01:44,694 INFO L226 Difference]: Without dead ends: 265 [2024-11-17 05:01:44,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 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 05:01:44,695 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 127 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:44,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 660 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:01:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-17 05:01:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 194. [2024-11-17 05:01:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.5) internal successors, (189), 186 states have internal predecessors, (189), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 200 transitions. [2024-11-17 05:01:44,702 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 200 transitions. Word has length 31 [2024-11-17 05:01:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:44,702 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 200 transitions. [2024-11-17 05:01:44,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 05:01:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 200 transitions. [2024-11-17 05:01:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 05:01:44,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:44,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:44,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 05:01:44,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:44,908 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:44,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash -277520009, now seen corresponding path program 1 times [2024-11-17 05:01:44,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661667572] [2024-11-17 05:01:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398302374] [2024-11-17 05:01:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:44,943 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 05:01:44,944 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 05:01:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:45,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 05:01:45,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:45,029 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 05:01:45,262 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 05:01:45,262 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661667572] [2024-11-17 05:01:45,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398302374] [2024-11-17 05:01:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398302374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:45,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:45,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:45,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911768437] [2024-11-17 05:01:45,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:45,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:45,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:45,264 INFO L87 Difference]: Start difference. First operand 194 states and 200 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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 05:01:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:45,830 INFO L93 Difference]: Finished difference Result 265 states and 270 transitions. [2024-11-17 05:01:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:45,833 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), 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 33 [2024-11-17 05:01:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:45,834 INFO L225 Difference]: With dead ends: 265 [2024-11-17 05:01:45,834 INFO L226 Difference]: Without dead ends: 264 [2024-11-17 05:01:45,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:45,835 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 128 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:45,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 731 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:01:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-17 05:01:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 194. [2024-11-17 05:01:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.492063492063492) internal successors, (188), 186 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2024-11-17 05:01:45,844 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 33 [2024-11-17 05:01:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:45,844 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 199 transitions. [2024-11-17 05:01:45,844 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), 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 05:01:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 199 transitions. [2024-11-17 05:01:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-17 05:01:45,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:45,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:45,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 05:01:46,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:46,046 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:46,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash -13185685, now seen corresponding path program 1 times [2024-11-17 05:01:46,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:46,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164355827] [2024-11-17 05:01:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:46,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440998838] [2024-11-17 05:01:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:46,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:46,068 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 05:01:46,070 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 05:01:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:46,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 05:01:46,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:46,161 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 05:01:46,328 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 05:01:46,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:46,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164355827] [2024-11-17 05:01:46,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440998838] [2024-11-17 05:01:46,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440998838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:46,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:46,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:46,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325434329] [2024-11-17 05:01:46,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:46,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:46,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:46,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:46,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:46,331 INFO L87 Difference]: Start difference. First operand 194 states and 199 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 05:01:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:46,779 INFO L93 Difference]: Finished difference Result 264 states and 269 transitions. [2024-11-17 05:01:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 34 [2024-11-17 05:01:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:46,781 INFO L225 Difference]: With dead ends: 264 [2024-11-17 05:01:46,781 INFO L226 Difference]: Without dead ends: 263 [2024-11-17 05:01:46,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:46,782 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 125 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:46,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 735 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:01:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-17 05:01:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 194. [2024-11-17 05:01:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 126 states have (on average 1.4841269841269842) internal successors, (187), 186 states have internal predecessors, (187), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2024-11-17 05:01:46,791 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 34 [2024-11-17 05:01:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:46,792 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2024-11-17 05:01:46,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 05:01:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2024-11-17 05:01:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-17 05:01:46,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:46,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:46,813 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 05:01:46,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:47,000 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:47,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:47,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1529091178, now seen corresponding path program 1 times [2024-11-17 05:01:47,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:47,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716638560] [2024-11-17 05:01:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:47,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:47,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 05:01:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:47,293 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 05:01:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716638560] [2024-11-17 05:01:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716638560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215735509] [2024-11-17 05:01:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:47,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:47,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:47,297 INFO L87 Difference]: Start difference. First operand 194 states and 198 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:47,378 INFO L93 Difference]: Finished difference Result 266 states and 270 transitions. [2024-11-17 05:01:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:47,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-17 05:01:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:47,380 INFO L225 Difference]: With dead ends: 266 [2024-11-17 05:01:47,380 INFO L226 Difference]: Without dead ends: 265 [2024-11-17 05:01:47,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:47,381 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 111 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:47,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 777 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:01:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-17 05:01:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 195. [2024-11-17 05:01:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 187 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 199 transitions. [2024-11-17 05:01:47,390 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 199 transitions. Word has length 42 [2024-11-17 05:01:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:47,390 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 199 transitions. [2024-11-17 05:01:47,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 199 transitions. [2024-11-17 05:01:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 05:01:47,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:47,394 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, 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 05:01:47,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 05:01:47,394 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:47,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash -157186270, now seen corresponding path program 1 times [2024-11-17 05:01:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:47,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679062899] [2024-11-17 05:01:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:47,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:47,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 05:01:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:47,605 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 05:01:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679062899] [2024-11-17 05:01:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679062899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:47,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719777395] [2024-11-17 05:01:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:47,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:47,609 INFO L87 Difference]: Start difference. First operand 195 states and 199 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:47,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:47,689 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2024-11-17 05:01:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:47,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-11-17 05:01:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:47,692 INFO L225 Difference]: With dead ends: 195 [2024-11-17 05:01:47,693 INFO L226 Difference]: Without dead ends: 194 [2024-11-17 05:01:47,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:47,694 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 132 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:47,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 724 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 05:01:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-17 05:01:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-17 05:01:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 127 states have (on average 1.4724409448818898) internal successors, (187), 186 states have internal predecessors, (187), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2024-11-17 05:01:47,703 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 43 [2024-11-17 05:01:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:47,704 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2024-11-17 05:01:47,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2024-11-17 05:01:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 05:01:47,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:47,705 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, 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 05:01:47,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 05:01:47,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:47,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -731996100, now seen corresponding path program 1 times [2024-11-17 05:01:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:47,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783289739] [2024-11-17 05:01:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312406015] [2024-11-17 05:01:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:47,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:47,732 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 05:01:47,734 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 05:01:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:47,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 05:01:47,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:47,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:01:47,839 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 05:01:47,841 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 05:01:48,378 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 05:01:48,389 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 05:01:48,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783289739] [2024-11-17 05:01:48,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312406015] [2024-11-17 05:01:48,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312406015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:48,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:48,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:01:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962943445] [2024-11-17 05:01:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:48,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:01:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:01:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:01:48,391 INFO L87 Difference]: Start difference. First operand 194 states and 198 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:48,686 INFO L93 Difference]: Finished difference Result 255 states and 260 transitions. [2024-11-17 05:01:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:01:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-17 05:01:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:48,688 INFO L225 Difference]: With dead ends: 255 [2024-11-17 05:01:48,688 INFO L226 Difference]: Without dead ends: 254 [2024-11-17 05:01:48,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:01:48,689 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 97 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:48,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 865 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-17 05:01:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 198. [2024-11-17 05:01:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 130 states have (on average 1.4615384615384615) internal successors, (190), 188 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:01:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 202 transitions. [2024-11-17 05:01:48,696 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 202 transitions. Word has length 45 [2024-11-17 05:01:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:48,697 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 202 transitions. [2024-11-17 05:01:48,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 202 transitions. [2024-11-17 05:01:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 05:01:48,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:48,698 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, 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 05:01:48,712 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 05:01:48,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:48,902 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:48,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash -732150400, now seen corresponding path program 1 times [2024-11-17 05:01:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:48,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211433362] [2024-11-17 05:01:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:48,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:49,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 05:01:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:49,081 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 05:01:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211433362] [2024-11-17 05:01:49,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211433362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:49,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:49,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644609861] [2024-11-17 05:01:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:49,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:49,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:49,083 INFO L87 Difference]: Start difference. First operand 198 states and 202 transitions. Second operand has 6 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:49,205 INFO L93 Difference]: Finished difference Result 261 states and 266 transitions. [2024-11-17 05:01:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-17 05:01:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:49,207 INFO L225 Difference]: With dead ends: 261 [2024-11-17 05:01:49,208 INFO L226 Difference]: Without dead ends: 259 [2024-11-17 05:01:49,208 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 05:01:49,208 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 103 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:49,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 668 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:01:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-17 05:01:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 202. [2024-11-17 05:01:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 134 states have (on average 1.4477611940298507) internal successors, (194), 192 states have internal predecessors, (194), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:01:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2024-11-17 05:01:49,216 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 45 [2024-11-17 05:01:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:49,216 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 206 transitions. [2024-11-17 05:01:49,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 206 transitions. [2024-11-17 05:01:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-17 05:01:49,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:49,217 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, 1, 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 05:01:49,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 05:01:49,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:49,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1217042496, now seen corresponding path program 1 times [2024-11-17 05:01:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723274722] [2024-11-17 05:01:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:49,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558078128] [2024-11-17 05:01:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:49,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:49,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:49,244 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 05:01:49,245 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 05:01:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:49,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 05:01:49,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:49,353 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 05:01:49,355 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 05:01:49,361 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 05:01:49,864 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 05:01:49,877 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 05:01:49,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723274722] [2024-11-17 05:01:49,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558078128] [2024-11-17 05:01:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558078128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:49,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:49,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:01:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478152421] [2024-11-17 05:01:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:49,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:01:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:01:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:01:49,880 INFO L87 Difference]: Start difference. First operand 202 states and 206 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:50,117 INFO L93 Difference]: Finished difference Result 258 states and 263 transitions. [2024-11-17 05:01:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:01:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-17 05:01:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:50,119 INFO L225 Difference]: With dead ends: 258 [2024-11-17 05:01:50,120 INFO L226 Difference]: Without dead ends: 257 [2024-11-17 05:01:50,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:01:50,121 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 95 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:50,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 801 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-17 05:01:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 203. [2024-11-17 05:01:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 135 states have (on average 1.4444444444444444) internal successors, (195), 193 states have internal predecessors, (195), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:01:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 207 transitions. [2024-11-17 05:01:50,129 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 207 transitions. Word has length 46 [2024-11-17 05:01:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:50,129 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 207 transitions. [2024-11-17 05:01:50,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 207 transitions. [2024-11-17 05:01:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 05:01:50,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:50,130 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, 1, 1, 1, 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 05:01:50,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 05:01:50,334 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,SelfDestructingSolverStorable13 [2024-11-17 05:01:50,335 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:50,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1346730210, now seen corresponding path program 1 times [2024-11-17 05:01:50,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:50,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519872138] [2024-11-17 05:01:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:50,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427312463] [2024-11-17 05:01:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:50,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:50,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:50,371 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 05:01:50,383 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 05:01:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:50,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 05:01:50,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:50,495 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 05:01:50,566 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 05:01:50,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:50,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519872138] [2024-11-17 05:01:50,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427312463] [2024-11-17 05:01:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427312463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 05:01:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169611191] [2024-11-17 05:01:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:50,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 05:01:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 05:01:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 05:01:50,569 INFO L87 Difference]: Start difference. First operand 203 states and 207 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:50,711 INFO L93 Difference]: Finished difference Result 257 states and 262 transitions. [2024-11-17 05:01:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 05:01:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-17 05:01:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:50,713 INFO L225 Difference]: With dead ends: 257 [2024-11-17 05:01:50,713 INFO L226 Difference]: Without dead ends: 255 [2024-11-17 05:01:50,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:50,714 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 88 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:50,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 449 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:01:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-17 05:01:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 206. [2024-11-17 05:01:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 138 states have (on average 1.434782608695652) internal successors, (198), 196 states have internal predecessors, (198), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:01:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 210 transitions. [2024-11-17 05:01:50,725 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 210 transitions. Word has length 48 [2024-11-17 05:01:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:50,725 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 210 transitions. [2024-11-17 05:01:50,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 210 transitions. [2024-11-17 05:01:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 05:01:50,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:50,728 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, 1, 1, 1, 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 05:01:50,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 05:01:50,928 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,SelfDestructingSolverStorable14 [2024-11-17 05:01:50,928 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:50,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1648650255, now seen corresponding path program 1 times [2024-11-17 05:01:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388547926] [2024-11-17 05:01:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:50,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900267255] [2024-11-17 05:01:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:50,952 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 05:01:50,955 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 05:01:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:51,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 05:01:51,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:51,072 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 05:01:51,224 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 05:01:51,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:51,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:51,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388547926] [2024-11-17 05:01:51,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:51,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900267255] [2024-11-17 05:01:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900267255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:51,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:51,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446250411] [2024-11-17 05:01:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:51,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:51,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:51,226 INFO L87 Difference]: Start difference. First operand 206 states and 210 transitions. Second operand has 8 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 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 05:01:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:51,432 INFO L93 Difference]: Finished difference Result 278 states and 286 transitions. [2024-11-17 05:01:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 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 48 [2024-11-17 05:01:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:51,434 INFO L225 Difference]: With dead ends: 278 [2024-11-17 05:01:51,434 INFO L226 Difference]: Without dead ends: 277 [2024-11-17 05:01:51,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:51,435 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 167 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:51,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 636 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-17 05:01:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 215. [2024-11-17 05:01:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 145 states have (on average 1.4275862068965517) internal successors, (207), 204 states have internal predecessors, (207), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 221 transitions. [2024-11-17 05:01:51,442 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 221 transitions. Word has length 48 [2024-11-17 05:01:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:51,442 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 221 transitions. [2024-11-17 05:01:51,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 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 05:01:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 221 transitions. [2024-11-17 05:01:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 05:01:51,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:51,443 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, 1, 1, 1, 1, 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 05:01:51,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 05:01:51,646 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,SelfDestructingSolverStorable15 [2024-11-17 05:01:51,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:51,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash 431449629, now seen corresponding path program 1 times [2024-11-17 05:01:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:51,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395712662] [2024-11-17 05:01:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15354974] [2024-11-17 05:01:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:51,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:51,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:51,668 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 05:01:51,670 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 05:01:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:51,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 05:01:51,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:51,788 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 05:01:51,932 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 05:01:51,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:51,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:51,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395712662] [2024-11-17 05:01:51,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15354974] [2024-11-17 05:01:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15354974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881838551] [2024-11-17 05:01:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:51,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:51,934 INFO L87 Difference]: Start difference. First operand 215 states and 221 transitions. Second operand has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:52,135 INFO L93 Difference]: Finished difference Result 278 states and 285 transitions. [2024-11-17 05:01:52,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:52,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-17 05:01:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:52,137 INFO L225 Difference]: With dead ends: 278 [2024-11-17 05:01:52,138 INFO L226 Difference]: Without dead ends: 277 [2024-11-17 05:01:52,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:52,138 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 166 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:52,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 551 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-17 05:01:52,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 216. [2024-11-17 05:01:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 205 states have internal predecessors, (208), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 222 transitions. [2024-11-17 05:01:52,146 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 222 transitions. Word has length 49 [2024-11-17 05:01:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:52,146 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 222 transitions. [2024-11-17 05:01:52,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:01:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 222 transitions. [2024-11-17 05:01:52,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-17 05:01:52,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:52,147 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, 1, 1, 1, 1, 1, 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 05:01:52,165 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 05:01:52,350 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,SelfDestructingSolverStorable16 [2024-11-17 05:01:52,351 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:52,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1422571908, now seen corresponding path program 1 times [2024-11-17 05:01:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577736827] [2024-11-17 05:01:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971476562] [2024-11-17 05:01:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:52,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:52,385 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 05:01:52,397 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 05:01:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:52,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 05:01:52,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:52,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:01:52,611 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 05:01:52,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577736827] [2024-11-17 05:01:52,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971476562] [2024-11-17 05:01:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971476562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:52,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003574320] [2024-11-17 05:01:52,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:52,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:52,613 INFO L87 Difference]: Start difference. First operand 216 states and 222 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:52,750 INFO L93 Difference]: Finished difference Result 262 states and 266 transitions. [2024-11-17 05:01:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:52,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-17 05:01:52,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:52,752 INFO L225 Difference]: With dead ends: 262 [2024-11-17 05:01:52,752 INFO L226 Difference]: Without dead ends: 260 [2024-11-17 05:01:52,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:52,753 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 89 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:52,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 481 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:01:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-17 05:01:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 216. [2024-11-17 05:01:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 146 states have (on average 1.4109589041095891) internal successors, (206), 205 states have internal predecessors, (206), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2024-11-17 05:01:52,760 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 50 [2024-11-17 05:01:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:52,760 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 220 transitions. [2024-11-17 05:01:52,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:01:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 220 transitions. [2024-11-17 05:01:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-17 05:01:52,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:52,761 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, 1, 1, 1, 1, 1, 1, 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 05:01:52,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-17 05:01:52,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 05:01:52,966 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:52,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1988734853, now seen corresponding path program 1 times [2024-11-17 05:01:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981898307] [2024-11-17 05:01:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:52,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:52,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205034326] [2024-11-17 05:01:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:52,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:52,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:52,997 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 05:01:52,998 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 05:01:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:53,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 05:01:53,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:53,104 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 05:01:53,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-17 05:01:53,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-17 05:01:53,245 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 05:01:53,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981898307] [2024-11-17 05:01:53,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205034326] [2024-11-17 05:01:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205034326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:53,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:53,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:01:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108476306] [2024-11-17 05:01:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:53,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:01:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:01:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:01:53,248 INFO L87 Difference]: Start difference. First operand 216 states and 220 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 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 05:01:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:53,476 INFO L93 Difference]: Finished difference Result 276 states and 282 transitions. [2024-11-17 05:01:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:01:53,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 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 51 [2024-11-17 05:01:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:53,478 INFO L225 Difference]: With dead ends: 276 [2024-11-17 05:01:53,478 INFO L226 Difference]: Without dead ends: 275 [2024-11-17 05:01:53,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:53,479 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 166 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:53,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 664 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-17 05:01:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 218. [2024-11-17 05:01:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 148 states have (on average 1.4054054054054055) internal successors, (208), 207 states have internal predecessors, (208), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 222 transitions. [2024-11-17 05:01:53,488 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 222 transitions. Word has length 51 [2024-11-17 05:01:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:53,489 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 222 transitions. [2024-11-17 05:01:53,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 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 05:01:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 222 transitions. [2024-11-17 05:01:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 05:01:53,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:53,490 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, 1, 1, 1, 1, 1, 1, 1, 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 05:01:53,508 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 05:01:53,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:53,691 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:53,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1521238322, now seen corresponding path program 1 times [2024-11-17 05:01:53,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:53,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922957286] [2024-11-17 05:01:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:53,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:53,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537876093] [2024-11-17 05:01:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:53,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:53,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:53,716 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 05:01:53,718 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 05:01:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:53,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 05:01:53,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:53,824 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 05:01:53,925 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 05:01:53,970 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 05:01:53,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:53,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922957286] [2024-11-17 05:01:53,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537876093] [2024-11-17 05:01:53,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537876093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:53,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:53,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:01:53,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366338677] [2024-11-17 05:01:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:53,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:01:53,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:53,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:01:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:01:53,971 INFO L87 Difference]: Start difference. First operand 218 states and 222 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 05:01:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:54,285 INFO L93 Difference]: Finished difference Result 276 states and 281 transitions. [2024-11-17 05:01:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:01:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 52 [2024-11-17 05:01:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:54,287 INFO L225 Difference]: With dead ends: 276 [2024-11-17 05:01:54,287 INFO L226 Difference]: Without dead ends: 275 [2024-11-17 05:01:54,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:54,287 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 111 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:54,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 909 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-17 05:01:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 219. [2024-11-17 05:01:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 149 states have (on average 1.4026845637583893) internal successors, (209), 208 states have internal predecessors, (209), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 223 transitions. [2024-11-17 05:01:54,297 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 223 transitions. Word has length 52 [2024-11-17 05:01:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:54,298 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 223 transitions. [2024-11-17 05:01:54,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 05:01:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 223 transitions. [2024-11-17 05:01:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-17 05:01:54,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:54,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:54,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 05:01:54,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:54,500 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:54,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1621147572, now seen corresponding path program 1 times [2024-11-17 05:01:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860718906] [2024-11-17 05:01:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:54,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 05:01:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:54,682 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 05:01:54,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860718906] [2024-11-17 05:01:54,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860718906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:54,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:54,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550406292] [2024-11-17 05:01:54,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:54,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:54,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:54,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:54,685 INFO L87 Difference]: Start difference. First operand 219 states and 223 transitions. Second operand has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 05:01:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:54,973 INFO L93 Difference]: Finished difference Result 226 states and 230 transitions. [2024-11-17 05:01:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 54 [2024-11-17 05:01:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:54,975 INFO L225 Difference]: With dead ends: 226 [2024-11-17 05:01:54,975 INFO L226 Difference]: Without dead ends: 225 [2024-11-17 05:01:54,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:54,976 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 69 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:54,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 765 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-17 05:01:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2024-11-17 05:01:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 151 states have (on average 1.3973509933774835) internal successors, (211), 210 states have internal predecessors, (211), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2024-11-17 05:01:54,983 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 54 [2024-11-17 05:01:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:54,983 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2024-11-17 05:01:54,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 05:01:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2024-11-17 05:01:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-17 05:01:54,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:54,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:54,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-17 05:01:54,985 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:54,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1284032792, now seen corresponding path program 1 times [2024-11-17 05:01:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:54,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524632226] [2024-11-17 05:01:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:55,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 05:01:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:55,443 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 05:01:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524632226] [2024-11-17 05:01:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524632226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117613665] [2024-11-17 05:01:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:55,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:55,445 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 05:01:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:55,880 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2024-11-17 05:01:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:55,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 55 [2024-11-17 05:01:55,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:55,881 INFO L225 Difference]: With dead ends: 225 [2024-11-17 05:01:55,882 INFO L226 Difference]: Without dead ends: 224 [2024-11-17 05:01:55,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:55,882 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 66 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:55,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 769 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-17 05:01:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2024-11-17 05:01:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 152 states have (on average 1.394736842105263) internal successors, (212), 211 states have internal predecessors, (212), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2024-11-17 05:01:55,890 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 55 [2024-11-17 05:01:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:55,890 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 226 transitions. [2024-11-17 05:01:55,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 05:01:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2024-11-17 05:01:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-17 05:01:55,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:55,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:55,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 05:01:55,891 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:55,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1077339777, now seen corresponding path program 1 times [2024-11-17 05:01:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739847147] [2024-11-17 05:01:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:56,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:01:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:56,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-17 05:01:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:56,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-17 05:01:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:56,105 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 05:01:56,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:56,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739847147] [2024-11-17 05:01:56,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739847147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:56,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:56,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403648498] [2024-11-17 05:01:56,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:56,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:56,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:56,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:56,108 INFO L87 Difference]: Start difference. First operand 222 states and 226 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:01:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:56,380 INFO L93 Difference]: Finished difference Result 268 states and 277 transitions. [2024-11-17 05:01:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:56,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-11-17 05:01:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:56,382 INFO L225 Difference]: With dead ends: 268 [2024-11-17 05:01:56,382 INFO L226 Difference]: Without dead ends: 266 [2024-11-17 05:01:56,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 05:01:56,383 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 154 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:56,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 439 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-17 05:01:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 225. [2024-11-17 05:01:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 155 states have (on average 1.3870967741935485) internal successors, (215), 213 states have internal predecessors, (215), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:01:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 229 transitions. [2024-11-17 05:01:56,393 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 229 transitions. Word has length 58 [2024-11-17 05:01:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:56,393 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 229 transitions. [2024-11-17 05:01:56,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:01:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2024-11-17 05:01:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-17 05:01:56,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:56,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:56,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-17 05:01:56,394 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:01:56,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1848148213, now seen corresponding path program 1 times [2024-11-17 05:01:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609473847] [2024-11-17 05:01:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401743258] [2024-11-17 05:01:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:56,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:56,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:56,425 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 05:01:56,427 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 05:01:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:56,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-17 05:01:56,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:56,573 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 05:01:56,576 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 05:01:56,802 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 05:01:56,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 05:01:56,944 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 05:01:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:56,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:01:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609473847] [2024-11-17 05:01:57,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401743258] [2024-11-17 05:01:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401743258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:01:57,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 05:01:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-17 05:01:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337971955] [2024-11-17 05:01:57,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 05:01:57,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 05:01:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 05:01:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-17 05:01:57,441 INFO L87 Difference]: Start difference. First operand 225 states and 229 transitions. Second operand has 23 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:00,352 INFO L93 Difference]: Finished difference Result 442 states and 452 transitions. [2024-11-17 05:02:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 05:02:00,353 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2024-11-17 05:02:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:00,355 INFO L225 Difference]: With dead ends: 442 [2024-11-17 05:02:00,355 INFO L226 Difference]: Without dead ends: 440 [2024-11-17 05:02:00,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 05:02:00,356 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 812 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:00,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1750 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-17 05:02:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-17 05:02:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 319. [2024-11-17 05:02:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 241 states have (on average 1.4647302904564314) internal successors, (353), 301 states have internal predecessors, (353), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 379 transitions. [2024-11-17 05:02:00,368 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 379 transitions. Word has length 60 [2024-11-17 05:02:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:00,368 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 379 transitions. [2024-11-17 05:02:00,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 379 transitions. [2024-11-17 05:02:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-17 05:02:00,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:00,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:00,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 05:02:00,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:00,574 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:00,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1261414604, now seen corresponding path program 1 times [2024-11-17 05:02:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:00,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529237957] [2024-11-17 05:02:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:00,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:00,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741614122] [2024-11-17 05:02:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:00,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:00,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:00,601 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:00,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 05:02:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:00,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 05:02:00,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:00,726 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 05:02:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:00,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529237957] [2024-11-17 05:02:00,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741614122] [2024-11-17 05:02:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741614122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213087267] [2024-11-17 05:02:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:00,832 INFO L87 Difference]: Start difference. First operand 319 states and 379 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:01,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:01,153 INFO L93 Difference]: Finished difference Result 366 states and 425 transitions. [2024-11-17 05:02:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:01,153 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2024-11-17 05:02:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:01,155 INFO L225 Difference]: With dead ends: 366 [2024-11-17 05:02:01,155 INFO L226 Difference]: Without dead ends: 365 [2024-11-17 05:02:01,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:01,156 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 161 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:01,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 537 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-17 05:02:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 321. [2024-11-17 05:02:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 243 states have (on average 1.4609053497942386) internal successors, (355), 303 states have internal predecessors, (355), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 381 transitions. [2024-11-17 05:02:01,170 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 381 transitions. Word has length 61 [2024-11-17 05:02:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:01,170 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 381 transitions. [2024-11-17 05:02:01,170 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 381 transitions. [2024-11-17 05:02:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-17 05:02:01,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:01,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:01,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:01,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-17 05:02:01,376 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_25_to_33_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:01,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1458019804, now seen corresponding path program 1 times [2024-11-17 05:02:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:01,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592348782] [2024-11-17 05:02:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380312259] [2024-11-17 05:02:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:01,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:01,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:01,401 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:01,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 05:02:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:01,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-17 05:02:01,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:01,531 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 05:02:01,536 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 05:02:01,762 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 05:02:01,874 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 05:02:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:01,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:02,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:02,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592348782] [2024-11-17 05:02:02,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:02,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380312259] [2024-11-17 05:02:02,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380312259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:02,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 05:02:02,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-17 05:02:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709915462] [2024-11-17 05:02:02,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:02,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 05:02:02,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 05:02:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-17 05:02:02,317 INFO L87 Difference]: Start difference. First operand 321 states and 381 transitions. Second operand has 23 states, 20 states have (on average 5.65) internal successors, (113), 19 states have internal predecessors, (113), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:06,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-17 05:02:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:07,378 INFO L93 Difference]: Finished difference Result 438 states and 448 transitions. [2024-11-17 05:02:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 05:02:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.65) internal successors, (113), 19 states have internal predecessors, (113), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2024-11-17 05:02:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:07,381 INFO L225 Difference]: With dead ends: 438 [2024-11-17 05:02:07,381 INFO L226 Difference]: Without dead ends: 434 [2024-11-17 05:02:07,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=272, Invalid=1450, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 05:02:07,382 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 778 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:07,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1897 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-17 05:02:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-17 05:02:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 321. [2024-11-17 05:02:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 243 states have (on average 1.440329218106996) internal successors, (350), 303 states have internal predecessors, (350), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2024-11-17 05:02:07,395 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 61 [2024-11-17 05:02:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:07,395 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2024-11-17 05:02:07,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.65) internal successors, (113), 19 states have internal predecessors, (113), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2024-11-17 05:02:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-17 05:02:07,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:07,396 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, 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 05:02:07,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-17 05:02:07,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-17 05:02:07,597 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:07,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash 449147164, now seen corresponding path program 1 times [2024-11-17 05:02:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:07,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790997897] [2024-11-17 05:02:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955714107] [2024-11-17 05:02:07,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:07,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:07,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:07,632 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:07,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 05:02:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:07,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 05:02:07,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:07,759 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 05:02:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:07,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790997897] [2024-11-17 05:02:07,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955714107] [2024-11-17 05:02:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955714107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:07,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:07,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238654904] [2024-11-17 05:02:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:07,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:07,848 INFO L87 Difference]: Start difference. First operand 321 states and 376 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:08,189 INFO L93 Difference]: Finished difference Result 365 states and 419 transitions. [2024-11-17 05:02:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:08,190 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2024-11-17 05:02:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:08,191 INFO L225 Difference]: With dead ends: 365 [2024-11-17 05:02:08,191 INFO L226 Difference]: Without dead ends: 360 [2024-11-17 05:02:08,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:08,192 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 187 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:08,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 457 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 153 Invalid, 7 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-17 05:02:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 328. [2024-11-17 05:02:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 250 states have (on average 1.428) internal successors, (357), 310 states have internal predecessors, (357), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 383 transitions. [2024-11-17 05:02:08,204 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 383 transitions. Word has length 62 [2024-11-17 05:02:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:08,205 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 383 transitions. [2024-11-17 05:02:08,205 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 383 transitions. [2024-11-17 05:02:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 05:02:08,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:08,206 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:08,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-17 05:02:08,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-17 05:02:08,407 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_25_to_33_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:08,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 997694682, now seen corresponding path program 1 times [2024-11-17 05:02:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272935206] [2024-11-17 05:02:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:08,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538629569] [2024-11-17 05:02:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:08,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:08,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:08,429 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:08,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 05:02:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:08,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 05:02:08,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:08,568 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 05:02:08,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-17 05:02:08,701 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 05:02:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:08,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272935206] [2024-11-17 05:02:09,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538629569] [2024-11-17 05:02:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538629569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:09,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-17 05:02:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124156570] [2024-11-17 05:02:09,130 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:09,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 05:02:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 05:02:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-17 05:02:09,131 INFO L87 Difference]: Start difference. First operand 328 states and 383 transitions. Second operand has 10 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:09,468 INFO L93 Difference]: Finished difference Result 382 states and 414 transitions. [2024-11-17 05:02:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 05:02:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-17 05:02:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:09,470 INFO L225 Difference]: With dead ends: 382 [2024-11-17 05:02:09,470 INFO L226 Difference]: Without dead ends: 381 [2024-11-17 05:02:09,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-17 05:02:09,471 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 292 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:09,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 834 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-17 05:02:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 328. [2024-11-17 05:02:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 250 states have (on average 1.424) internal successors, (356), 310 states have internal predecessors, (356), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 382 transitions. [2024-11-17 05:02:09,485 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 382 transitions. Word has length 63 [2024-11-17 05:02:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:09,486 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 382 transitions. [2024-11-17 05:02:09,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 382 transitions. [2024-11-17 05:02:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-17 05:02:09,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:09,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:09,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-17 05:02:09,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:09,692 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:09,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash 863764114, now seen corresponding path program 1 times [2024-11-17 05:02:09,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:09,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457684183] [2024-11-17 05:02:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:09,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:09,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815824502] [2024-11-17 05:02:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:09,714 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:09,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-17 05:02:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:09,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 05:02:09,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:09,857 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 05:02:10,004 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 05:02:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:10,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457684183] [2024-11-17 05:02:13,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815824502] [2024-11-17 05:02:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815824502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:13,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:13,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-17 05:02:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86671931] [2024-11-17 05:02:13,871 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:13,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 05:02:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 05:02:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2024-11-17 05:02:13,872 INFO L87 Difference]: Start difference. First operand 328 states and 382 transitions. Second operand has 12 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:14,308 INFO L93 Difference]: Finished difference Result 381 states and 413 transitions. [2024-11-17 05:02:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 05:02:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-17 05:02:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:14,310 INFO L225 Difference]: With dead ends: 381 [2024-11-17 05:02:14,310 INFO L226 Difference]: Without dead ends: 380 [2024-11-17 05:02:14,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=84, Invalid=335, Unknown=1, NotChecked=0, Total=420 [2024-11-17 05:02:14,311 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 288 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:14,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 927 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-17 05:02:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 328. [2024-11-17 05:02:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 250 states have (on average 1.42) internal successors, (355), 310 states have internal predecessors, (355), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 381 transitions. [2024-11-17 05:02:14,323 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 381 transitions. Word has length 64 [2024-11-17 05:02:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:14,323 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 381 transitions. [2024-11-17 05:02:14,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 381 transitions. [2024-11-17 05:02:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-17 05:02:14,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:14,324 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:14,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-17 05:02:14,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-17 05:02:14,529 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_25_to_33_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:14,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1148626800, now seen corresponding path program 1 times [2024-11-17 05:02:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:14,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013903939] [2024-11-17 05:02:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:14,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:14,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333622051] [2024-11-17 05:02:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:14,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:14,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:14,558 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:14,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-17 05:02:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:14,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 05:02:14,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:14,707 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 05:02:14,844 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 05:02:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:14,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:17,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:17,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013903939] [2024-11-17 05:02:17,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:17,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333622051] [2024-11-17 05:02:17,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333622051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:17,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:17,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-17 05:02:17,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838362961] [2024-11-17 05:02:17,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:17,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 05:02:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 05:02:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-17 05:02:17,059 INFO L87 Difference]: Start difference. First operand 328 states and 381 transitions. Second operand has 13 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:17,555 INFO L93 Difference]: Finished difference Result 380 states and 412 transitions. [2024-11-17 05:02:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 05:02:17,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2024-11-17 05:02:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:17,557 INFO L225 Difference]: With dead ends: 380 [2024-11-17 05:02:17,557 INFO L226 Difference]: Without dead ends: 379 [2024-11-17 05:02:17,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-17 05:02:17,558 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 268 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:17,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1345 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-17 05:02:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 328. [2024-11-17 05:02:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 250 states have (on average 1.416) internal successors, (354), 310 states have internal predecessors, (354), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 380 transitions. [2024-11-17 05:02:17,570 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 380 transitions. Word has length 66 [2024-11-17 05:02:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:17,571 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 380 transitions. [2024-11-17 05:02:17,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 380 transitions. [2024-11-17 05:02:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-17 05:02:17,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:17,572 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:17,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-17 05:02:17,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:17,775 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:17,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1247692471, now seen corresponding path program 1 times [2024-11-17 05:02:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178827982] [2024-11-17 05:02:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:17,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983179328] [2024-11-17 05:02:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:17,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:17,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:17,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-17 05:02:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:17,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-17 05:02:17,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:17,939 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 05:02:18,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 05:02:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:18,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:20,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178827982] [2024-11-17 05:02:20,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983179328] [2024-11-17 05:02:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983179328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:20,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:20,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-17 05:02:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425942140] [2024-11-17 05:02:20,262 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:20,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 05:02:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 05:02:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-17 05:02:20,263 INFO L87 Difference]: Start difference. First operand 328 states and 380 transitions. Second operand has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:20,796 INFO L93 Difference]: Finished difference Result 379 states and 411 transitions. [2024-11-17 05:02:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 05:02:20,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2024-11-17 05:02:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:20,798 INFO L225 Difference]: With dead ends: 379 [2024-11-17 05:02:20,798 INFO L226 Difference]: Without dead ends: 378 [2024-11-17 05:02:20,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-17 05:02:20,799 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 265 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:20,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1247 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-17 05:02:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 328. [2024-11-17 05:02:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 250 states have (on average 1.412) internal successors, (353), 310 states have internal predecessors, (353), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2024-11-17 05:02:20,812 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 67 [2024-11-17 05:02:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:20,813 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2024-11-17 05:02:20,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2024-11-17 05:02:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-17 05:02:20,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:20,814 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, 1, 1, 1, 1, 1, 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 05:02:20,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:21,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:21,019 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:21,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash -374948699, now seen corresponding path program 1 times [2024-11-17 05:02:21,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:21,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529261874] [2024-11-17 05:02:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:21,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:21,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-17 05:02:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:21,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-17 05:02:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:21,404 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 05:02:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529261874] [2024-11-17 05:02:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529261874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:21,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379764496] [2024-11-17 05:02:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:21,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:21,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:21,406 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:21,907 INFO L93 Difference]: Finished difference Result 355 states and 410 transitions. [2024-11-17 05:02:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:21,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2024-11-17 05:02:21,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:21,909 INFO L225 Difference]: With dead ends: 355 [2024-11-17 05:02:21,909 INFO L226 Difference]: Without dead ends: 354 [2024-11-17 05:02:21,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:21,910 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 108 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:21,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 595 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:02:21,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-17 05:02:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 329. [2024-11-17 05:02:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 251 states have (on average 1.4103585657370519) internal successors, (354), 311 states have internal predecessors, (354), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 380 transitions. [2024-11-17 05:02:21,923 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 380 transitions. Word has length 69 [2024-11-17 05:02:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:21,924 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 380 transitions. [2024-11-17 05:02:21,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 380 transitions. [2024-11-17 05:02:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-17 05:02:21,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:21,925 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:21,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-17 05:02:21,925 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_25_to_33_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:21,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 736590261, now seen corresponding path program 1 times [2024-11-17 05:02:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459339589] [2024-11-17 05:02:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:21,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366574372] [2024-11-17 05:02:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:21,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:21,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:21,954 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:21,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-17 05:02:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:22,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-17 05:02:22,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:22,107 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 05:02:22,234 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 05:02:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:22,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:40,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459339589] [2024-11-17 05:02:40,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:40,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366574372] [2024-11-17 05:02:40,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366574372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:40,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:40,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-17 05:02:40,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467251212] [2024-11-17 05:02:40,028 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:40,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 05:02:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 05:02:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=383, Unknown=4, NotChecked=0, Total=462 [2024-11-17 05:02:40,029 INFO L87 Difference]: Start difference. First operand 329 states and 380 transitions. Second operand has 14 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:40,575 INFO L93 Difference]: Finished difference Result 377 states and 409 transitions. [2024-11-17 05:02:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 05:02:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2024-11-17 05:02:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:40,578 INFO L225 Difference]: With dead ends: 377 [2024-11-17 05:02:40,578 INFO L226 Difference]: Without dead ends: 376 [2024-11-17 05:02:40,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=146, Invalid=606, Unknown=4, NotChecked=0, Total=756 [2024-11-17 05:02:40,579 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 298 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:40,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1220 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-17 05:02:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2024-11-17 05:02:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 251 states have (on average 1.406374501992032) internal successors, (353), 311 states have internal predecessors, (353), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 379 transitions. [2024-11-17 05:02:40,590 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 379 transitions. Word has length 69 [2024-11-17 05:02:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:40,591 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 379 transitions. [2024-11-17 05:02:40,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 379 transitions. [2024-11-17 05:02:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-17 05:02:40,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:40,591 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, 1, 1, 1, 1, 1, 1, 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 05:02:40,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-17 05:02:40,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:40,792 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:40,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1261492309, now seen corresponding path program 1 times [2024-11-17 05:02:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898077281] [2024-11-17 05:02:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:40,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333226032] [2024-11-17 05:02:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:40,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:40,810 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:40,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-17 05:02:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:40,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 05:02:40,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:40,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:40,942 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 05:02:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:41,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:41,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:41,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898077281] [2024-11-17 05:02:41,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:41,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333226032] [2024-11-17 05:02:41,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333226032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:41,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638834560] [2024-11-17 05:02:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:41,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:41,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:41,167 INFO L87 Difference]: Start difference. First operand 329 states and 379 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:41,481 INFO L93 Difference]: Finished difference Result 359 states and 408 transitions. [2024-11-17 05:02:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:02:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 70 [2024-11-17 05:02:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:41,482 INFO L225 Difference]: With dead ends: 359 [2024-11-17 05:02:41,482 INFO L226 Difference]: Without dead ends: 358 [2024-11-17 05:02:41,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-17 05:02:41,483 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 170 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:41,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 644 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 1 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-17 05:02:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 330. [2024-11-17 05:02:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.4047619047619047) internal successors, (354), 312 states have internal predecessors, (354), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 380 transitions. [2024-11-17 05:02:41,495 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 380 transitions. Word has length 70 [2024-11-17 05:02:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:41,495 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 380 transitions. [2024-11-17 05:02:41,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:02:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 380 transitions. [2024-11-17 05:02:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-17 05:02:41,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:41,497 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:41,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-17 05:02:41,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:41,698 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_25_to_33_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:41,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1359461645, now seen corresponding path program 1 times [2024-11-17 05:02:41,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:41,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681516433] [2024-11-17 05:02:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:41,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688654770] [2024-11-17 05:02:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:41,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:41,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:41,719 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:41,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-17 05:02:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:41,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-17 05:02:41,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:41,875 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 05:02:42,008 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 05:02:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:42,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:44,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:44,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681516433] [2024-11-17 05:02:44,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688654770] [2024-11-17 05:02:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688654770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:44,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:44,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-17 05:02:44,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430398250] [2024-11-17 05:02:44,212 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:44,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 05:02:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 05:02:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-17 05:02:44,213 INFO L87 Difference]: Start difference. First operand 330 states and 380 transitions. Second operand has 14 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:44,911 INFO L93 Difference]: Finished difference Result 375 states and 407 transitions. [2024-11-17 05:02:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 05:02:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2024-11-17 05:02:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:44,913 INFO L225 Difference]: With dead ends: 375 [2024-11-17 05:02:44,913 INFO L226 Difference]: Without dead ends: 374 [2024-11-17 05:02:44,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2024-11-17 05:02:44,914 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 291 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:44,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1286 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-17 05:02:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 330. [2024-11-17 05:02:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.4007936507936507) internal successors, (353), 312 states have internal predecessors, (353), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-17 05:02:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 379 transitions. [2024-11-17 05:02:44,924 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 379 transitions. Word has length 70 [2024-11-17 05:02:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:44,925 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 379 transitions. [2024-11-17 05:02:44,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 379 transitions. [2024-11-17 05:02:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-17 05:02:44,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:44,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:44,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-17 05:02:45,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-17 05:02:45,126 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-17 05:02:45,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash -806361933, now seen corresponding path program 1 times [2024-11-17 05:02:45,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:45,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938888263] [2024-11-17 05:02:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:45,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921317979] [2024-11-17 05:02:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:45,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:45,149 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:45,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-17 05:02:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:45,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-17 05:02:45,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:45,286 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 05:02:45,289 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 05:02:45,444 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 05:02:45,568 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 05:02:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:45,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938888263] [2024-11-17 05:02:46,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921317979] [2024-11-17 05:02:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921317979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:46,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 05:02:46,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-11-17 05:02:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740531777] [2024-11-17 05:02:46,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:46,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-17 05:02:46,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-17 05:02:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-11-17 05:02:46,322 INFO L87 Difference]: Start difference. First operand 330 states and 379 transitions. Second operand has 29 states, 26 states have (on average 5.115384615384615) internal successors, (133), 25 states have internal predecessors, (133), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:51,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-17 05:02:57,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []