./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.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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.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 0b80e2ef69643fec3bd55c601a96e927d74716f095bc90a0498778af08019697 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 19:07:55,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:07:55,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:07:55,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:07:55,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:07:55,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:07:55,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:07:55,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:07:55,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:07:55,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:07:55,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:07:55,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:07:55,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:07:55,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:07:55,557 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:07:55,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:07:55,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:07:55,558 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:07:55,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:07:55,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:07:55,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:07:55,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:07:55,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:07:55,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:07:55,564 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:07:55,564 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:07:55,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:07:55,565 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:07:55,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:07:55,565 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:07:55,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:07:55,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:07:55,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:07:55,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:07:55,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:07:55,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:07:55,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:07:55,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:07:55,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:07:55,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:07:55,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:07:55,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:07:55,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:07:55,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:07:55,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b80e2ef69643fec3bd55c601a96e927d74716f095bc90a0498778af08019697 [2024-11-20 19:07:55,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:07:55,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:07:55,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:07:55,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:07:55,865 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:07:55,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c [2024-11-20 19:07:57,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:07:57,446 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:07:57,447 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c [2024-11-20 19:07:57,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4db733e6/c02a04258cc0438e947d0f755337357e/FLAG0d182735f [2024-11-20 19:07:57,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4db733e6/c02a04258cc0438e947d0f755337357e [2024-11-20 19:07:57,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:07:57,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:07:57,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:07:57,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:07:57,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:07:57,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60304631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57, skipping insertion in model container [2024-11-20 19:07:57,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:07:57,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:07:57,772 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:07:57,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:07:57,832 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:07:57,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57 WrapperNode [2024-11-20 19:07:57,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:07:57,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:07:57,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:07:57,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:07:57,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,884 INFO L138 Inliner]: procedures = 18, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2024-11-20 19:07:57,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:07:57,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:07:57,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:07:57,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:07:57,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,926 INFO L175 MemorySlicer]: Split 85 memory accesses to 14 slices as follows [2, 8, 5, 9, 6, 6, 5, 5, 6, 6, 7, 6, 7, 7]. 11 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1]. [2024-11-20 19:07:57,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:07:57,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:07:57,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:07:57,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:07:57,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (1/1) ... [2024-11-20 19:07:57,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:07:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:07:57,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 19:07:58,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 19:07:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:07:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 19:07:58,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 19:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 19:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 19:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 19:07:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 19:07:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 19:07:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-20 19:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-20 19:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-20 19:07:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-20 19:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-20 19:07:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-20 19:07:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 19:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:07:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 19:07:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-20 19:07:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-20 19:07:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 19:07:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 19:07:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 19:07:58,258 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:07:58,261 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:07:58,824 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-11-20 19:07:58,825 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:07:58,844 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:07:58,845 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 19:07:58,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:07:58 BoogieIcfgContainer [2024-11-20 19:07:58,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:07:58,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:07:58,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:07:58,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:07:58,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:07:57" (1/3) ... [2024-11-20 19:07:58,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5f8050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:07:58, skipping insertion in model container [2024-11-20 19:07:58,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:07:57" (2/3) ... [2024-11-20 19:07:58,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5f8050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:07:58, skipping insertion in model container [2024-11-20 19:07:58,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:07:58" (3/3) ... [2024-11-20 19:07:58,854 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3.c [2024-11-20 19:07:58,870 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:07:58,871 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-20 19:07:58,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:07:58,945 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;@5e9f8140, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:07:58,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-20 19:07:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 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) [2024-11-20 19:07:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-20 19:07:58,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:07:58,957 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:07:58,958 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)] === [2024-11-20 19:07:58,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:07:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash 284442776, now seen corresponding path program 1 times [2024-11-20 19:07:58,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:07:58,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83523243] [2024-11-20 19:07:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:07:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:07:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:07:59,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:07:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:07:59,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:07:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:07:59,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 19:07:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:07:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:07:59,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:07:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83523243] [2024-11-20 19:07:59,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83523243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:07:59,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:07:59,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 19:07:59,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599916228] [2024-11-20 19:07:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:07:59,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 19:07:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:07:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 19:07:59,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 19:07:59,365 INFO L87 Difference]: Start difference. First operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-20 19:07:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:07:59,848 INFO L93 Difference]: Finished difference Result 308 states and 353 transitions. [2024-11-20 19:07:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 19:07:59,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 21 [2024-11-20 19:07:59,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:07:59,866 INFO L225 Difference]: With dead ends: 308 [2024-11-20 19:07:59,866 INFO L226 Difference]: Without dead ends: 152 [2024-11-20 19:07:59,873 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 [2024-11-20 19:07:59,878 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 67 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:07:59,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:07:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-20 19:07:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2024-11-20 19:07:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 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), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 19:07:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2024-11-20 19:07:59,940 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 21 [2024-11-20 19:07:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:07:59,941 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2024-11-20 19:07:59,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-20 19:07:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2024-11-20 19:07:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-20 19:07:59,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:07:59,942 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:07:59,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 19:07:59,943 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)] === [2024-11-20 19:07:59,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:07:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2045693892, now seen corresponding path program 1 times [2024-11-20 19:07:59,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:07:59,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429516794] [2024-11-20 19:07:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:07:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:00,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:08:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:00,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:08:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:00,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 19:08:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 19:08:00,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:00,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429516794] [2024-11-20 19:08:00,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429516794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:00,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:00,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 19:08:00,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60442195] [2024-11-20 19:08:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:00,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 19:08:00,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 19:08:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:08:00,567 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2024-11-20 19:08:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:01,529 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2024-11-20 19:08:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 19:08:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 22 [2024-11-20 19:08:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:01,532 INFO L225 Difference]: With dead ends: 181 [2024-11-20 19:08:01,532 INFO L226 Difference]: Without dead ends: 152 [2024-11-20 19:08:01,533 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 [2024-11-20 19:08:01,534 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 91 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:01,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 588 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 19:08:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-20 19:08:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2024-11-20 19:08:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.65) internal successors, (132), 132 states have internal predecessors, (132), 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) [2024-11-20 19:08:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2024-11-20 19:08:01,566 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 22 [2024-11-20 19:08:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:01,566 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2024-11-20 19:08:01,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2024-11-20 19:08:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2024-11-20 19:08:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:08:01,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:01,569 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] [2024-11-20 19:08:01,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 19:08:01,570 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)] === [2024-11-20 19:08:01,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1803332426, now seen corresponding path program 1 times [2024-11-20 19:08:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103657585] [2024-11-20 19:08:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:01,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084481429] [2024-11-20 19:08:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:01,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:01,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:01,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:08:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:01,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 19:08:01,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:01,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:01,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103657585] [2024-11-20 19:08:01,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084481429] [2024-11-20 19:08:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084481429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:01,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 19:08:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066379585] [2024-11-20 19:08:01,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:01,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 19:08:01,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 19:08:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:08:01,981 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-20 19:08:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:02,252 INFO L93 Difference]: Finished difference Result 241 states and 258 transitions. [2024-11-20 19:08:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:08:02,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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 26 [2024-11-20 19:08:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:02,256 INFO L225 Difference]: With dead ends: 241 [2024-11-20 19:08:02,256 INFO L226 Difference]: Without dead ends: 237 [2024-11-20 19:08:02,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:08:02,259 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 165 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:02,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1175 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:08:02,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-20 19:08:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 202. [2024-11-20 19:08:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 124 states have (on average 1.6451612903225807) internal successors, (204), 178 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) [2024-11-20 19:08:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 245 transitions. [2024-11-20 19:08:02,294 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 245 transitions. Word has length 26 [2024-11-20 19:08:02,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:02,294 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 245 transitions. [2024-11-20 19:08:02,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-20 19:08:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 245 transitions. [2024-11-20 19:08:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:08:02,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:02,295 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] [2024-11-20 19:08:02,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:08:02,496 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 [2024-11-20 19:08:02,497 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)] === [2024-11-20 19:08:02,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:02,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1800901574, now seen corresponding path program 1 times [2024-11-20 19:08:02,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:02,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703583582] [2024-11-20 19:08:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:02,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:02,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929870890] [2024-11-20 19:08:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:02,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:02,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:08:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:02,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 19:08:02,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:02,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:02,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:02,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:02,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:02,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703583582] [2024-11-20 19:08:02,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929870890] [2024-11-20 19:08:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929870890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791870403] [2024-11-20 19:08:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:02,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:02,888 INFO L87 Difference]: Start difference. First operand 202 states and 245 transitions. Second operand has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-20 19:08:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:03,567 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2024-11-20 19:08:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:08:03,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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 26 [2024-11-20 19:08:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:03,570 INFO L225 Difference]: With dead ends: 299 [2024-11-20 19:08:03,570 INFO L226 Difference]: Without dead ends: 298 [2024-11-20 19:08:03,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:08:03,573 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 117 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:03,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 434 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 19:08:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-20 19:08:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 252. [2024-11-20 19:08:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 165 states have (on average 1.6303030303030304) internal successors, (269), 220 states have internal predecessors, (269), 26 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (28), 25 states have call predecessors, (28), 26 states have call successors, (28) [2024-11-20 19:08:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 323 transitions. [2024-11-20 19:08:03,605 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 323 transitions. Word has length 26 [2024-11-20 19:08:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:03,606 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 323 transitions. [2024-11-20 19:08:03,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-20 19:08:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 323 transitions. [2024-11-20 19:08:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 19:08:03,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:03,607 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] [2024-11-20 19:08:03,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 19:08:03,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 19:08:03,808 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_70_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)] === [2024-11-20 19:08:03,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:03,809 INFO L85 PathProgramCache]: Analyzing trace with hash -6625942, now seen corresponding path program 1 times [2024-11-20 19:08:03,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:03,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840839985] [2024-11-20 19:08:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:03,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130238613] [2024-11-20 19:08:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:03,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:03,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:03,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:08:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:04,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 19:08:04,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:04,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:04,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840839985] [2024-11-20 19:08:04,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130238613] [2024-11-20 19:08:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130238613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:04,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312781915] [2024-11-20 19:08:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:04,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:04,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:04,099 INFO L87 Difference]: Start difference. First operand 252 states and 323 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-20 19:08:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:04,258 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2024-11-20 19:08:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 27 [2024-11-20 19:08:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:04,260 INFO L225 Difference]: With dead ends: 291 [2024-11-20 19:08:04,260 INFO L226 Difference]: Without dead ends: 289 [2024-11-20 19:08:04,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:08:04,261 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 99 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:04,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 766 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-20 19:08:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 214. [2024-11-20 19:08:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 134 states have (on average 1.6044776119402986) internal successors, (215), 187 states have internal predecessors, (215), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-20 19:08:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2024-11-20 19:08:04,296 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 27 [2024-11-20 19:08:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:04,296 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2024-11-20 19:08:04,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-20 19:08:04,296 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2024-11-20 19:08:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 19:08:04,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:04,297 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] [2024-11-20 19:08:04,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 19:08:04,500 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 [2024-11-20 19:08:04,500 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)] === [2024-11-20 19:08:04,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2130642284, now seen corresponding path program 1 times [2024-11-20 19:08:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:04,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913576739] [2024-11-20 19:08:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:04,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363929977] [2024-11-20 19:08:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:04,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:04,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 19:08:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:04,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-20 19:08:04,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:04,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:04,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:05,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:05,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:08:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:05,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913576739] [2024-11-20 19:08:05,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363929977] [2024-11-20 19:08:05,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363929977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:08:05,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:08:05,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-20 19:08:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697282431] [2024-11-20 19:08:05,605 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:08:05,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 19:08:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 19:08:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-20 19:08:05,607 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2024-11-20 19:08:09,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 19:08:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:10,240 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2024-11-20 19:08:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 19:08:10,241 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 28 [2024-11-20 19:08:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:10,243 INFO L225 Difference]: With dead ends: 244 [2024-11-20 19:08:10,243 INFO L226 Difference]: Without dead ends: 243 [2024-11-20 19:08:10,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-11-20 19:08:10,248 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 346 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:10,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1421 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 445 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-20 19:08:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-20 19:08:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 218. [2024-11-20 19:08:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 137 states have (on average 1.583941605839416) internal successors, (217), 190 states have internal predecessors, (217), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-20 19:08:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 259 transitions. [2024-11-20 19:08:10,263 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 259 transitions. Word has length 28 [2024-11-20 19:08:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:10,263 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 259 transitions. [2024-11-20 19:08:10,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2024-11-20 19:08:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 259 transitions. [2024-11-20 19:08:10,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 19:08:10,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:10,264 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] [2024-11-20 19:08:10,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 19:08:10,467 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 [2024-11-20 19:08:10,468 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)] === [2024-11-20 19:08:10,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash -205404088, now seen corresponding path program 1 times [2024-11-20 19:08:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:10,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447449979] [2024-11-20 19:08:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:10,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:08:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:10,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:08:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:10,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 19:08:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:10,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447449979] [2024-11-20 19:08:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447449979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:10,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:10,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:10,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203871982] [2024-11-20 19:08:10,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:10,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:10,797 INFO L87 Difference]: Start difference. First operand 218 states and 259 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-11-20 19:08:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:11,330 INFO L93 Difference]: Finished difference Result 229 states and 274 transitions. [2024-11-20 19:08:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:08:11,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 28 [2024-11-20 19:08:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:11,333 INFO L225 Difference]: With dead ends: 229 [2024-11-20 19:08:11,333 INFO L226 Difference]: Without dead ends: 228 [2024-11-20 19:08:11,333 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 [2024-11-20 19:08:11,334 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 73 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:11,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 414 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:08:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-20 19:08:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 221. [2024-11-20 19:08:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 139 states have (on average 1.5755395683453237) internal successors, (219), 192 states have internal predecessors, (219), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-20 19:08:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 262 transitions. [2024-11-20 19:08:11,359 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 262 transitions. Word has length 28 [2024-11-20 19:08:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:11,359 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 262 transitions. [2024-11-20 19:08:11,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-11-20 19:08:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 262 transitions. [2024-11-20 19:08:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-20 19:08:11,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:11,362 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:11,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 19:08:11,362 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)] === [2024-11-20 19:08:11,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:11,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1625401405, now seen corresponding path program 1 times [2024-11-20 19:08:11,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:11,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017730771] [2024-11-20 19:08:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:11,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:11,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038532519] [2024-11-20 19:08:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:11,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:11,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:11,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:11,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 19:08:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:11,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-20 19:08:11,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:11,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:11,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:12,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 19:08:12,040 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 [2024-11-20 19:08:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:12,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:08:12,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017730771] [2024-11-20 19:08:12,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038532519] [2024-11-20 19:08:12,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038532519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:08:12,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:08:12,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-20 19:08:12,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021947780] [2024-11-20 19:08:12,681 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:08:12,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 19:08:12,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 19:08:12,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-20 19:08:12,682 INFO L87 Difference]: Start difference. First operand 221 states and 262 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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) [2024-11-20 19:08:16,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 19:08:17,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:17,595 INFO L93 Difference]: Finished difference Result 246 states and 262 transitions. [2024-11-20 19:08:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 19:08:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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 29 [2024-11-20 19:08:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:17,597 INFO L225 Difference]: With dead ends: 246 [2024-11-20 19:08:17,597 INFO L226 Difference]: Without dead ends: 245 [2024-11-20 19:08:17,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2024-11-20 19:08:17,599 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 409 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:17,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1418 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 466 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-20 19:08:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-20 19:08:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 221. [2024-11-20 19:08:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 139 states have (on average 1.5683453237410072) internal successors, (218), 192 states have internal predecessors, (218), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-20 19:08:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 261 transitions. [2024-11-20 19:08:17,615 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 261 transitions. Word has length 29 [2024-11-20 19:08:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:17,615 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 261 transitions. [2024-11-20 19:08:17,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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) [2024-11-20 19:08:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 261 transitions. [2024-11-20 19:08:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-20 19:08:17,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:17,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:17,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 19:08:17,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:17,821 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)] === [2024-11-20 19:08:17,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2072559316, now seen corresponding path program 1 times [2024-11-20 19:08:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615911563] [2024-11-20 19:08:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:17,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654608040] [2024-11-20 19:08:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:17,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:17,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:17,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 19:08:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:18,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 19:08:18,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:18,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:18,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:18,114 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:18,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:18,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615911563] [2024-11-20 19:08:18,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:18,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654608040] [2024-11-20 19:08:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654608040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:18,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:18,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997062925] [2024-11-20 19:08:18,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:18,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:18,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:18,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:18,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:18,116 INFO L87 Difference]: Start difference. First operand 221 states and 261 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-11-20 19:08:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:18,614 INFO L93 Difference]: Finished difference Result 299 states and 344 transitions. [2024-11-20 19:08:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:08:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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 29 [2024-11-20 19:08:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:18,616 INFO L225 Difference]: With dead ends: 299 [2024-11-20 19:08:18,616 INFO L226 Difference]: Without dead ends: 298 [2024-11-20 19:08:18,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:08:18,617 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 75 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:18,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 433 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:08:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-20 19:08:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 226. [2024-11-20 19:08:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.5486111111111112) internal successors, (223), 196 states have internal predecessors, (223), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (23), 21 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-20 19:08:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 266 transitions. [2024-11-20 19:08:18,635 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 266 transitions. Word has length 29 [2024-11-20 19:08:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:18,635 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 266 transitions. [2024-11-20 19:08:18,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-11-20 19:08:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 266 transitions. [2024-11-20 19:08:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 19:08:18,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:18,636 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:18,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:18,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:18,841 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)] === [2024-11-20 19:08:18,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1152163954, now seen corresponding path program 1 times [2024-11-20 19:08:18,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:18,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625410322] [2024-11-20 19:08:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:18,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222630160] [2024-11-20 19:08:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:18,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:18,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:18,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:18,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 19:08:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:19,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-20 19:08:19,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:19,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:19,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:19,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:19,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:19,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 19:08:19,339 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 [2024-11-20 19:08:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:19,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:19,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:19,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625410322] [2024-11-20 19:08:19,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:19,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222630160] [2024-11-20 19:08:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222630160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:19,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 19:08:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475263466] [2024-11-20 19:08:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:19,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 19:08:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 19:08:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:08:19,365 INFO L87 Difference]: Start difference. First operand 226 states and 266 transitions. Second operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 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) [2024-11-20 19:08:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:19,843 INFO L93 Difference]: Finished difference Result 250 states and 266 transitions. [2024-11-20 19:08:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 19:08:19,844 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 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 [2024-11-20 19:08:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:19,845 INFO L225 Difference]: With dead ends: 250 [2024-11-20 19:08:19,846 INFO L226 Difference]: Without dead ends: 249 [2024-11-20 19:08:19,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-20 19:08:19,847 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 297 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:19,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1156 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:08:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-20 19:08:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 226. [2024-11-20 19:08:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 196 states have internal predecessors, (222), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (23), 21 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-20 19:08:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2024-11-20 19:08:19,866 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 30 [2024-11-20 19:08:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:19,866 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2024-11-20 19:08:19,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 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) [2024-11-20 19:08:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2024-11-20 19:08:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 19:08:19,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:19,867 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:19,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:20,067 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 [2024-11-20 19:08:20,068 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)] === [2024-11-20 19:08:20,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:20,069 INFO L85 PathProgramCache]: Analyzing trace with hash 175170762, now seen corresponding path program 1 times [2024-11-20 19:08:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827099344] [2024-11-20 19:08:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:20,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471556340] [2024-11-20 19:08:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:20,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:20,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:20,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:20,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 19:08:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:20,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 19:08:20,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:20,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:20,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827099344] [2024-11-20 19:08:20,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471556340] [2024-11-20 19:08:20,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471556340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:20,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:20,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:08:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404706512] [2024-11-20 19:08:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:20,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:08:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:08:20,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:08:20,317 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-20 19:08:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:20,606 INFO L93 Difference]: Finished difference Result 243 states and 285 transitions. [2024-11-20 19:08:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:08:20,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 30 [2024-11-20 19:08:20,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:20,608 INFO L225 Difference]: With dead ends: 243 [2024-11-20 19:08:20,608 INFO L226 Difference]: Without dead ends: 241 [2024-11-20 19:08:20,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:08:20,609 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 88 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:20,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 241 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:08:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-20 19:08:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2024-11-20 19:08:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 152 states have (on average 1.5394736842105263) internal successors, (234), 203 states have internal predecessors, (234), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2024-11-20 19:08:20,628 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 30 [2024-11-20 19:08:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:20,628 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2024-11-20 19:08:20,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-20 19:08:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2024-11-20 19:08:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 19:08:20,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:20,629 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] [2024-11-20 19:08:20,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 19:08:20,829 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 [2024-11-20 19:08:20,830 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)] === [2024-11-20 19:08:20,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1357344161, now seen corresponding path program 1 times [2024-11-20 19:08:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45843529] [2024-11-20 19:08:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:20,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970180012] [2024-11-20 19:08:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:20,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:20,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:20,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 19:08:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:21,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-20 19:08:21,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:21,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:21,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:21,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:21,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:21,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 19:08:21,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:21,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45843529] [2024-11-20 19:08:21,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970180012] [2024-11-20 19:08:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970180012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:21,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:21,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 19:08:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305089184] [2024-11-20 19:08:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:21,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 19:08:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 19:08:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:08:21,323 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 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) [2024-11-20 19:08:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:21,731 INFO L93 Difference]: Finished difference Result 258 states and 279 transitions. [2024-11-20 19:08:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 19:08:21,732 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 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 31 [2024-11-20 19:08:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:21,733 INFO L225 Difference]: With dead ends: 258 [2024-11-20 19:08:21,733 INFO L226 Difference]: Without dead ends: 257 [2024-11-20 19:08:21,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-20 19:08:21,734 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 278 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:21,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1277 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:08:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-20 19:08:21,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 235. [2024-11-20 19:08:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 152 states have (on average 1.5328947368421053) internal successors, (233), 203 states have internal predecessors, (233), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 278 transitions. [2024-11-20 19:08:21,752 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 278 transitions. Word has length 31 [2024-11-20 19:08:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:21,752 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 278 transitions. [2024-11-20 19:08:21,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 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) [2024-11-20 19:08:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 278 transitions. [2024-11-20 19:08:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-20 19:08:21,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:21,753 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, 1, 1, 1] [2024-11-20 19:08:21,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 19:08:21,953 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 [2024-11-20 19:08:21,953 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)] === [2024-11-20 19:08:21,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash 835381580, now seen corresponding path program 1 times [2024-11-20 19:08:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154335888] [2024-11-20 19:08:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:22,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:08:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:22,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:08:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:22,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 19:08:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154335888] [2024-11-20 19:08:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154335888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976997025] [2024-11-20 19:08:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:22,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:22,246 INFO L87 Difference]: Start difference. First operand 235 states and 278 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-20 19:08:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:22,739 INFO L93 Difference]: Finished difference Result 250 states and 296 transitions. [2024-11-20 19:08:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:08:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 32 [2024-11-20 19:08:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:22,740 INFO L225 Difference]: With dead ends: 250 [2024-11-20 19:08:22,740 INFO L226 Difference]: Without dead ends: 249 [2024-11-20 19:08:22,741 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 [2024-11-20 19:08:22,741 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 80 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:22,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 484 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:08:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-20 19:08:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 241. [2024-11-20 19:08:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 158 states have (on average 1.5316455696202531) internal successors, (242), 209 states have internal predecessors, (242), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 287 transitions. [2024-11-20 19:08:22,760 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 287 transitions. Word has length 32 [2024-11-20 19:08:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:22,760 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 287 transitions. [2024-11-20 19:08:22,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-20 19:08:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 287 transitions. [2024-11-20 19:08:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-20 19:08:22,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:22,761 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] [2024-11-20 19:08:22,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 19:08:22,761 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)] === [2024-11-20 19:08:22,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash 127025328, now seen corresponding path program 1 times [2024-11-20 19:08:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:22,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3191694] [2024-11-20 19:08:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:22,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245606334] [2024-11-20 19:08:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:22,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:22,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:22,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 19:08:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:22,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 19:08:22,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:22,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:23,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:23,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3191694] [2024-11-20 19:08:23,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245606334] [2024-11-20 19:08:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245606334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:23,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:23,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:23,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607259921] [2024-11-20 19:08:23,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:23,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:23,076 INFO L87 Difference]: Start difference. First operand 241 states and 287 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-20 19:08:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:23,639 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2024-11-20 19:08:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:08:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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 33 [2024-11-20 19:08:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:23,641 INFO L225 Difference]: With dead ends: 315 [2024-11-20 19:08:23,641 INFO L226 Difference]: Without dead ends: 314 [2024-11-20 19:08:23,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:08:23,642 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 87 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:23,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 447 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:08:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-20 19:08:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 243. [2024-11-20 19:08:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.525) internal successors, (244), 211 states have internal predecessors, (244), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:23,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2024-11-20 19:08:23,663 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 33 [2024-11-20 19:08:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:23,663 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2024-11-20 19:08:23,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-20 19:08:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2024-11-20 19:08:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 19:08:23,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:23,664 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] [2024-11-20 19:08:23,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 19:08:23,864 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 [2024-11-20 19:08:23,865 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)] === [2024-11-20 19:08:23,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -248863442, now seen corresponding path program 1 times [2024-11-20 19:08:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915334944] [2024-11-20 19:08:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950107454] [2024-11-20 19:08:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:23,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:23,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:23,901 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:23,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 19:08:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:24,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 19:08:24,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:24,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:24,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915334944] [2024-11-20 19:08:24,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950107454] [2024-11-20 19:08:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950107454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:24,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:24,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 19:08:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542945365] [2024-11-20 19:08:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:24,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 19:08:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 19:08:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:08:24,217 INFO L87 Difference]: Start difference. First operand 243 states and 289 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2024-11-20 19:08:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:24,405 INFO L93 Difference]: Finished difference Result 266 states and 289 transitions. [2024-11-20 19:08:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 19:08:24,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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 38 [2024-11-20 19:08:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:24,407 INFO L225 Difference]: With dead ends: 266 [2024-11-20 19:08:24,407 INFO L226 Difference]: Without dead ends: 264 [2024-11-20 19:08:24,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-20 19:08:24,408 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 136 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:24,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1170 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-20 19:08:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 243. [2024-11-20 19:08:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.5125) internal successors, (242), 211 states have internal predecessors, (242), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2024-11-20 19:08:24,427 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 38 [2024-11-20 19:08:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:24,427 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2024-11-20 19:08:24,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2024-11-20 19:08:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2024-11-20 19:08:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-20 19:08:24,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:24,428 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:24,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:24,628 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 [2024-11-20 19:08:24,628 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)] === [2024-11-20 19:08:24,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1360402448, now seen corresponding path program 1 times [2024-11-20 19:08:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405140110] [2024-11-20 19:08:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:24,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891896190] [2024-11-20 19:08:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:24,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:24,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:24,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:24,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 19:08:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:24,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-20 19:08:24,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:24,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:24,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:24,917 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 [2024-11-20 19:08:24,973 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 [2024-11-20 19:08:25,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:25,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 19:08:25,195 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:25,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405140110] [2024-11-20 19:08:25,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891896190] [2024-11-20 19:08:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891896190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:25,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:25,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-20 19:08:25,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33232180] [2024-11-20 19:08:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:25,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 19:08:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 19:08:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-20 19:08:25,197 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 16 states, 13 states have (on average 2.3846153846153846) 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) [2024-11-20 19:08:29,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 19:08:33,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:08:37,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:08:41,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:08:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:41,743 INFO L93 Difference]: Finished difference Result 268 states and 289 transitions. [2024-11-20 19:08:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 19:08:41,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3846153846153846) 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 [2024-11-20 19:08:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:41,745 INFO L225 Difference]: With dead ends: 268 [2024-11-20 19:08:41,745 INFO L226 Difference]: Without dead ends: 267 [2024-11-20 19:08:41,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-20 19:08:41,746 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 175 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 26 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:41,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1481 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 472 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2024-11-20 19:08:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-20 19:08:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 243. [2024-11-20 19:08:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.50625) internal successors, (241), 211 states have internal predecessors, (241), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2024-11-20 19:08:41,768 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 40 [2024-11-20 19:08:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:41,768 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2024-11-20 19:08:41,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3846153846153846) 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) [2024-11-20 19:08:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2024-11-20 19:08:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 19:08:41,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:41,769 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] [2024-11-20 19:08:41,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:41,970 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 [2024-11-20 19:08:41,970 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)] === [2024-11-20 19:08:41,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -777197017, now seen corresponding path program 1 times [2024-11-20 19:08:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:41,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950091324] [2024-11-20 19:08:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:41,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:42,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929653258] [2024-11-20 19:08:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:42,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:42,012 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:42,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 19:08:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:42,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-20 19:08:42,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:42,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:42,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:42,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 19:08:42,809 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 [2024-11-20 19:08:42,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 19:08:42,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:42,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:42,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950091324] [2024-11-20 19:08:42,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:42,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929653258] [2024-11-20 19:08:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929653258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:42,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:42,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-20 19:08:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938524765] [2024-11-20 19:08:42,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:42,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:08:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:08:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:08:42,848 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 17 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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) [2024-11-20 19:08:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:43,518 INFO L93 Difference]: Finished difference Result 267 states and 288 transitions. [2024-11-20 19:08:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 19:08:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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 41 [2024-11-20 19:08:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:43,520 INFO L225 Difference]: With dead ends: 267 [2024-11-20 19:08:43,520 INFO L226 Difference]: Without dead ends: 266 [2024-11-20 19:08:43,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-20 19:08:43,521 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 354 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:43,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1141 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:08:43,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-20 19:08:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 243. [2024-11-20 19:08:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.5) internal successors, (240), 211 states have internal predecessors, (240), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 285 transitions. [2024-11-20 19:08:43,562 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 285 transitions. Word has length 41 [2024-11-20 19:08:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:43,563 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 285 transitions. [2024-11-20 19:08:43,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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) [2024-11-20 19:08:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 285 transitions. [2024-11-20 19:08:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-20 19:08:43,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:43,563 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] [2024-11-20 19:08:43,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:43,764 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 [2024-11-20 19:08:43,764 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)] === [2024-11-20 19:08:43,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1676696306, now seen corresponding path program 1 times [2024-11-20 19:08:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191146087] [2024-11-20 19:08:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:43,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034928430] [2024-11-20 19:08:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:43,799 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:43,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 19:08:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:44,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-20 19:08:44,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:44,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:44,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:44,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:44,433 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 [2024-11-20 19:08:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:44,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191146087] [2024-11-20 19:08:44,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034928430] [2024-11-20 19:08:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034928430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:44,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 19:08:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670167627] [2024-11-20 19:08:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:44,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 19:08:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:44,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 19:08:44,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:08:44,461 INFO L87 Difference]: Start difference. First operand 243 states and 285 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 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) [2024-11-20 19:08:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:45,076 INFO L93 Difference]: Finished difference Result 262 states and 285 transitions. [2024-11-20 19:08:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:08:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 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 [2024-11-20 19:08:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:45,078 INFO L225 Difference]: With dead ends: 262 [2024-11-20 19:08:45,078 INFO L226 Difference]: Without dead ends: 261 [2024-11-20 19:08:45,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-20 19:08:45,079 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 329 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:45,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1259 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:08:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-20 19:08:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 243. [2024-11-20 19:08:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.49375) internal successors, (239), 211 states have internal predecessors, (239), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 284 transitions. [2024-11-20 19:08:45,102 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 284 transitions. Word has length 42 [2024-11-20 19:08:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:45,103 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 284 transitions. [2024-11-20 19:08:45,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 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) [2024-11-20 19:08:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 284 transitions. [2024-11-20 19:08:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 19:08:45,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:45,103 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:45,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 19:08:45,304 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 [2024-11-20 19:08:45,304 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)] === [2024-11-20 19:08:45,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash 437977993, now seen corresponding path program 1 times [2024-11-20 19:08:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:45,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173312543] [2024-11-20 19:08:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915826567] [2024-11-20 19:08:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:45,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:45,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:45,339 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:45,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 19:08:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:45,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-20 19:08:45,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:45,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:45,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:45,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:46,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:08:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:46,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173312543] [2024-11-20 19:08:46,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915826567] [2024-11-20 19:08:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915826567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 19:08:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741866987] [2024-11-20 19:08:46,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:46,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 19:08:46,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 19:08:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:08:46,041 INFO L87 Difference]: Start difference. First operand 243 states and 284 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-20 19:08:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:46,540 INFO L93 Difference]: Finished difference Result 261 states and 284 transitions. [2024-11-20 19:08:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:08:46,541 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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 43 [2024-11-20 19:08:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:46,542 INFO L225 Difference]: With dead ends: 261 [2024-11-20 19:08:46,542 INFO L226 Difference]: Without dead ends: 260 [2024-11-20 19:08:46,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-20 19:08:46,543 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 285 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:46,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 905 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:08:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-20 19:08:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 243. [2024-11-20 19:08:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.4875) internal successors, (238), 211 states have internal predecessors, (238), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-20 19:08:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 283 transitions. [2024-11-20 19:08:46,566 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 283 transitions. Word has length 43 [2024-11-20 19:08:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:46,567 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 283 transitions. [2024-11-20 19:08:46,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-20 19:08:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 283 transitions. [2024-11-20 19:08:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 19:08:46,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:46,568 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:46,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 19:08:46,768 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 [2024-11-20 19:08:46,769 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)] === [2024-11-20 19:08:46,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:46,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1247420923, now seen corresponding path program 1 times [2024-11-20 19:08:46,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:46,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502728157] [2024-11-20 19:08:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:08:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:08:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 19:08:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 19:08:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-20 19:08:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:08:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502728157] [2024-11-20 19:08:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502728157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:08:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841798107] [2024-11-20 19:08:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:47,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:47,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:47,778 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:47,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 19:08:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:47,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-20 19:08:47,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:48,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:48,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 19:08:48,174 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 26 treesize of output 26 [2024-11-20 19:08:48,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:48,183 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 [2024-11-20 19:08:48,340 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 [2024-11-20 19:08:48,415 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 [2024-11-20 19:08:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:56,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:08:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:08:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841798107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:08:57,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:08:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 18] total 48 [2024-11-20 19:08:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367260028] [2024-11-20 19:08:57,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:08:57,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-20 19:08:57,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-20 19:08:57,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2063, Unknown=2, NotChecked=0, Total=2256 [2024-11-20 19:08:57,859 INFO L87 Difference]: Start difference. First operand 243 states and 283 transitions. Second operand has 48 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 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) [2024-11-20 19:09:01,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 19:09:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:04,453 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2024-11-20 19:09:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 19:09:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 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) Word has length 43 [2024-11-20 19:09:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:04,455 INFO L225 Difference]: With dead ends: 287 [2024-11-20 19:09:04,456 INFO L226 Difference]: Without dead ends: 258 [2024-11-20 19:09:04,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=436, Invalid=3852, Unknown=2, NotChecked=0, Total=4290 [2024-11-20 19:09:04,458 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 471 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:04,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1216 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2418 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2024-11-20 19:09:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-20 19:09:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2024-11-20 19:09:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 163 states have (on average 1.49079754601227) internal successors, (243), 215 states have internal predecessors, (243), 21 states have call successors, (21), 11 states have call predecessors, (21), 14 states have return successors, (29), 23 states have call predecessors, (29), 21 states have call successors, (29) [2024-11-20 19:09:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 293 transitions. [2024-11-20 19:09:04,489 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 293 transitions. Word has length 43 [2024-11-20 19:09:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:04,491 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 293 transitions. [2024-11-20 19:09:04,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 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) [2024-11-20 19:09:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 293 transitions. [2024-11-20 19:09:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 19:09:04,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:04,492 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:04,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 19:09:04,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:04,692 INFO L396 AbstractCegarLoop]: === Iteration 21 === 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)] === [2024-11-20 19:09:04,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1925717064, now seen corresponding path program 1 times [2024-11-20 19:09:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475101333] [2024-11-20 19:09:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913140938] [2024-11-20 19:09:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:04,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:04,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:04,742 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:04,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 19:09:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:05,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-20 19:09:05,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:05,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:05,086 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 [2024-11-20 19:09:05,091 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 [2024-11-20 19:09:05,167 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 [2024-11-20 19:09:05,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:05,290 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 [2024-11-20 19:09:05,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:09:05,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:09:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 19:09:05,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:06,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475101333] [2024-11-20 19:09:06,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:06,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913140938] [2024-11-20 19:09:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913140938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:06,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:09:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-20 19:09:06,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252892118] [2024-11-20 19:09:06,290 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:06,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 19:09:06,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 19:09:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-11-20 19:09:06,293 INFO L87 Difference]: Start difference. First operand 248 states and 293 transitions. Second operand has 18 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 19:09:10,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 19:09:14,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:09:18,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:09:22,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:09:27,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-20 19:09:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:27,440 INFO L93 Difference]: Finished difference Result 375 states and 419 transitions. [2024-11-20 19:09:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 19:09:27,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-20 19:09:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:27,442 INFO L225 Difference]: With dead ends: 375 [2024-11-20 19:09:27,442 INFO L226 Difference]: Without dead ends: 372 [2024-11-20 19:09:27,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 19:09:27,443 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 284 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:27,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2575 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 833 Invalid, 5 Unknown, 0 Unchecked, 20.9s Time] [2024-11-20 19:09:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-20 19:09:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 311. [2024-11-20 19:09:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 211 states have (on average 1.5260663507109005) internal successors, (322), 268 states have internal predecessors, (322), 31 states have call successors, (31), 14 states have call predecessors, (31), 19 states have return successors, (45), 31 states have call predecessors, (45), 31 states have call successors, (45) [2024-11-20 19:09:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 398 transitions. [2024-11-20 19:09:27,477 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 398 transitions. Word has length 45 [2024-11-20 19:09:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:27,477 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 398 transitions. [2024-11-20 19:09:27,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 19:09:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 398 transitions. [2024-11-20 19:09:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 19:09:27,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,478 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 19:09:27,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:27,683 INFO L396 AbstractCegarLoop]: === Iteration 22 === 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)] === [2024-11-20 19:09:27,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1923286212, now seen corresponding path program 1 times [2024-11-20 19:09:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368865457] [2024-11-20 19:09:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat