./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.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 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:01:57,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:01:57,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:01:57,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:01:57,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:01:57,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:01:57,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:01:57,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:01:57,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:01:57,419 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:01:57,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:01:57,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:01:57,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:01:57,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:01:57,421 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:01:57,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:01:57,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:01:57,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:01:57,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:01:57,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:01:57,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:01:57,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:01:57,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:01:57,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:01:57,428 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:01:57,428 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:01:57,428 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:01:57,428 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:01:57,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:01:57,429 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:01:57,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:01:57,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:01:57,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:01:57,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:01:57,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:57,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:01:57,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:01:57,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:01:57,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:01:57,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:01:57,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:01:57,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:01:57,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:01:57,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:01:57,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2024-10-13 14:01:57,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:01:57,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:01:57,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:01:57,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:01:57,743 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:01:57,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-10-13 14:01:59,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:01:59,404 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:01:59,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-10-13 14:01:59,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a5aae88/b5b2aab6ddba42b9aa88ec4c3f80ad16/FLAGd0b8a37bf [2024-10-13 14:01:59,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a5aae88/b5b2aab6ddba42b9aa88ec4c3f80ad16 [2024-10-13 14:01:59,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:01:59,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:01:59,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:59,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:01:59,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:01:59,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21479d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59, skipping insertion in model container [2024-10-13 14:01:59,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:01:59,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:59,722 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:01:59,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:59,792 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:01:59,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59 WrapperNode [2024-10-13 14:01:59,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:59,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:59,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:01:59,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:01:59,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,837 INFO L138 Inliner]: procedures = 18, calls = 128, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2024-10-13 14:01:59,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:59,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:01:59,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:01:59,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:01:59,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,884 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 6, 5, 6, 6, 7, 7, 5, 6, 9, 6, 7, 5]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2]. [2024-10-13 14:01:59,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:01:59,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:01:59,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:01:59,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:01:59,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (1/1) ... [2024-10-13 14:01:59,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:59,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:59,962 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) [2024-10-13 14:01:59,970 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 [2024-10-13 14:02:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:02:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 14:02:00,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 14:02:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:02:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:02:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:02:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:02:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 14:02:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 14:02:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-13 14:02:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-13 14:02:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-13 14:02:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-13 14:02:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-13 14:02:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-13 14:02:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-13 14:02:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-10-13 14:02:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-10-13 14:02:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-10-13 14:02:00,029 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-10-13 14:02:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:02:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-10-13 14:02:00,030 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-10-13 14:02:00,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:02:00,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:02:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:02:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:02:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 14:02:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 14:02:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-13 14:02:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-13 14:02:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-13 14:02:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-13 14:02:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-13 14:02:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-13 14:02:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-13 14:02:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:02:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 14:02:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-13 14:02:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 14:02:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 14:02:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:02:00,244 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:02:00,246 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:02:00,939 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-10-13 14:02:00,939 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:02:00,985 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:02:00,986 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 14:02:00,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:00 BoogieIcfgContainer [2024-10-13 14:02:00,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:02:00,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:02:00,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:02:00,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:02:00,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:59" (1/3) ... [2024-10-13 14:02:00,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a90b81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:00, skipping insertion in model container [2024-10-13 14:02:00,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:59" (2/3) ... [2024-10-13 14:02:00,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a90b81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:00, skipping insertion in model container [2024-10-13 14:02:00,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:00" (3/3) ... [2024-10-13 14:02:00,998 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-10-13 14:02:01,016 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:02:01,016 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-10-13 14:02:01,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:02:01,087 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;@37ef3e92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:02:01,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-13 14:02:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 79 states have (on average 1.7341772151898733) internal successors, (137), 132 states have internal predecessors, (137), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-13 14:02:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 14:02:01,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:01,098 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:01,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:01,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1541213432, now seen corresponding path program 1 times [2024-10-13 14:02:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558381879] [2024-10-13 14:02:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:01,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:01,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:01,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:02:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:01,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558381879] [2024-10-13 14:02:01,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558381879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:01,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:01,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 14:02:01,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174424512] [2024-10-13 14:02:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:01,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 14:02:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:01,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 14:02:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 14:02:01,554 INFO L87 Difference]: Start difference. First operand has 148 states, 79 states have (on average 1.7341772151898733) internal successors, (137), 132 states have internal predecessors, (137), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:02,173 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2024-10-13 14:02:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 14:02:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-10-13 14:02:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:02,190 INFO L225 Difference]: With dead ends: 300 [2024-10-13 14:02:02,191 INFO L226 Difference]: Without dead ends: 151 [2024-10-13 14:02:02,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 14:02:02,200 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 66 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:02,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 122 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 14:02:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-13 14:02:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2024-10-13 14:02:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 78 states have (on average 1.6666666666666667) internal successors, (130), 130 states have internal predecessors, (130), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-13 14:02:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2024-10-13 14:02:02,249 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 20 [2024-10-13 14:02:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:02,250 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2024-10-13 14:02:02,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2024-10-13 14:02:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:02:02,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:02,252 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:02,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 14:02:02,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:02,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1944077212, now seen corresponding path program 1 times [2024-10-13 14:02:02,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010666442] [2024-10-13 14:02:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:02,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:02,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:02,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:02,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:02:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:02,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:02,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010666442] [2024-10-13 14:02:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010666442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:02,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:02,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 14:02:02,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925331748] [2024-10-13 14:02:02,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:02,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 14:02:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 14:02:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:02:02,895 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:04,157 INFO L93 Difference]: Finished difference Result 180 states and 191 transitions. [2024-10-13 14:02:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 14:02:04,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2024-10-13 14:02:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:04,159 INFO L225 Difference]: With dead ends: 180 [2024-10-13 14:02:04,159 INFO L226 Difference]: Without dead ends: 151 [2024-10-13 14:02:04,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-10-13 14:02:04,161 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 91 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:04,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 573 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 14:02:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-13 14:02:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2024-10-13 14:02:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 79 states have (on average 1.6582278481012658) internal successors, (131), 131 states have internal predecessors, (131), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-10-13 14:02:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2024-10-13 14:02:04,185 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 21 [2024-10-13 14:02:04,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:04,185 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2024-10-13 14:02:04,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2024-10-13 14:02:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 14:02:04,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:04,187 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] [2024-10-13 14:02:04,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 14:02:04,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:04,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1901822174, now seen corresponding path program 1 times [2024-10-13 14:02:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:04,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012214159] [2024-10-13 14:02:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:04,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981822805] [2024-10-13 14:02:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:04,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:04,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:04,279 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) [2024-10-13 14:02:04,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 14:02:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:04,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-13 14:02:04,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:04,549 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 [2024-10-13 14:02:04,620 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 [2024-10-13 14:02:04,814 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 [2024-10-13 14:02:04,822 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 [2024-10-13 14:02:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:04,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:04,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012214159] [2024-10-13 14:02:04,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:04,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981822805] [2024-10-13 14:02:04,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981822805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:04,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-13 14:02:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586818028] [2024-10-13 14:02:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:04,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 14:02:04,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 14:02:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:04,850 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:05,405 INFO L93 Difference]: Finished difference Result 240 states and 257 transitions. [2024-10-13 14:02:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 14:02:05,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-10-13 14:02:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:05,408 INFO L225 Difference]: With dead ends: 240 [2024-10-13 14:02:05,408 INFO L226 Difference]: Without dead ends: 237 [2024-10-13 14:02:05,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:02:05,409 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 187 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:05,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1446 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:02:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-13 14:02:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 201. [2024-10-13 14:02:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 123 states have (on average 1.6585365853658536) internal successors, (204), 177 states have internal predecessors, (204), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2024-10-13 14:02:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 245 transitions. [2024-10-13 14:02:05,443 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 245 transitions. Word has length 25 [2024-10-13 14:02:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:05,443 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 245 transitions. [2024-10-13 14:02:05,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 245 transitions. [2024-10-13 14:02:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 14:02:05,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:05,447 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] [2024-10-13 14:02:05,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 14:02:05,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:05,651 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_70_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:05,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1899033830, now seen corresponding path program 1 times [2024-10-13 14:02:05,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:05,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643176457] [2024-10-13 14:02:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:05,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:05,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923351600] [2024-10-13 14:02:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:05,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:05,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:05,698 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) [2024-10-13 14:02:05,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 14:02:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:05,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 14:02:05,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:05,874 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 [2024-10-13 14:02:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:06,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:06,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:06,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643176457] [2024-10-13 14:02:06,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:06,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923351600] [2024-10-13 14:02:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923351600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:06,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:02:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789843408] [2024-10-13 14:02:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:06,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:02:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:02:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:02:06,019 INFO L87 Difference]: Start difference. First operand 201 states and 245 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:06,190 INFO L93 Difference]: Finished difference Result 241 states and 257 transitions. [2024-10-13 14:02:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:02:06,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-10-13 14:02:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:06,192 INFO L225 Difference]: With dead ends: 241 [2024-10-13 14:02:06,192 INFO L226 Difference]: Without dead ends: 239 [2024-10-13 14:02:06,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:02:06,194 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 107 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:06,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 699 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-13 14:02:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 208. [2024-10-13 14:02:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 129 states have (on average 1.627906976744186) internal successors, (210), 182 states have internal predecessors, (210), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-10-13 14:02:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 251 transitions. [2024-10-13 14:02:06,217 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 251 transitions. Word has length 25 [2024-10-13 14:02:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:06,218 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 251 transitions. [2024-10-13 14:02:06,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 251 transitions. [2024-10-13 14:02:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-13 14:02:06,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:06,219 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] [2024-10-13 14:02:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:06,419 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 [2024-10-13 14:02:06,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:06,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1173054713, now seen corresponding path program 1 times [2024-10-13 14:02:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:06,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650534759] [2024-10-13 14:02:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:06,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:06,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744278554] [2024-10-13 14:02:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:06,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:06,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:06,463 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) [2024-10-13 14:02:06,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 14:02:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:06,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-13 14:02:06,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:06,669 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 [2024-10-13 14:02:06,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:06,872 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 [2024-10-13 14:02:06,878 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 [2024-10-13 14:02:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:06,897 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:06,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:06,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650534759] [2024-10-13 14:02:06,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:06,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744278554] [2024-10-13 14:02:06,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744278554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:06,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:06,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-13 14:02:06,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82846609] [2024-10-13 14:02:06,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:06,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 14:02:06,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 14:02:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:06,900 INFO L87 Difference]: Start difference. First operand 208 states and 251 transitions. Second operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:07,373 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2024-10-13 14:02:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 14:02:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-10-13 14:02:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:07,375 INFO L225 Difference]: With dead ends: 239 [2024-10-13 14:02:07,375 INFO L226 Difference]: Without dead ends: 238 [2024-10-13 14:02:07,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:02:07,376 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 176 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:07,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1455 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:02:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-13 14:02:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 208. [2024-10-13 14:02:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 129 states have (on average 1.62015503875969) internal successors, (209), 182 states have internal predecessors, (209), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-10-13 14:02:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2024-10-13 14:02:07,401 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 26 [2024-10-13 14:02:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:07,402 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2024-10-13 14:02:07,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2024-10-13 14:02:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-13 14:02:07,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:07,403 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] [2024-10-13 14:02:07,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:07,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:07,625 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_47_to_56_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:07,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2004957696, now seen corresponding path program 1 times [2024-10-13 14:02:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943582571] [2024-10-13 14:02:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:07,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:07,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797580773] [2024-10-13 14:02:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:07,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:07,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:07,672 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) [2024-10-13 14:02:07,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 14:02:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:07,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-13 14:02:07,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:07,898 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 [2024-10-13 14:02:07,973 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 [2024-10-13 14:02:08,139 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 [2024-10-13 14:02:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:02:08,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:02:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:08,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943582571] [2024-10-13 14:02:08,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:08,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797580773] [2024-10-13 14:02:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797580773] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:02:08,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:02:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-10-13 14:02:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64729819] [2024-10-13 14:02:08,838 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 14:02:08,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 14:02:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 14:02:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-10-13 14:02:08,840 INFO L87 Difference]: Start difference. First operand 208 states and 250 transitions. Second operand has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:12,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:02:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:13,541 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2024-10-13 14:02:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 14:02:13,542 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-10-13 14:02:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:13,543 INFO L225 Difference]: With dead ends: 238 [2024-10-13 14:02:13,543 INFO L226 Difference]: Without dead ends: 237 [2024-10-13 14:02:13,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-10-13 14:02:13,545 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 346 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:13,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1409 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-13 14:02:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-13 14:02:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2024-10-13 14:02:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 132 states have (on average 1.5984848484848484) internal successors, (211), 185 states have internal predecessors, (211), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-10-13 14:02:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 252 transitions. [2024-10-13 14:02:13,572 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 252 transitions. Word has length 27 [2024-10-13 14:02:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:13,572 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 252 transitions. [2024-10-13 14:02:13,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 252 transitions. [2024-10-13 14:02:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-13 14:02:13,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:13,576 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] [2024-10-13 14:02:13,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 14:02:13,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:13,777 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_70_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:13,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -389586584, now seen corresponding path program 1 times [2024-10-13 14:02:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:13,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131146196] [2024-10-13 14:02:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:14,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:14,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:14,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-13 14:02:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131146196] [2024-10-13 14:02:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131146196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:14,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:14,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:02:14,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154449208] [2024-10-13 14:02:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:14,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:02:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:14,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:02:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:14,096 INFO L87 Difference]: Start difference. First operand 212 states and 252 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:15,210 INFO L93 Difference]: Finished difference Result 223 states and 268 transitions. [2024-10-13 14:02:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 14:02:15,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-10-13 14:02:15,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:15,212 INFO L225 Difference]: With dead ends: 223 [2024-10-13 14:02:15,213 INFO L226 Difference]: Without dead ends: 222 [2024-10-13 14:02:15,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:02:15,214 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 72 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:15,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 470 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 14:02:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-10-13 14:02:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 213. [2024-10-13 14:02:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 133 states have (on average 1.593984962406015) internal successors, (212), 186 states have internal predecessors, (212), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-10-13 14:02:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 253 transitions. [2024-10-13 14:02:15,229 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 253 transitions. Word has length 27 [2024-10-13 14:02:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:15,230 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 253 transitions. [2024-10-13 14:02:15,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 253 transitions. [2024-10-13 14:02:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-13 14:02:15,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:15,231 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] [2024-10-13 14:02:15,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 14:02:15,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_47_to_56_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:15,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2024146391, now seen corresponding path program 1 times [2024-10-13 14:02:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:15,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825391986] [2024-10-13 14:02:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062482455] [2024-10-13 14:02:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:15,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:15,297 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) [2024-10-13 14:02:15,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 14:02:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:15,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-10-13 14:02:15,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:15,516 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 [2024-10-13 14:02:15,520 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 [2024-10-13 14:02:15,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-13 14:02:15,646 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 [2024-10-13 14:02:15,649 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 [2024-10-13 14:02:15,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 14:02:15,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-13 14:02:15,787 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 [2024-10-13 14:02:15,923 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 [2024-10-13 14:02:15,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 14:02:16,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 14:02:16,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-13 14:02:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:16,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825391986] [2024-10-13 14:02:16,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062482455] [2024-10-13 14:02:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062482455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:16,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:16,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-13 14:02:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987589776] [2024-10-13 14:02:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:16,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 14:02:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:16,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 14:02:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:02:16,152 INFO L87 Difference]: Start difference. First operand 213 states and 253 transitions. Second operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:17,503 INFO L93 Difference]: Finished difference Result 291 states and 338 transitions. [2024-10-13 14:02:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 14:02:17,504 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-10-13 14:02:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:17,506 INFO L225 Difference]: With dead ends: 291 [2024-10-13 14:02:17,506 INFO L226 Difference]: Without dead ends: 290 [2024-10-13 14:02:17,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2024-10-13 14:02:17,507 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 285 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:17,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1718 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 14:02:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-10-13 14:02:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 263. [2024-10-13 14:02:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 174 states have (on average 1.603448275862069) internal successors, (279), 229 states have internal predecessors, (279), 27 states have call successors, (27), 12 states have call predecessors, (27), 12 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-10-13 14:02:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 334 transitions. [2024-10-13 14:02:17,530 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 334 transitions. Word has length 28 [2024-10-13 14:02:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:17,531 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 334 transitions. [2024-10-13 14:02:17,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:02:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 334 transitions. [2024-10-13 14:02:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-13 14:02:17,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:17,532 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] [2024-10-13 14:02:17,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:17,732 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 [2024-10-13 14:02:17,733 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_70_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:17,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 807717900, now seen corresponding path program 1 times [2024-10-13 14:02:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:17,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142511482] [2024-10-13 14:02:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:17,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660331972] [2024-10-13 14:02:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:17,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:17,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:17,782 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) [2024-10-13 14:02:17,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 14:02:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:17,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 14:02:17,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:17,950 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 [2024-10-13 14:02:17,973 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 [2024-10-13 14:02:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:18,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:18,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:18,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142511482] [2024-10-13 14:02:18,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:18,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660331972] [2024-10-13 14:02:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660331972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:02:18,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474402025] [2024-10-13 14:02:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:18,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:02:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:02:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:18,053 INFO L87 Difference]: Start difference. First operand 263 states and 334 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:18,728 INFO L93 Difference]: Finished difference Result 299 states and 345 transitions. [2024-10-13 14:02:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 14:02:18,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-10-13 14:02:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:18,730 INFO L225 Difference]: With dead ends: 299 [2024-10-13 14:02:18,730 INFO L226 Difference]: Without dead ends: 298 [2024-10-13 14:02:18,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:02:18,731 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 75 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:18,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 422 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 14:02:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-13 14:02:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 274. [2024-10-13 14:02:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 183 states have (on average 1.5737704918032787) internal successors, (288), 237 states have internal predecessors, (288), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-10-13 14:02:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 344 transitions. [2024-10-13 14:02:18,752 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 344 transitions. Word has length 28 [2024-10-13 14:02:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:18,752 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 344 transitions. [2024-10-13 14:02:18,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 344 transitions. [2024-10-13 14:02:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-13 14:02:18,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:18,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:18,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 14:02:18,957 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 [2024-10-13 14:02:18,958 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_47_to_56_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:18,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1675971362, now seen corresponding path program 1 times [2024-10-13 14:02:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:18,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533437313] [2024-10-13 14:02:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:18,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:18,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336538714] [2024-10-13 14:02:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:18,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:18,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:18,999 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) [2024-10-13 14:02:19,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 14:02:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:19,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-13 14:02:19,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:19,203 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 [2024-10-13 14:02:19,262 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 [2024-10-13 14:02:19,266 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 [2024-10-13 14:02:19,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 14:02:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:19,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:19,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533437313] [2024-10-13 14:02:19,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336538714] [2024-10-13 14:02:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336538714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:19,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 14:02:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545996282] [2024-10-13 14:02:19,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:19,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 14:02:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 14:02:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-13 14:02:19,476 INFO L87 Difference]: Start difference. First operand 274 states and 344 transitions. Second operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:02:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:20,075 INFO L93 Difference]: Finished difference Result 299 states and 344 transitions. [2024-10-13 14:02:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 14:02:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-10-13 14:02:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:20,077 INFO L225 Difference]: With dead ends: 299 [2024-10-13 14:02:20,077 INFO L226 Difference]: Without dead ends: 298 [2024-10-13 14:02:20,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-13 14:02:20,078 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 284 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:20,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1256 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:02:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-13 14:02:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 274. [2024-10-13 14:02:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 183 states have (on average 1.5628415300546448) internal successors, (286), 237 states have internal predecessors, (286), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-10-13 14:02:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 342 transitions. [2024-10-13 14:02:20,102 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 342 transitions. Word has length 29 [2024-10-13 14:02:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:20,102 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 342 transitions. [2024-10-13 14:02:20,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:02:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 342 transitions. [2024-10-13 14:02:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-13 14:02:20,103 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:20,104 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:20,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 14:02:20,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:20,304 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_70_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:20,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -730548758, now seen corresponding path program 1 times [2024-10-13 14:02:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910318716] [2024-10-13 14:02:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:20,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416675900] [2024-10-13 14:02:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:20,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:20,348 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) [2024-10-13 14:02:20,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 14:02:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:20,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 14:02:20,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:20,543 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 [2024-10-13 14:02:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:20,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:20,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:20,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910318716] [2024-10-13 14:02:20,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:20,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416675900] [2024-10-13 14:02:20,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416675900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:20,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:20,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:02:20,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760470108] [2024-10-13 14:02:20,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:20,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 14:02:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:20,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 14:02:20,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 14:02:20,570 INFO L87 Difference]: Start difference. First operand 274 states and 342 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:21,099 INFO L93 Difference]: Finished difference Result 293 states and 365 transitions. [2024-10-13 14:02:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 14:02:21,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-10-13 14:02:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:21,103 INFO L225 Difference]: With dead ends: 293 [2024-10-13 14:02:21,103 INFO L226 Difference]: Without dead ends: 291 [2024-10-13 14:02:21,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 14:02:21,104 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 88 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:21,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 233 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:02:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-10-13 14:02:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2024-10-13 14:02:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 191 states have (on average 1.5602094240837696) internal successors, (298), 244 states have internal predecessors, (298), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 356 transitions. [2024-10-13 14:02:21,133 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 356 transitions. Word has length 29 [2024-10-13 14:02:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:21,133 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 356 transitions. [2024-10-13 14:02:21,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 356 transitions. [2024-10-13 14:02:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-13 14:02:21,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:21,134 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:21,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 14:02:21,334 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,SelfDestructingSolverStorable10 [2024-10-13 14:02:21,335 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_47_to_56_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:21,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:21,335 INFO L85 PathProgramCache]: Analyzing trace with hash 415504715, now seen corresponding path program 1 times [2024-10-13 14:02:21,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:21,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651156210] [2024-10-13 14:02:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446534409] [2024-10-13 14:02:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:21,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:21,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:21,378 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) [2024-10-13 14:02:21,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 14:02:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:21,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-10-13 14:02:21,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:21,618 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 [2024-10-13 14:02:21,678 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 11 [2024-10-13 14:02:21,681 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 [2024-10-13 14:02:21,684 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 [2024-10-13 14:02:21,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:02:21,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 14:02:21,753 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 27 treesize of output 19 [2024-10-13 14:02:21,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 14:02:21,832 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 11 treesize of output 7 [2024-10-13 14:02:21,927 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 [2024-10-13 14:02:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:21,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:21,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651156210] [2024-10-13 14:02:21,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446534409] [2024-10-13 14:02:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446534409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:21,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:21,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-13 14:02:21,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433334691] [2024-10-13 14:02:21,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:21,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 14:02:21,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 14:02:21,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:02:21,950 INFO L87 Difference]: Start difference. First operand 283 states and 356 transitions. Second operand has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:02:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:22,643 INFO L93 Difference]: Finished difference Result 306 states and 356 transitions. [2024-10-13 14:02:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 14:02:22,644 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-10-13 14:02:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:22,646 INFO L225 Difference]: With dead ends: 306 [2024-10-13 14:02:22,647 INFO L226 Difference]: Without dead ends: 305 [2024-10-13 14:02:22,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-10-13 14:02:22,648 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 277 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:22,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1431 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 14:02:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-10-13 14:02:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 283. [2024-10-13 14:02:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 191 states have (on average 1.5549738219895288) internal successors, (297), 244 states have internal predecessors, (297), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 355 transitions. [2024-10-13 14:02:22,675 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 355 transitions. Word has length 30 [2024-10-13 14:02:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:22,676 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 355 transitions. [2024-10-13 14:02:22,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:02:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 355 transitions. [2024-10-13 14:02:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-13 14:02:22,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:22,677 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] [2024-10-13 14:02:22,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:22,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:22,877 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_70_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:22,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1977683348, now seen corresponding path program 1 times [2024-10-13 14:02:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:22,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131407099] [2024-10-13 14:02:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:23,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:23,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:23,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-13 14:02:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:23,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131407099] [2024-10-13 14:02:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131407099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:23,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:02:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465327859] [2024-10-13 14:02:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:23,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:02:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:02:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:23,211 INFO L87 Difference]: Start difference. First operand 283 states and 355 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:23,917 INFO L93 Difference]: Finished difference Result 302 states and 379 transitions. [2024-10-13 14:02:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 14:02:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-10-13 14:02:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:23,919 INFO L225 Difference]: With dead ends: 302 [2024-10-13 14:02:23,919 INFO L226 Difference]: Without dead ends: 301 [2024-10-13 14:02:23,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:02:23,920 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 81 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:23,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 408 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 14:02:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-13 14:02:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 289. [2024-10-13 14:02:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 197 states have (on average 1.5532994923857868) internal successors, (306), 250 states have internal predecessors, (306), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 364 transitions. [2024-10-13 14:02:23,963 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 364 transitions. Word has length 31 [2024-10-13 14:02:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:23,963 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 364 transitions. [2024-10-13 14:02:23,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 364 transitions. [2024-10-13 14:02:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-13 14:02:23,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:23,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:23,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 14:02:23,966 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_70_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:23,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1178641520, now seen corresponding path program 1 times [2024-10-13 14:02:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:23,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441262945] [2024-10-13 14:02:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:23,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:24,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442713969] [2024-10-13 14:02:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:24,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:24,005 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) [2024-10-13 14:02:24,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 14:02:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:24,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-13 14:02:24,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:24,199 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 [2024-10-13 14:02:24,203 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 [2024-10-13 14:02:24,237 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 [2024-10-13 14:02:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:24,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:24,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:24,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441262945] [2024-10-13 14:02:24,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442713969] [2024-10-13 14:02:24,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442713969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:24,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:24,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 14:02:24,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359052633] [2024-10-13 14:02:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:24,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:02:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:24,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:02:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:24,353 INFO L87 Difference]: Start difference. First operand 289 states and 364 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:25,243 INFO L93 Difference]: Finished difference Result 315 states and 367 transitions. [2024-10-13 14:02:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 14:02:25,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-10-13 14:02:25,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:25,247 INFO L225 Difference]: With dead ends: 315 [2024-10-13 14:02:25,247 INFO L226 Difference]: Without dead ends: 314 [2024-10-13 14:02:25,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:02:25,248 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 87 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:25,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 432 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 14:02:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-13 14:02:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 291. [2024-10-13 14:02:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.5477386934673367) internal successors, (308), 252 states have internal predecessors, (308), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2024-10-13 14:02:25,275 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 32 [2024-10-13 14:02:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:25,275 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2024-10-13 14:02:25,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2024-10-13 14:02:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-13 14:02:25,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:25,276 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:25,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 14:02:25,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 14:02:25,477 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_47_to_56_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:25,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2098633479, now seen corresponding path program 1 times [2024-10-13 14:02:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033782114] [2024-10-13 14:02:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:25,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464037598] [2024-10-13 14:02:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:25,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:25,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:25,550 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) [2024-10-13 14:02:25,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 14:02:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:25,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 14:02:25,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:25,759 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 [2024-10-13 14:02:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:25,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:25,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033782114] [2024-10-13 14:02:25,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464037598] [2024-10-13 14:02:25,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464037598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:25,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:25,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 14:02:25,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814625633] [2024-10-13 14:02:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:25,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 14:02:25,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 14:02:25,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:02:25,853 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:26,107 INFO L93 Difference]: Finished difference Result 316 states and 366 transitions. [2024-10-13 14:02:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 14:02:26,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-10-13 14:02:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:26,108 INFO L225 Difference]: With dead ends: 316 [2024-10-13 14:02:26,108 INFO L226 Difference]: Without dead ends: 314 [2024-10-13 14:02:26,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:02:26,109 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:26,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1176 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:02:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-13 14:02:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 291. [2024-10-13 14:02:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.5276381909547738) internal successors, (304), 252 states have internal predecessors, (304), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 362 transitions. [2024-10-13 14:02:26,134 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 362 transitions. Word has length 37 [2024-10-13 14:02:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:26,134 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 362 transitions. [2024-10-13 14:02:26,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 362 transitions. [2024-10-13 14:02:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-13 14:02:26,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:26,135 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:26,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 14:02:26,336 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,SelfDestructingSolverStorable14 [2024-10-13 14:02:26,336 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_47_to_56_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:26,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1847857435, now seen corresponding path program 1 times [2024-10-13 14:02:26,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:26,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321672806] [2024-10-13 14:02:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:26,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814668337] [2024-10-13 14:02:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:26,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:26,367 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) [2024-10-13 14:02:26,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 14:02:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:26,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-13 14:02:26,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:26,590 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 [2024-10-13 14:02:26,609 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 [2024-10-13 14:02:26,817 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 [2024-10-13 14:02:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:26,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321672806] [2024-10-13 14:02:26,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814668337] [2024-10-13 14:02:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814668337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-13 14:02:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59691577] [2024-10-13 14:02:26,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:26,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 14:02:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 14:02:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:02:26,835 INFO L87 Difference]: Start difference. First operand 291 states and 362 transitions. Second operand has 15 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:27,364 INFO L93 Difference]: Finished difference Result 318 states and 364 transitions. [2024-10-13 14:02:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 14:02:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-10-13 14:02:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:27,365 INFO L225 Difference]: With dead ends: 318 [2024-10-13 14:02:27,365 INFO L226 Difference]: Without dead ends: 317 [2024-10-13 14:02:27,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-10-13 14:02:27,367 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 178 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:27,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1362 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 14:02:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-13 14:02:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 291. [2024-10-13 14:02:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.5175879396984924) internal successors, (302), 252 states have internal predecessors, (302), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 360 transitions. [2024-10-13 14:02:27,393 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 360 transitions. Word has length 39 [2024-10-13 14:02:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:27,393 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 360 transitions. [2024-10-13 14:02:27,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 360 transitions. [2024-10-13 14:02:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 14:02:27,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:27,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:27,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 14:02:27,594 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,SelfDestructingSolverStorable15 [2024-10-13 14:02:27,595 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_47_to_56_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:27,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1449005692, now seen corresponding path program 1 times [2024-10-13 14:02:27,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:27,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060393178] [2024-10-13 14:02:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:27,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149036494] [2024-10-13 14:02:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:27,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:27,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:27,638 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) [2024-10-13 14:02:27,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 14:02:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:27,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-10-13 14:02:27,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:27,891 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 [2024-10-13 14:02:27,971 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 [2024-10-13 14:02:28,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 14:02:28,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-13 14:02:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:28,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:28,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:28,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060393178] [2024-10-13 14:02:28,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:28,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149036494] [2024-10-13 14:02:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149036494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:28,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:28,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-13 14:02:28,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119649202] [2024-10-13 14:02:28,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:28,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 14:02:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 14:02:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-13 14:02:28,449 INFO L87 Difference]: Start difference. First operand 291 states and 360 transitions. Second operand has 17 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:29,155 INFO L93 Difference]: Finished difference Result 317 states and 362 transitions. [2024-10-13 14:02:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 14:02:29,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2024-10-13 14:02:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:29,157 INFO L225 Difference]: With dead ends: 317 [2024-10-13 14:02:29,157 INFO L226 Difference]: Without dead ends: 316 [2024-10-13 14:02:29,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-10-13 14:02:29,157 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 306 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:29,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1368 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 14:02:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-10-13 14:02:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 291. [2024-10-13 14:02:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.5075376884422111) internal successors, (300), 252 states have internal predecessors, (300), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 358 transitions. [2024-10-13 14:02:29,187 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 358 transitions. Word has length 40 [2024-10-13 14:02:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:29,187 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 358 transitions. [2024-10-13 14:02:29,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 14:02:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 358 transitions. [2024-10-13 14:02:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 14:02:29,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:29,188 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] [2024-10-13 14:02:29,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 14:02:29,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 14:02:29,390 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_47_to_56_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:29,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1969503549, now seen corresponding path program 1 times [2024-10-13 14:02:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339306654] [2024-10-13 14:02:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:29,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740965366] [2024-10-13 14:02:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:29,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:29,436 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) [2024-10-13 14:02:29,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 14:02:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:29,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-13 14:02:29,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:29,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:02:29,742 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 [2024-10-13 14:02:29,748 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 [2024-10-13 14:02:30,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 14:02:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:30,143 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339306654] [2024-10-13 14:02:30,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740965366] [2024-10-13 14:02:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740965366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-13 14:02:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56767531] [2024-10-13 14:02:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:30,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 14:02:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 14:02:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:02:30,145 INFO L87 Difference]: Start difference. First operand 291 states and 358 transitions. Second operand has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:30,590 INFO L93 Difference]: Finished difference Result 312 states and 358 transitions. [2024-10-13 14:02:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 14:02:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2024-10-13 14:02:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:30,593 INFO L225 Difference]: With dead ends: 312 [2024-10-13 14:02:30,593 INFO L226 Difference]: Without dead ends: 311 [2024-10-13 14:02:30,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-13 14:02:30,594 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 335 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:30,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 817 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:02:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-13 14:02:30,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 291. [2024-10-13 14:02:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.4974874371859297) internal successors, (298), 252 states have internal predecessors, (298), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:02:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 356 transitions. [2024-10-13 14:02:30,622 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 356 transitions. Word has length 41 [2024-10-13 14:02:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:30,622 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 356 transitions. [2024-10-13 14:02:30,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 356 transitions. [2024-10-13 14:02:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-13 14:02:30,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:30,624 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] [2024-10-13 14:02:30,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 14:02:30,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:30,824 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_47_to_56_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:02:30,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash 925067934, now seen corresponding path program 1 times [2024-10-13 14:02:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:30,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654372925] [2024-10-13 14:02:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:30,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:02:30,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943974080] [2024-10-13 14:02:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:02:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:30,862 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) [2024-10-13 14:02:30,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 14:02:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:31,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-10-13 14:02:31,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:02:31,096 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 [2024-10-13 14:02:31,099 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 [2024-10-13 14:02:31,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 14:02:31,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 14:02:31,158 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 [2024-10-13 14:02:31,166 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 [2024-10-13 14:02:31,277 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 27 treesize of output 19 [2024-10-13 14:02:31,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 14:02:31,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 14:02:31,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 14:02:52,111 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 26 treesize of output 14 [2024-10-13 14:02:52,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 14:02:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:02:52,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:02:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654372925] [2024-10-13 14:02:52,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:02:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943974080] [2024-10-13 14:02:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943974080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:52,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:52,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-13 14:02:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649293792] [2024-10-13 14:02:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:52,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 14:02:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 14:02:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=220, Unknown=5, NotChecked=0, Total=272 [2024-10-13 14:02:52,231 INFO L87 Difference]: Start difference. First operand 291 states and 356 transitions. Second operand has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:02:56,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:04,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:09,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 14:03:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:14,213 INFO L93 Difference]: Finished difference Result 328 states and 356 transitions. [2024-10-13 14:03:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 14:03:14,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-10-13 14:03:14,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:14,215 INFO L225 Difference]: With dead ends: 328 [2024-10-13 14:03:14,215 INFO L226 Difference]: Without dead ends: 327 [2024-10-13 14:03:14,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=110, Invalid=533, Unknown=7, NotChecked=0, Total=650 [2024-10-13 14:03:14,216 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 345 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:14,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1609 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 755 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2024-10-13 14:03:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-13 14:03:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 291. [2024-10-13 14:03:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.4924623115577889) internal successors, (297), 252 states have internal predecessors, (297), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-10-13 14:03:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 355 transitions. [2024-10-13 14:03:14,245 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 355 transitions. Word has length 42 [2024-10-13 14:03:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:14,245 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 355 transitions. [2024-10-13 14:03:14,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 14:03:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 355 transitions. [2024-10-13 14:03:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-13 14:03:14,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:14,246 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] [2024-10-13 14:03:14,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 14:03:14,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:14,447 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-13 14:03:14,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash -707338395, now seen corresponding path program 1 times [2024-10-13 14:03:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:14,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426813356] [2024-10-13 14:03:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:14,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:03:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:14,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:03:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:15,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:03:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:15,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-13 14:03:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:15,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-13 14:03:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 14:03:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426813356] [2024-10-13 14:03:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426813356] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:03:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190470435] [2024-10-13 14:03:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:15,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:15,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:15,563 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) [2024-10-13 14:03:15,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 14:03:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:15,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-13 14:03:15,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:16,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 14:03:16,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2024-10-13 14:03:16,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:03:16,086 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 [2024-10-13 14:03:16,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 14:03:16,251 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 [2024-10-13 14:03:16,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-13 14:03:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:03:24,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:03:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:03:25,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190470435] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 14:03:25,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 14:03:25,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 18] total 48 [2024-10-13 14:03:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964254728] [2024-10-13 14:03:25,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 14:03:25,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-13 14:03:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-13 14:03:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2063, Unknown=2, NotChecked=0, Total=2256 [2024-10-13 14:03:25,737 INFO L87 Difference]: Start difference. First operand 291 states and 355 transitions. Second operand has 48 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 15 states have call successors, (15), 10 states have call predecessors, (15), 12 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-13 14:03:29,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]