./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 19:40:56,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 19:40:56,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 19:40:56,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 19:40:56,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 19:40:56,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 19:40:56,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 19:40:56,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 19:40:56,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 19:40:56,248 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 19:40:56,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 19:40:56,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 19:40:56,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 19:40:56,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 19:40:56,249 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 19:40:56,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 19:40:56,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 19:40:56,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 19:40:56,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 19:40:56,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 19:40:56,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 19:40:56,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 19:40:56,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 19:40:56,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 19:40:56,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 19:40:56,254 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 19:40:56,254 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 19:40:56,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 19:40:56,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 19:40:56,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 19:40:56,255 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 19:40:56,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 19:40:56,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 19:40:56,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 19:40:56,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 19:40:56,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 19:40:56,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 19:40:56,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 19:40:56,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 19:40:56,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 19:40:56,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 19:40:56,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 19:40:56,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 19:40:56,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 19:40:56,263 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2024-11-10 19:40:56,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 19:40:56,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 19:40:56,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 19:40:56,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 19:40:56,471 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 19:40:56,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-10 19:40:57,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 19:40:57,867 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 19:40:57,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-10 19:40:57,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ccf4bc8/0923a7610aca43d69fa84fe3ceed1f51/FLAG34e2b132a [2024-11-10 19:40:58,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ccf4bc8/0923a7610aca43d69fa84fe3ceed1f51 [2024-11-10 19:40:58,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 19:40:58,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 19:40:58,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 19:40:58,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 19:40:58,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 19:40:58,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6651f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58, skipping insertion in model container [2024-11-10 19:40:58,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 19:40:58,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 19:40:58,573 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 19:40:58,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 19:40:58,669 INFO L204 MainTranslator]: Completed translation [2024-11-10 19:40:58,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58 WrapperNode [2024-11-10 19:40:58,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 19:40:58,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 19:40:58,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 19:40:58,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 19:40:58,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,740 INFO L138 Inliner]: procedures = 18, calls = 128, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2024-11-10 19:40:58,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 19:40:58,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 19:40:58,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 19:40:58,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 19:40:58,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,815 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 6, 6, 5, 7, 9, 6, 5, 6, 6, 5, 7, 7]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1]. [2024-11-10 19:40:58,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,834 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 19:40:58,855 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 19:40:58,855 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 19:40:58,855 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 19:40:58,855 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (1/1) ... [2024-11-10 19:40:58,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 19:40:58,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:40:58,893 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) [2024-11-10 19:40:58,895 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 [2024-11-10 19:40:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 19:40:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-10 19:40:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-10 19:40:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 19:40:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-10 19:40:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-10 19:40:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-10 19:40:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-10 19:40:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-10 19:40:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-10 19:40:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-10 19:40:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-10 19:40:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-10 19:40:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-10 19:40:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 19:40:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-10 19:40:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 19:40:58,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 19:40:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 19:40:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 19:40:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 19:40:59,036 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 19:40:59,038 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 19:40:59,485 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L136: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#p~0#1.base, main_~#p~0#1.offset);havoc main_~#p~0#1.base, main_~#p~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2024-11-10 19:40:59,524 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-11-10 19:40:59,524 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 19:40:59,542 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 19:40:59,542 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 19:40:59,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 07:40:59 BoogieIcfgContainer [2024-11-10 19:40:59,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 19:40:59,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 19:40:59,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 19:40:59,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 19:40:59,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:40:58" (1/3) ... [2024-11-10 19:40:59,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7229ad19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:40:59, skipping insertion in model container [2024-11-10 19:40:59,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:40:58" (2/3) ... [2024-11-10 19:40:59,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7229ad19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:40:59, skipping insertion in model container [2024-11-10 19:40:59,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 07:40:59" (3/3) ... [2024-11-10 19:40:59,549 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-11-10 19:40:59,561 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 19:40:59,562 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-10 19:40:59,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 19:40:59,614 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;@5e15adaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 19:40:59,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-10 19:40:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 97 states have (on average 1.597938144329897) internal successors, (155), 150 states have internal predecessors, (155), 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) [2024-11-10 19:40:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 19:40:59,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:40:59,627 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:40:59,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_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)] === [2024-11-10 19:40:59,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:40:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1344536939, now seen corresponding path program 1 times [2024-11-10 19:40:59,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:40:59,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061065848] [2024-11-10 19:40:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:40:59,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:40:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:40:59,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 19:40:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:40:59,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-10 19:40:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:40:59,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 19:40:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:40:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:40:59,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:40:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061065848] [2024-11-10 19:40:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061065848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:40:59,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:40:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 19:40:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898263527] [2024-11-10 19:40:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:40:59,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 19:40:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:40:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 19:40:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 19:40:59,955 INFO L87 Difference]: Start difference. First operand has 166 states, 97 states have (on average 1.597938144329897) internal successors, (155), 150 states have internal predecessors, (155), 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) [2024-11-10 19:41:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:00,411 INFO L93 Difference]: Finished difference Result 334 states and 379 transitions. [2024-11-10 19:41:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 19:41:00,414 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 [2024-11-10 19:41:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:00,426 INFO L225 Difference]: With dead ends: 334 [2024-11-10 19:41:00,430 INFO L226 Difference]: Without dead ends: 164 [2024-11-10 19:41:00,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 19:41:00,439 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 71 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:00,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 144 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 19:41:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-10 19:41:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2024-11-10 19:41:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 143 states have internal predecessors, (143), 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) [2024-11-10 19:41:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 167 transitions. [2024-11-10 19:41:00,499 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 167 transitions. Word has length 21 [2024-11-10 19:41:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:00,499 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 167 transitions. [2024-11-10 19:41:00,499 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) [2024-11-10 19:41:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 167 transitions. [2024-11-10 19:41:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 19:41:00,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:00,506 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:00,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 19:41:00,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13ASSERT_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)] === [2024-11-10 19:41:00,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2120865012, now seen corresponding path program 1 times [2024-11-10 19:41:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:00,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466976089] [2024-11-10 19:41:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:00,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:01,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 19:41:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:01,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-10 19:41:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:01,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 19:41:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 19:41:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466976089] [2024-11-10 19:41:01,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466976089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:01,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:01,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 19:41:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369853482] [2024-11-10 19:41:01,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:01,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 19:41:01,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 19:41:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-10 19:41:01,260 INFO L87 Difference]: Start difference. First operand 158 states and 167 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) [2024-11-10 19:41:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:02,334 INFO L93 Difference]: Finished difference Result 196 states and 207 transitions. [2024-11-10 19:41:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 19:41:02,335 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 [2024-11-10 19:41:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:02,336 INFO L225 Difference]: With dead ends: 196 [2024-11-10 19:41:02,336 INFO L226 Difference]: Without dead ends: 164 [2024-11-10 19:41:02,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-10 19:41:02,338 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 98 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:02,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 659 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 19:41:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-10 19:41:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2024-11-10 19:41:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 92 states have (on average 1.565217391304348) internal successors, (144), 144 states have internal predecessors, (144), 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) [2024-11-10 19:41:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2024-11-10 19:41:02,350 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 22 [2024-11-10 19:41:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:02,350 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2024-11-10 19:41:02,351 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) [2024-11-10 19:41:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2024-11-10 19:41:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 19:41:02,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:02,352 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] [2024-11-10 19:41:02,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 19:41:02,352 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_47_to_56_0Err23ASSERT_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)] === [2024-11-10 19:41:02,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1053991692, now seen corresponding path program 1 times [2024-11-10 19:41:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:02,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807747144] [2024-11-10 19:41:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402044902] [2024-11-10 19:41:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:02,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:02,398 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) [2024-11-10 19:41:02,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 19:41:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:02,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 19:41:02,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:02,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 19:41:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:02,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:02,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:02,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807747144] [2024-11-10 19:41:02,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:02,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402044902] [2024-11-10 19:41:02,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402044902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:02,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:02,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 19:41:02,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001939407] [2024-11-10 19:41:02,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:02,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 19:41:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 19:41:02,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-10 19:41:02,704 INFO L87 Difference]: Start difference. First operand 160 states and 169 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) [2024-11-10 19:41:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:03,006 INFO L93 Difference]: Finished difference Result 261 states and 278 transitions. [2024-11-10 19:41:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 19:41:03,007 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 [2024-11-10 19:41:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:03,008 INFO L225 Difference]: With dead ends: 261 [2024-11-10 19:41:03,008 INFO L226 Difference]: Without dead ends: 257 [2024-11-10 19:41:03,009 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 [2024-11-10 19:41:03,009 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 182 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1283 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 [2024-11-10 19:41:03,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1283 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 19:41:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-10 19:41:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 221. [2024-11-10 19:41:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 143 states have (on average 1.5594405594405594) internal successors, (223), 197 states have internal predecessors, (223), 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) [2024-11-10 19:41:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 264 transitions. [2024-11-10 19:41:03,024 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 264 transitions. Word has length 26 [2024-11-10 19:41:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:03,024 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 264 transitions. [2024-11-10 19:41:03,024 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) [2024-11-10 19:41:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 264 transitions. [2024-11-10 19:41:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 19:41:03,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:03,025 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] [2024-11-10 19:41:03,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 19:41:03,228 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 [2024-11-10 19:41:03,228 INFO L396 AbstractCegarLoop]: === Iteration 4 === 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)] === [2024-11-10 19:41:03,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1057777296, now seen corresponding path program 1 times [2024-11-10 19:41:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50610118] [2024-11-10 19:41:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223953018] [2024-11-10 19:41:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:03,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:03,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:03,271 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) [2024-11-10 19:41:03,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 19:41:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:03,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 19:41:03,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:03,397 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 [2024-11-10 19:41:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:03,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:03,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50610118] [2024-11-10 19:41:03,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:03,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223953018] [2024-11-10 19:41:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223953018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 19:41:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792482224] [2024-11-10 19:41:03,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:03,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 19:41:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 19:41:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 19:41:03,478 INFO L87 Difference]: Start difference. First operand 221 states and 264 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2024-11-10 19:41:03,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:03,584 INFO L93 Difference]: Finished difference Result 261 states and 277 transitions. [2024-11-10 19:41:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 19:41:03,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 [2024-11-10 19:41:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:03,586 INFO L225 Difference]: With dead ends: 261 [2024-11-10 19:41:03,586 INFO L226 Difference]: Without dead ends: 259 [2024-11-10 19:41:03,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-10 19:41:03,587 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 110 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 773 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 [2024-11-10 19:41:03,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 773 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 19:41:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-10 19:41:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 228. [2024-11-10 19:41:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 149 states have (on average 1.5369127516778522) internal successors, (229), 202 states have internal predecessors, (229), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-10 19:41:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2024-11-10 19:41:03,599 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 26 [2024-11-10 19:41:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:03,599 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2024-11-10 19:41:03,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-10 19:41:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2024-11-10 19:41:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 19:41:03,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:03,600 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] [2024-11-10 19:41:03,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 19:41:03,800 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 [2024-11-10 19:41:03,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_70_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)] === [2024-11-10 19:41:03,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1383269454, now seen corresponding path program 1 times [2024-11-10 19:41:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:03,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493190652] [2024-11-10 19:41:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:04,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 19:41:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:04,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-10 19:41:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:04,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 19:41:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:04,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:04,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493190652] [2024-11-10 19:41:04,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493190652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:04,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:04,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 19:41:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435462353] [2024-11-10 19:41:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:04,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 19:41:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 19:41:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 19:41:04,119 INFO L87 Difference]: Start difference. First operand 228 states and 270 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) [2024-11-10 19:41:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:04,827 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2024-11-10 19:41:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 19:41:04,827 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 [2024-11-10 19:41:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:04,829 INFO L225 Difference]: With dead ends: 240 [2024-11-10 19:41:04,829 INFO L226 Difference]: Without dead ends: 239 [2024-11-10 19:41:04,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-10 19:41:04,829 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 79 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:04,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 454 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 19:41:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-10 19:41:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2024-11-10 19:41:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.5333333333333334) internal successors, (230), 203 states have internal predecessors, (230), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-10 19:41:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 271 transitions. [2024-11-10 19:41:04,847 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 271 transitions. Word has length 28 [2024-11-10 19:41:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:04,847 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 271 transitions. [2024-11-10 19:41:04,847 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) [2024-11-10 19:41:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 271 transitions. [2024-11-10 19:41:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 19:41:04,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:04,848 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] [2024-11-10 19:41:04,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 19:41:04,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_47_to_56_0Err21ASSERT_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)] === [2024-11-10 19:41:04,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1039436426, now seen corresponding path program 1 times [2024-11-10 19:41:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539722302] [2024-11-10 19:41:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:04,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935049405] [2024-11-10 19:41:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:04,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:04,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:04,883 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) [2024-11-10 19:41:04,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 19:41:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:05,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-10 19:41:05,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:05,043 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 [2024-11-10 19:41:05,145 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 [2024-11-10 19:41:05,287 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 [2024-11-10 19:41:05,292 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 [2024-11-10 19:41:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 19:41:05,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:41:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539722302] [2024-11-10 19:41:05,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935049405] [2024-11-10 19:41:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935049405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 19:41:05,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-10 19:41:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-10 19:41:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791132668] [2024-11-10 19:41:05,787 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-10 19:41:05,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 19:41:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 19:41:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-10 19:41:05,788 INFO L87 Difference]: Start difference. First operand 229 states and 271 transitions. Second operand has 15 states, 12 states have (on average 1.8333333333333333) 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) [2024-11-10 19:41:09,798 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] [2024-11-10 19:41:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:10,294 INFO L93 Difference]: Finished difference Result 259 states and 274 transitions. [2024-11-10 19:41:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 19:41:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.8333333333333333) 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 [2024-11-10 19:41:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:10,296 INFO L225 Difference]: With dead ends: 259 [2024-11-10 19:41:10,296 INFO L226 Difference]: Without dead ends: 258 [2024-11-10 19:41:10,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-11-10 19:41:10,297 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 305 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:10,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1696 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-10 19:41:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-10 19:41:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 233. [2024-11-10 19:41:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 153 states have (on average 1.5163398692810457) internal successors, (232), 206 states have internal predecessors, (232), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-10 19:41:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2024-11-10 19:41:10,315 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 29 [2024-11-10 19:41:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:10,315 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2024-11-10 19:41:10,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.8333333333333333) 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) [2024-11-10 19:41:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2024-11-10 19:41:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 19:41:10,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:10,315 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] [2024-11-10 19:41:10,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 19:41:10,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:10,520 INFO L396 AbstractCegarLoop]: === Iteration 7 === 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)] === [2024-11-10 19:41:10,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash -68319835, now seen corresponding path program 1 times [2024-11-10 19:41:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:10,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543146602] [2024-11-10 19:41:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:10,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924291466] [2024-11-10 19:41:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:10,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:10,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:10,573 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) [2024-11-10 19:41:10,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 19:41:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:10,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 19:41:10,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:10,730 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 [2024-11-10 19:41:10,747 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 [2024-11-10 19:41:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:10,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543146602] [2024-11-10 19:41:10,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924291466] [2024-11-10 19:41:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924291466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 19:41:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649384311] [2024-11-10 19:41:10,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:10,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 19:41:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 19:41:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 19:41:10,829 INFO L87 Difference]: Start difference. First operand 233 states and 273 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) [2024-11-10 19:41:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:11,575 INFO L93 Difference]: Finished difference Result 325 states and 371 transitions. [2024-11-10 19:41:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 19:41:11,575 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 [2024-11-10 19:41:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:11,577 INFO L225 Difference]: With dead ends: 325 [2024-11-10 19:41:11,577 INFO L226 Difference]: Without dead ends: 324 [2024-11-10 19:41:11,577 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 [2024-11-10 19:41:11,577 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 84 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:11,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 463 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 19:41:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-10 19:41:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 243. [2024-11-10 19:41:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 162 states have (on average 1.4938271604938271) internal successors, (242), 214 states have internal predecessors, (242), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-10 19:41:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 284 transitions. [2024-11-10 19:41:11,596 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 284 transitions. Word has length 29 [2024-11-10 19:41:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:11,596 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 284 transitions. [2024-11-10 19:41:11,596 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) [2024-11-10 19:41:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 284 transitions. [2024-11-10 19:41:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 19:41:11,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:11,598 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] [2024-11-10 19:41:11,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:11,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:11,802 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_47_to_56_0Err20ASSERT_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)] === [2024-11-10 19:41:11,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2137209135, now seen corresponding path program 1 times [2024-11-10 19:41:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107025637] [2024-11-10 19:41:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132271497] [2024-11-10 19:41:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:11,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:11,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:11,877 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) [2024-11-10 19:41:11,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 19:41:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:12,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-10 19:41:12,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:12,056 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 [2024-11-10 19:41:12,119 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 [2024-11-10 19:41:12,268 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 [2024-11-10 19:41:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:12,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107025637] [2024-11-10 19:41:12,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132271497] [2024-11-10 19:41:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132271497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:12,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 19:41:12,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220579997] [2024-11-10 19:41:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:12,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 19:41:12,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 19:41:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-10 19:41:12,299 INFO L87 Difference]: Start difference. First operand 243 states and 284 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 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) [2024-11-10 19:41:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:12,732 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2024-11-10 19:41:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 19:41:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 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 [2024-11-10 19:41:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:12,733 INFO L225 Difference]: With dead ends: 268 [2024-11-10 19:41:12,733 INFO L226 Difference]: Without dead ends: 267 [2024-11-10 19:41:12,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-10 19:41:12,749 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 302 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:12,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1179 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 19:41:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-10 19:41:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 243. [2024-11-10 19:41:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 162 states have (on average 1.4876543209876543) internal successors, (241), 214 states have internal predecessors, (241), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-10 19:41:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 283 transitions. [2024-11-10 19:41:12,776 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 283 transitions. Word has length 30 [2024-11-10 19:41:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:12,776 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 283 transitions. [2024-11-10 19:41:12,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 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) [2024-11-10 19:41:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 283 transitions. [2024-11-10 19:41:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 19:41:12,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:12,777 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] [2024-11-10 19:41:12,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:12,977 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 [2024-11-10 19:41:12,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_47_to_56_0Err19ASSERT_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)] === [2024-11-10 19:41:12,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1828973720, now seen corresponding path program 1 times [2024-11-10 19:41:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987573761] [2024-11-10 19:41:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:13,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014330131] [2024-11-10 19:41:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:13,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:13,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:13,038 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) [2024-11-10 19:41:13,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 19:41:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:13,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-10 19:41:13,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:13,204 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 [2024-11-10 19:41:13,245 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 [2024-11-10 19:41:13,250 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 [2024-11-10 19:41:13,404 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 [2024-11-10 19:41:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:13,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987573761] [2024-11-10 19:41:13,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014330131] [2024-11-10 19:41:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014330131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 19:41:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251126184] [2024-11-10 19:41:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:13,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 19:41:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 19:41:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-10 19:41:13,425 INFO L87 Difference]: Start difference. First operand 243 states and 283 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) [2024-11-10 19:41:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:13,838 INFO L93 Difference]: Finished difference Result 267 states and 283 transitions. [2024-11-10 19:41:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 19:41:13,838 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 [2024-11-10 19:41:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:13,840 INFO L225 Difference]: With dead ends: 267 [2024-11-10 19:41:13,840 INFO L226 Difference]: Without dead ends: 266 [2024-11-10 19:41:13,840 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 [2024-11-10 19:41:13,841 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 313 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:13,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1386 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 19:41:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-10 19:41:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 243. [2024-11-10 19:41:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 162 states have (on average 1.4814814814814814) internal successors, (240), 214 states have internal predecessors, (240), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-10 19:41:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 282 transitions. [2024-11-10 19:41:13,853 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 282 transitions. Word has length 31 [2024-11-10 19:41:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:13,853 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 282 transitions. [2024-11-10 19:41:13,853 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) [2024-11-10 19:41:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 282 transitions. [2024-11-10 19:41:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 19:41:13,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:13,854 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] [2024-11-10 19:41:13,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:14,054 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 [2024-11-10 19:41:14,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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)] === [2024-11-10 19:41:14,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1230850397, now seen corresponding path program 1 times [2024-11-10 19:41:14,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:14,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590662881] [2024-11-10 19:41:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126632404] [2024-11-10 19:41:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:14,102 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) [2024-11-10 19:41:14,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 19:41:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:14,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 19:41:14,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:14,244 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 [2024-11-10 19:41:14,263 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 [2024-11-10 19:41:14,316 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 [2024-11-10 19:41:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:14,326 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:14,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:14,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590662881] [2024-11-10 19:41:14,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:14,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126632404] [2024-11-10 19:41:14,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126632404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:14,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:14,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 19:41:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130399628] [2024-11-10 19:41:14,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:14,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 19:41:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 19:41:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 19:41:14,328 INFO L87 Difference]: Start difference. First operand 243 states and 282 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-11-10 19:41:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:14,933 INFO L93 Difference]: Finished difference Result 340 states and 387 transitions. [2024-11-10 19:41:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 19:41:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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 31 [2024-11-10 19:41:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:14,935 INFO L225 Difference]: With dead ends: 340 [2024-11-10 19:41:14,935 INFO L226 Difference]: Without dead ends: 339 [2024-11-10 19:41:14,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-10 19:41:14,935 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 136 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:14,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 486 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 19:41:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-10 19:41:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 245. [2024-11-10 19:41:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 164 states have (on average 1.475609756097561) internal successors, (242), 216 states have internal predecessors, (242), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-10 19:41:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 284 transitions. [2024-11-10 19:41:14,949 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 284 transitions. Word has length 31 [2024-11-10 19:41:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:14,949 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 284 transitions. [2024-11-10 19:41:14,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-11-10 19:41:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 284 transitions. [2024-11-10 19:41:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 19:41:14,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:14,950 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] [2024-11-10 19:41:14,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 19:41:15,153 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 [2024-11-10 19:41:15,154 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_47_to_56_0Err18ASSERT_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)] === [2024-11-10 19:41:15,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash -863610449, now seen corresponding path program 1 times [2024-11-10 19:41:15,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:15,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359503919] [2024-11-10 19:41:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:15,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070492185] [2024-11-10 19:41:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:15,183 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) [2024-11-10 19:41:15,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 19:41:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:15,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-10 19:41:15,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:15,336 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 [2024-11-10 19:41:15,370 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 [2024-11-10 19:41:15,374 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 [2024-11-10 19:41:15,541 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 [2024-11-10 19:41:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:15,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359503919] [2024-11-10 19:41:15,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070492185] [2024-11-10 19:41:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070492185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:15,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:15,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 19:41:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670909219] [2024-11-10 19:41:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:15,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 19:41:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 19:41:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-10 19:41:15,586 INFO L87 Difference]: Start difference. First operand 245 states and 284 transitions. Second operand has 13 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 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) [2024-11-10 19:41:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:16,083 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2024-11-10 19:41:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 19:41:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 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 32 [2024-11-10 19:41:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:16,084 INFO L225 Difference]: With dead ends: 268 [2024-11-10 19:41:16,084 INFO L226 Difference]: Without dead ends: 267 [2024-11-10 19:41:16,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-10 19:41:16,085 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 304 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:16,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1399 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 19:41:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-10 19:41:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2024-11-10 19:41:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 164 states have (on average 1.4695121951219512) internal successors, (241), 216 states have internal predecessors, (241), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-10 19:41:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 283 transitions. [2024-11-10 19:41:16,097 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 283 transitions. Word has length 32 [2024-11-10 19:41:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:16,097 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 283 transitions. [2024-11-10 19:41:16,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 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) [2024-11-10 19:41:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 283 transitions. [2024-11-10 19:41:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 19:41:16,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:16,097 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] [2024-11-10 19:41:16,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 19:41:16,298 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 [2024-11-10 19:41:16,298 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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)] === [2024-11-10 19:41:16,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 498343403, now seen corresponding path program 1 times [2024-11-10 19:41:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:16,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515318362] [2024-11-10 19:41:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:16,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:16,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806919718] [2024-11-10 19:41:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:16,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:16,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:16,333 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) [2024-11-10 19:41:16,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 19:41:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:16,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 19:41:16,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:16,482 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 [2024-11-10 19:41:16,500 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 [2024-11-10 19:41:16,555 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 [2024-11-10 19:41:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:16,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:16,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515318362] [2024-11-10 19:41:16,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806919718] [2024-11-10 19:41:16,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806919718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:16,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:16,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 19:41:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048157960] [2024-11-10 19:41:16,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:16,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 19:41:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 19:41:16,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 19:41:16,567 INFO L87 Difference]: Start difference. First operand 245 states and 283 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-10 19:41:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:17,229 INFO L93 Difference]: Finished difference Result 339 states and 384 transitions. [2024-11-10 19:41:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 19:41:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-10 19:41:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:17,231 INFO L225 Difference]: With dead ends: 339 [2024-11-10 19:41:17,231 INFO L226 Difference]: Without dead ends: 338 [2024-11-10 19:41:17,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-10 19:41:17,232 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 132 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:17,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 498 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 19:41:17,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-10 19:41:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 246. [2024-11-10 19:41:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 165 states have (on average 1.4666666666666666) internal successors, (242), 217 states have internal predecessors, (242), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-10 19:41:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2024-11-10 19:41:17,265 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 32 [2024-11-10 19:41:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:17,265 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2024-11-10 19:41:17,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-10 19:41:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2024-11-10 19:41:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 19:41:17,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:17,266 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] [2024-11-10 19:41:17,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:17,470 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 [2024-11-10 19:41:17,471 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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)] === [2024-11-10 19:41:17,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1731223647, now seen corresponding path program 1 times [2024-11-10 19:41:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:17,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511406375] [2024-11-10 19:41:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:17,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 19:41:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:17,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-10 19:41:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:17,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 19:41:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:17,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:17,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511406375] [2024-11-10 19:41:17,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511406375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:17,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:17,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 19:41:17,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900274349] [2024-11-10 19:41:17,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:17,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 19:41:17,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 19:41:17,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 19:41:17,725 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2024-11-10 19:41:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:18,397 INFO L93 Difference]: Finished difference Result 265 states and 307 transitions. [2024-11-10 19:41:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 19:41:18,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 33 [2024-11-10 19:41:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:18,399 INFO L225 Difference]: With dead ends: 265 [2024-11-10 19:41:18,399 INFO L226 Difference]: Without dead ends: 264 [2024-11-10 19:41:18,399 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 [2024-11-10 19:41:18,400 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 88 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:18,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 467 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 19:41:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-10 19:41:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 253. [2024-11-10 19:41:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 171 states have (on average 1.4678362573099415) internal successors, (251), 223 states have internal predecessors, (251), 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) [2024-11-10 19:41:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 294 transitions. [2024-11-10 19:41:18,412 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 294 transitions. Word has length 33 [2024-11-10 19:41:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:18,412 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 294 transitions. [2024-11-10 19:41:18,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2024-11-10 19:41:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 294 transitions. [2024-11-10 19:41:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 19:41:18,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:18,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:18,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 19:41:18,413 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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)] === [2024-11-10 19:41:18,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:18,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2128325463, now seen corresponding path program 1 times [2024-11-10 19:41:18,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:18,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467263799] [2024-11-10 19:41:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:18,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:18,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036151599] [2024-11-10 19:41:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:18,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:18,439 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) [2024-11-10 19:41:18,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 19:41:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:18,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 19:41:18,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:18,589 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 [2024-11-10 19:41:18,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 19:41:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:18,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:18,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467263799] [2024-11-10 19:41:18,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036151599] [2024-11-10 19:41:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036151599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:18,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:18,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 19:41:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741302657] [2024-11-10 19:41:18,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:18,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 19:41:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 19:41:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 19:41:18,677 INFO L87 Difference]: Start difference. First operand 253 states and 294 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-11-10 19:41:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:19,257 INFO L93 Difference]: Finished difference Result 335 states and 380 transitions. [2024-11-10 19:41:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 19:41:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 34 [2024-11-10 19:41:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:19,258 INFO L225 Difference]: With dead ends: 335 [2024-11-10 19:41:19,258 INFO L226 Difference]: Without dead ends: 334 [2024-11-10 19:41:19,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 19:41:19,259 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 98 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:19,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 483 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 19:41:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-10 19:41:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 255. [2024-11-10 19:41:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.4624277456647399) internal successors, (253), 225 states have internal predecessors, (253), 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) [2024-11-10 19:41:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 296 transitions. [2024-11-10 19:41:19,273 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 296 transitions. Word has length 34 [2024-11-10 19:41:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:19,273 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 296 transitions. [2024-11-10 19:41:19,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-11-10 19:41:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 296 transitions. [2024-11-10 19:41:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-10 19:41:19,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:19,274 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:19,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:19,477 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 [2024-11-10 19:41:19,478 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_47_to_56_0Err17ASSERT_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)] === [2024-11-10 19:41:19,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1285424466, now seen corresponding path program 1 times [2024-11-10 19:41:19,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247721647] [2024-11-10 19:41:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:19,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423817916] [2024-11-10 19:41:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:19,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:19,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:19,504 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) [2024-11-10 19:41:19,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 19:41:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:19,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-10 19:41:19,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:19,677 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 [2024-11-10 19:41:19,723 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 [2024-11-10 19:41:19,895 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 [2024-11-10 19:41:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 19:41:19,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:41:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247721647] [2024-11-10 19:41:19,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423817916] [2024-11-10 19:41:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423817916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 19:41:19,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-10 19:41:19,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-10 19:41:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200387042] [2024-11-10 19:41:19,955 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-10 19:41:19,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 19:41:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 19:41:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-10 19:41:19,957 INFO L87 Difference]: Start difference. First operand 255 states and 296 transitions. Second operand has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 19:41:23,976 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] [2024-11-10 19:41:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:24,461 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2024-11-10 19:41:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 19:41:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-10 19:41:24,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:24,462 INFO L225 Difference]: With dead ends: 278 [2024-11-10 19:41:24,462 INFO L226 Difference]: Without dead ends: 277 [2024-11-10 19:41:24,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-10 19:41:24,463 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 383 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:24,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1287 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 414 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-10 19:41:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-10 19:41:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 255. [2024-11-10 19:41:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.4566473988439306) internal successors, (252), 225 states have internal predecessors, (252), 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) [2024-11-10 19:41:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 295 transitions. [2024-11-10 19:41:24,476 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 295 transitions. Word has length 39 [2024-11-10 19:41:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:24,476 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 295 transitions. [2024-11-10 19:41:24,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 19:41:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 295 transitions. [2024-11-10 19:41:24,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-10 19:41:24,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:24,477 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] [2024-11-10 19:41:24,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 19:41:24,677 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 [2024-11-10 19:41:24,677 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_47_to_56_0Err16ASSERT_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)] === [2024-11-10 19:41:24,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1193452799, now seen corresponding path program 1 times [2024-11-10 19:41:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519986686] [2024-11-10 19:41:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:24,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457762050] [2024-11-10 19:41:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:24,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:24,709 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) [2024-11-10 19:41:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 19:41:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:24,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 19:41:24,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:24,903 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 [2024-11-10 19:41:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:24,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519986686] [2024-11-10 19:41:24,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457762050] [2024-11-10 19:41:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457762050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:24,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:24,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 19:41:24,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844481019] [2024-11-10 19:41:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:24,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 19:41:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 19:41:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-10 19:41:24,988 INFO L87 Difference]: Start difference. First operand 255 states and 295 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-10 19:41:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:25,200 INFO L93 Difference]: Finished difference Result 277 states and 295 transitions. [2024-11-10 19:41:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 19:41:25,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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 40 [2024-11-10 19:41:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:25,201 INFO L225 Difference]: With dead ends: 277 [2024-11-10 19:41:25,201 INFO L226 Difference]: Without dead ends: 276 [2024-11-10 19:41:25,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-10 19:41:25,202 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 151 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:25,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1352 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 19:41:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-10 19:41:25,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 255. [2024-11-10 19:41:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.4508670520231215) internal successors, (251), 225 states have internal predecessors, (251), 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) [2024-11-10 19:41:25,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 294 transitions. [2024-11-10 19:41:25,219 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 294 transitions. Word has length 40 [2024-11-10 19:41:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:25,219 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 294 transitions. [2024-11-10 19:41:25,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-10 19:41:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 294 transitions. [2024-11-10 19:41:25,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-10 19:41:25,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:25,220 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] [2024-11-10 19:41:25,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 19:41:25,424 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 [2024-11-10 19:41:25,425 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_47_to_56_0Err15ASSERT_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)] === [2024-11-10 19:41:25,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash 151872317, now seen corresponding path program 1 times [2024-11-10 19:41:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:25,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993154235] [2024-11-10 19:41:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:25,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300573031] [2024-11-10 19:41:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:25,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:25,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:25,465 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) [2024-11-10 19:41:25,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 19:41:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:25,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-10 19:41:25,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:25,651 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 [2024-11-10 19:41:25,670 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 [2024-11-10 19:41:25,848 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 [2024-11-10 19:41:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 19:41:25,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:25,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993154235] [2024-11-10 19:41:25,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300573031] [2024-11-10 19:41:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300573031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:25,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-10 19:41:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438011416] [2024-11-10 19:41:25,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:25,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 19:41:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 19:41:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-10 19:41:25,864 INFO L87 Difference]: Start difference. First operand 255 states and 294 transitions. Second operand has 15 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-10 19:41:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:26,208 INFO L93 Difference]: Finished difference Result 281 states and 297 transitions. [2024-11-10 19:41:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 19:41:26,209 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 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 42 [2024-11-10 19:41:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:26,210 INFO L225 Difference]: With dead ends: 281 [2024-11-10 19:41:26,210 INFO L226 Difference]: Without dead ends: 280 [2024-11-10 19:41:26,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-10 19:41:26,210 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 252 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:26,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1334 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 19:41:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-10 19:41:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 255. [2024-11-10 19:41:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 225 states have internal predecessors, (250), 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) [2024-11-10 19:41:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 293 transitions. [2024-11-10 19:41:26,223 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 293 transitions. Word has length 42 [2024-11-10 19:41:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:26,223 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 293 transitions. [2024-11-10 19:41:26,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-10 19:41:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 293 transitions. [2024-11-10 19:41:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-10 19:41:26,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:26,224 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] [2024-11-10 19:41:26,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 19:41:26,428 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 [2024-11-10 19:41:26,429 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_47_to_56_0Err14ASSERT_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)] === [2024-11-10 19:41:26,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:26,429 INFO L85 PathProgramCache]: Analyzing trace with hash 413074543, now seen corresponding path program 1 times [2024-11-10 19:41:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:26,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509086171] [2024-11-10 19:41:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198887766] [2024-11-10 19:41:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:26,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:26,469 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) [2024-11-10 19:41:26,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 19:41:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:26,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-10 19:41:26,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:26,674 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 [2024-11-10 19:41:26,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 19:41:27,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 19:41:27,085 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 [2024-11-10 19:41:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 19:41:27,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509086171] [2024-11-10 19:41:27,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198887766] [2024-11-10 19:41:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198887766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:27,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:27,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-10 19:41:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411945777] [2024-11-10 19:41:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:27,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 19:41:27,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 19:41:27,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-10 19:41:27,112 INFO L87 Difference]: Start difference. First operand 255 states and 293 transitions. Second operand has 17 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2024-11-10 19:41:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:27,733 INFO L93 Difference]: Finished difference Result 280 states and 296 transitions. [2024-11-10 19:41:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 19:41:27,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 43 [2024-11-10 19:41:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:27,735 INFO L225 Difference]: With dead ends: 280 [2024-11-10 19:41:27,735 INFO L226 Difference]: Without dead ends: 279 [2024-11-10 19:41:27,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-10 19:41:27,736 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 384 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:27,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1435 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 19:41:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-10 19:41:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 255. [2024-11-10 19:41:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.439306358381503) internal successors, (249), 225 states have internal predecessors, (249), 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) [2024-11-10 19:41:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 292 transitions. [2024-11-10 19:41:27,768 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 292 transitions. Word has length 43 [2024-11-10 19:41:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:27,768 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 292 transitions. [2024-11-10 19:41:27,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2024-11-10 19:41:27,768 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 292 transitions. [2024-11-10 19:41:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-10 19:41:27,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:27,769 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, 1, 1, 1] [2024-11-10 19:41:27,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:27,969 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 [2024-11-10 19:41:27,970 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_47_to_56_0Err13ASSERT_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)] === [2024-11-10 19:41:27,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash -79591045, now seen corresponding path program 1 times [2024-11-10 19:41:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459044940] [2024-11-10 19:41:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:28,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046319336] [2024-11-10 19:41:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:28,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:28,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:28,003 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) [2024-11-10 19:41:28,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 19:41:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:28,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-10 19:41:28,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:28,197 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 [2024-11-10 19:41:28,240 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 [2024-11-10 19:41:28,247 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 [2024-11-10 19:41:28,486 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 [2024-11-10 19:41:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:28,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459044940] [2024-11-10 19:41:28,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046319336] [2024-11-10 19:41:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046319336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-10 19:41:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109781163] [2024-11-10 19:41:28,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:28,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 19:41:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 19:41:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 19:41:28,511 INFO L87 Difference]: Start difference. First operand 255 states and 292 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-11-10 19:41:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:28,924 INFO L93 Difference]: Finished difference Result 274 states and 292 transitions. [2024-11-10 19:41:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 19:41:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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 44 [2024-11-10 19:41:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:28,925 INFO L225 Difference]: With dead ends: 274 [2024-11-10 19:41:28,925 INFO L226 Difference]: Without dead ends: 273 [2024-11-10 19:41:28,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-10 19:41:28,926 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 438 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:28,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1070 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 19:41:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-10 19:41:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 255. [2024-11-10 19:41:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.4335260115606936) internal successors, (248), 225 states have internal predecessors, (248), 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) [2024-11-10 19:41:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 291 transitions. [2024-11-10 19:41:28,945 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 291 transitions. Word has length 44 [2024-11-10 19:41:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:28,945 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 291 transitions. [2024-11-10 19:41:28,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-11-10 19:41:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 291 transitions. [2024-11-10 19:41:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 19:41:28,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:28,945 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:28,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:29,146 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 [2024-11-10 19:41:29,146 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_47_to_56_0Err12ASSERT_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)] === [2024-11-10 19:41:29,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1827644909, now seen corresponding path program 1 times [2024-11-10 19:41:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468092552] [2024-11-10 19:41:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592225099] [2024-11-10 19:41:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:29,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:29,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:29,197 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) [2024-11-10 19:41:29,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 19:41:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:29,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 150 conjuncts are in the unsatisfiable core [2024-11-10 19:41:29,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:29,391 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 [2024-11-10 19:41:29,392 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 [2024-11-10 19:41:29,427 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 [2024-11-10 19:41:29,432 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 [2024-11-10 19:41:29,434 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 [2024-11-10 19:41:29,437 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 [2024-11-10 19:41:29,441 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 [2024-11-10 19:41:29,506 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 [2024-11-10 19:41:29,514 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 [2024-11-10 19:41:29,586 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 [2024-11-10 19:41:29,591 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 [2024-11-10 19:41:29,830 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 [2024-11-10 19:41:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:41:29,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468092552] [2024-11-10 19:41:29,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592225099] [2024-11-10 19:41:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592225099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:29,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:41:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-10 19:41:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395060096] [2024-11-10 19:41:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:29,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 19:41:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:29,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 19:41:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-10 19:41:29,859 INFO L87 Difference]: Start difference. First operand 255 states and 291 transitions. Second operand has 17 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 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) [2024-11-10 19:41:33,913 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] [2024-11-10 19:41:38,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 19:41:42,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 19:41:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:42,858 INFO L93 Difference]: Finished difference Result 344 states and 369 transitions. [2024-11-10 19:41:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 19:41:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 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 45 [2024-11-10 19:41:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:42,860 INFO L225 Difference]: With dead ends: 344 [2024-11-10 19:41:42,860 INFO L226 Difference]: Without dead ends: 343 [2024-11-10 19:41:42,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-10 19:41:42,861 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 485 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 65 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:42,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1759 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 709 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2024-11-10 19:41:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-10 19:41:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 307. [2024-11-10 19:41:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 217 states have (on average 1.423963133640553) internal successors, (309), 271 states have internal predecessors, (309), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-10 19:41:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 365 transitions. [2024-11-10 19:41:42,881 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 365 transitions. Word has length 45 [2024-11-10 19:41:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:42,881 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 365 transitions. [2024-11-10 19:41:42,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 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) [2024-11-10 19:41:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 365 transitions. [2024-11-10 19:41:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 19:41:42,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:42,882 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:42,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:43,086 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 [2024-11-10 19:41:43,087 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_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)] === [2024-11-10 19:41:43,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1360129026, now seen corresponding path program 1 times [2024-11-10 19:41:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:43,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248511858] [2024-11-10 19:41:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:43,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 19:41:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:43,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-10 19:41:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:43,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 19:41:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:43,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 19:41:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:43,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-10 19:41:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 19:41:43,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248511858] [2024-11-10 19:41:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248511858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 19:41:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003861241] [2024-11-10 19:41:43,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:43,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:43,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:43,948 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) [2024-11-10 19:41:43,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 19:41:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:44,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 19:41:44,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:44,208 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 [2024-11-10 19:41:44,212 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 [2024-11-10 19:41:44,254 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 [2024-11-10 19:41:44,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-10 19:41:44,316 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 [2024-11-10 19:41:44,393 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 [2024-11-10 19:41:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 19:41:44,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:41:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 19:41:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003861241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 19:41:45,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 19:41:45,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 40 [2024-11-10 19:41:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239180247] [2024-11-10 19:41:45,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 19:41:45,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-10 19:41:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-10 19:41:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2024-11-10 19:41:45,292 INFO L87 Difference]: Start difference. First operand 307 states and 365 transitions. Second operand has 40 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 states have internal predecessors, (86), 13 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-10 19:41:49,302 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] [2024-11-10 19:41:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:51,126 INFO L93 Difference]: Finished difference Result 371 states and 437 transitions. [2024-11-10 19:41:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 19:41:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 states have internal predecessors, (86), 13 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) Word has length 45 [2024-11-10 19:41:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:51,128 INFO L225 Difference]: With dead ends: 371 [2024-11-10 19:41:51,128 INFO L226 Difference]: Without dead ends: 339 [2024-11-10 19:41:51,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=364, Invalid=2828, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 19:41:51,130 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 426 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:51,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1031 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2212 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2024-11-10 19:41:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-10 19:41:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 323. [2024-11-10 19:41:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 230 states have (on average 1.434782608695652) internal successors, (330), 284 states have internal predecessors, (330), 28 states have call successors, (28), 12 states have call predecessors, (28), 15 states have return successors, (35), 30 states have call predecessors, (35), 28 states have call successors, (35) [2024-11-10 19:41:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 393 transitions. [2024-11-10 19:41:51,171 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 393 transitions. Word has length 45 [2024-11-10 19:41:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:51,171 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 393 transitions. [2024-11-10 19:41:51,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 states have internal predecessors, (86), 13 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-10 19:41:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 393 transitions. [2024-11-10 19:41:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 19:41:51,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:51,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:51,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 19:41:51,376 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 [2024-11-10 19:41:51,377 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_47_to_56_0Err23ASSERT_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)] === [2024-11-10 19:41:51,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 205709349, now seen corresponding path program 1 times [2024-11-10 19:41:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:51,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866034753] [2024-11-10 19:41:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:51,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385477235] [2024-11-10 19:41:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:51,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:51,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:51,411 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 19:41:51,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 19:41:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:51,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-10 19:41:51,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:51,644 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 [2024-11-10 19:41:51,662 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 [2024-11-10 19:41:51,666 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 [2024-11-10 19:41:51,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-10 19:41:51,908 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 [2024-11-10 19:41:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 19:41:51,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:41:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866034753] [2024-11-10 19:41:52,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385477235] [2024-11-10 19:41:52,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385477235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 19:41:52,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-10 19:41:52,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-10 19:41:52,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262733536] [2024-11-10 19:41:52,414 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-10 19:41:52,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 19:41:52,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:52,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 19:41:52,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2024-11-10 19:41:52,415 INFO L87 Difference]: Start difference. First operand 323 states and 393 transitions. Second operand has 17 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 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) [2024-11-10 19:41:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:53,070 INFO L93 Difference]: Finished difference Result 462 states and 530 transitions. [2024-11-10 19:41:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 19:41:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 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 47 [2024-11-10 19:41:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:53,072 INFO L225 Difference]: With dead ends: 462 [2024-11-10 19:41:53,072 INFO L226 Difference]: Without dead ends: 459 [2024-11-10 19:41:53,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2024-11-10 19:41:53,073 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 301 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:53,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2955 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 19:41:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-10 19:41:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 395. [2024-11-10 19:41:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 287 states have (on average 1.456445993031359) internal successors, (418), 346 states have internal predecessors, (418), 38 states have call successors, (38), 15 states have call predecessors, (38), 20 states have return successors, (51), 38 states have call predecessors, (51), 38 states have call successors, (51) [2024-11-10 19:41:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2024-11-10 19:41:53,103 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 47 [2024-11-10 19:41:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:53,104 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2024-11-10 19:41:53,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 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) [2024-11-10 19:41:53,104 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2024-11-10 19:41:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 19:41:53,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:53,104 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:53,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-10 19:41:53,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:53,305 INFO L396 AbstractCegarLoop]: === Iteration 23 === 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)] === [2024-11-10 19:41:53,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 201923745, now seen corresponding path program 1 times [2024-11-10 19:41:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081429832] [2024-11-10 19:41:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:53,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:53,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 19:41:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:53,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-10 19:41:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:54,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 19:41:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:54,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 19:41:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 19:41:54,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081429832] [2024-11-10 19:41:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081429832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 19:41:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580851313] [2024-11-10 19:41:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:54,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:54,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 19:41:54,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 19:41:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:54,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-10 19:41:54,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:54,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-10 19:41:54,349 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 [2024-11-10 19:41:54,368 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 [2024-11-10 19:41:54,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-10 19:41:54,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-10 19:41:54,435 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 [2024-11-10 19:41:54,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-10 19:41:54,458 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 [2024-11-10 19:41:54,460 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 13 treesize of output 9 [2024-11-10 19:41:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 19:41:54,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:41:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580851313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:41:54,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 19:41:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 16 [2024-11-10 19:41:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120485585] [2024-11-10 19:41:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:41:54,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 19:41:54,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 19:41:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-10 19:41:54,481 INFO L87 Difference]: Start difference. First operand 395 states and 507 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 19:41:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:41:55,294 INFO L93 Difference]: Finished difference Result 583 states and 716 transitions. [2024-11-10 19:41:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 19:41:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-10 19:41:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:41:55,297 INFO L225 Difference]: With dead ends: 583 [2024-11-10 19:41:55,297 INFO L226 Difference]: Without dead ends: 416 [2024-11-10 19:41:55,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-10 19:41:55,298 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 105 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 19:41:55,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 598 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 19:41:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-10 19:41:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 405. [2024-11-10 19:41:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 294 states have (on average 1.4489795918367347) internal successors, (426), 354 states have internal predecessors, (426), 40 states have call successors, (40), 17 states have call predecessors, (40), 21 states have return successors, (51), 38 states have call predecessors, (51), 40 states have call successors, (51) [2024-11-10 19:41:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 517 transitions. [2024-11-10 19:41:55,330 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 517 transitions. Word has length 47 [2024-11-10 19:41:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:41:55,331 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 517 transitions. [2024-11-10 19:41:55,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 19:41:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 517 transitions. [2024-11-10 19:41:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-10 19:41:55,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:41:55,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:41:55,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 19:41:55,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:55,532 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_47_to_56_0Err22ASSERT_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)] === [2024-11-10 19:41:55,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:41:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2082022555, now seen corresponding path program 1 times [2024-11-10 19:41:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:41:55,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733391549] [2024-11-10 19:41:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:55,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:41:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:41:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858022026] [2024-11-10 19:41:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:41:55,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:41:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:41:55,592 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 19:41:55,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 19:41:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:41:55,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-11-10 19:41:55,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:41:55,854 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 [2024-11-10 19:41:55,967 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 [2024-11-10 19:41:55,972 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 [2024-11-10 19:41:55,979 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 [2024-11-10 19:41:55,983 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 [2024-11-10 19:41:55,991 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 [2024-11-10 19:41:56,140 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 [2024-11-10 19:41:56,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 19:41:56,503 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 36 treesize of output 24 [2024-11-10 19:41:56,550 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-10 19:41:56,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 51 [2024-11-10 19:41:57,027 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-10 19:41:57,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-11-10 19:41:57,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 19:41:57,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 102 [2024-11-10 19:41:57,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 19:41:57,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 143 [2024-11-10 19:41:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 19:41:57,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:41:59,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:41:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733391549] [2024-11-10 19:41:59,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:41:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858022026] [2024-11-10 19:41:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858022026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 19:41:59,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-10 19:41:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2024-11-10 19:41:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144569897] [2024-11-10 19:41:59,865 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-10 19:41:59,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 19:41:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:41:59,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 19:41:59,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 19:41:59,866 INFO L87 Difference]: Start difference. First operand 405 states and 517 transitions. Second operand has 27 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 20 states have internal predecessors, (38), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 19:42:03,890 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] [2024-11-10 19:42:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:42:08,996 INFO L93 Difference]: Finished difference Result 519 states and 623 transitions. [2024-11-10 19:42:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 19:42:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 20 states have internal predecessors, (38), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2024-11-10 19:42:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:42:08,998 INFO L225 Difference]: With dead ends: 519 [2024-11-10 19:42:08,998 INFO L226 Difference]: Without dead ends: 518 [2024-11-10 19:42:09,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=377, Invalid=3529, Unknown=0, NotChecked=0, Total=3906 [2024-11-10 19:42:09,000 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 558 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-10 19:42:09,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 2469 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2721 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2024-11-10 19:42:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-10 19:42:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 468. [2024-11-10 19:42:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 346 states have (on average 1.4624277456647399) internal successors, (506), 408 states have internal predecessors, (506), 47 states have call successors, (47), 20 states have call predecessors, (47), 25 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2024-11-10 19:42:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 612 transitions. [2024-11-10 19:42:09,057 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 612 transitions. Word has length 48 [2024-11-10 19:42:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:42:09,057 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 612 transitions. [2024-11-10 19:42:09,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 20 states have internal predecessors, (38), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 19:42:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 612 transitions. [2024-11-10 19:42:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-10 19:42:09,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:42:09,058 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:42:09,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 19:42:09,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-10 19:42:09,263 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_47_to_56_0Err21ASSERT_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)] === [2024-11-10 19:42:09,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:42:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash -631083591, now seen corresponding path program 1 times [2024-11-10 19:42:09,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:42:09,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549513594] [2024-11-10 19:42:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:42:09,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:42:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:42:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454660152] [2024-11-10 19:42:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:42:09,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:42:09,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:42:09,303 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 19:42:09,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 19:42:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:42:09,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-10 19:42:09,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:42:09,558 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 [2024-11-10 19:42:09,626 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 [2024-11-10 19:42:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:42:09,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:42:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:42:10,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:42:10,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549513594] [2024-11-10 19:42:10,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:42:10,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454660152] [2024-11-10 19:42:10,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454660152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 19:42:10,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 19:42:10,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-10 19:42:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191759213] [2024-11-10 19:42:10,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 19:42:10,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 19:42:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:42:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 19:42:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-10 19:42:10,936 INFO L87 Difference]: Start difference. First operand 468 states and 612 transitions. Second operand has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 19:42:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:42:11,317 INFO L93 Difference]: Finished difference Result 518 states and 614 transitions. [2024-11-10 19:42:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 19:42:11,317 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-10 19:42:11,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:42:11,319 INFO L225 Difference]: With dead ends: 518 [2024-11-10 19:42:11,319 INFO L226 Difference]: Without dead ends: 516 [2024-11-10 19:42:11,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-10 19:42:11,321 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 260 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 19:42:11,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 2116 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 19:42:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-10 19:42:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 468. [2024-11-10 19:42:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 346 states have (on average 1.4508670520231215) internal successors, (502), 408 states have internal predecessors, (502), 47 states have call successors, (47), 20 states have call predecessors, (47), 25 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2024-11-10 19:42:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 608 transitions. [2024-11-10 19:42:11,385 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 608 transitions. Word has length 50 [2024-11-10 19:42:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:42:11,386 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 608 transitions. [2024-11-10 19:42:11,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 19:42:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 608 transitions. [2024-11-10 19:42:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 19:42:11,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:42:11,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:42:11,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 19:42:11,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 19:42:11,591 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_47_to_56_0Err19ASSERT_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)] === [2024-11-10 19:42:11,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:42:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash -880941353, now seen corresponding path program 1 times [2024-11-10 19:42:11,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:42:11,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154469115] [2024-11-10 19:42:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:42:11,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:42:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:42:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973102379] [2024-11-10 19:42:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:42:11,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:42:11,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:42:11,619 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 19:42:11,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 19:42:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:42:11,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 212 conjuncts are in the unsatisfiable core [2024-11-10 19:42:11,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:42:11,870 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 [2024-11-10 19:42:11,872 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 15 treesize of output 1 [2024-11-10 19:42:11,904 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 [2024-11-10 19:42:11,908 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 [2024-11-10 19:42:11,913 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 [2024-11-10 19:42:11,918 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 [2024-11-10 19:42:12,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-10 19:42:12,005 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 [2024-11-10 19:42:12,030 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 [2024-11-10 19:42:12,126 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 [2024-11-10 19:42:12,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 19:42:12,138 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 23 treesize of output 27 [2024-11-10 19:42:12,170 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 [2024-11-10 19:42:12,231 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 [2024-11-10 19:42:12,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 19:42:12,500 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 [2024-11-10 19:42:12,529 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 [2024-11-10 19:42:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:42:12,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 19:42:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 19:42:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:42:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154469115] [2024-11-10 19:42:16,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:42:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973102379] [2024-11-10 19:42:16,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973102379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 19:42:16,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 19:42:16,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 32 [2024-11-10 19:42:16,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854924880] [2024-11-10 19:42:16,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 19:42:16,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 19:42:16,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:42:16,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 19:42:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 19:42:16,497 INFO L87 Difference]: Start difference. First operand 468 states and 608 transitions. Second operand has 33 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 24 states have internal predecessors, (77), 10 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-10 19:42:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 19:42:34,345 INFO L93 Difference]: Finished difference Result 513 states and 610 transitions. [2024-11-10 19:42:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 19:42:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 24 states have internal predecessors, (77), 10 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 52 [2024-11-10 19:42:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 19:42:34,348 INFO L225 Difference]: With dead ends: 513 [2024-11-10 19:42:34,348 INFO L226 Difference]: Without dead ends: 512 [2024-11-10 19:42:34,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 19:42:34,349 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 727 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-11-10 19:42:34,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 2435 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2024-11-10 19:42:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-10 19:42:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 468. [2024-11-10 19:42:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 346 states have (on average 1.4450867052023122) internal successors, (500), 408 states have internal predecessors, (500), 47 states have call successors, (47), 20 states have call predecessors, (47), 25 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2024-11-10 19:42:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 606 transitions. [2024-11-10 19:42:34,420 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 606 transitions. Word has length 52 [2024-11-10 19:42:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 19:42:34,420 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 606 transitions. [2024-11-10 19:42:34,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 24 states have internal predecessors, (77), 10 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-10 19:42:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 606 transitions. [2024-11-10 19:42:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 19:42:34,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 19:42:34,421 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 19:42:34,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-10 19:42:34,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 19:42:34,622 INFO L396 AbstractCegarLoop]: === Iteration 27 === 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)] === [2024-11-10 19:42:34,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 19:42:34,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1406953616, now seen corresponding path program 1 times [2024-11-10 19:42:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 19:42:34,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604338565] [2024-11-10 19:42:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:42:34,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 19:42:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 19:42:34,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564182686] [2024-11-10 19:42:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 19:42:34,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 19:42:34,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 19:42:34,663 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 19:42:34,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 19:42:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 19:42:35,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-10 19:42:35,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 19:42:35,105 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 [2024-11-10 19:42:35,112 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 [2024-11-10 19:42:35,180 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 11 treesize of output 7 [2024-11-10 19:42:35,512 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 [2024-11-10 19:42:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 19:42:35,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 19:42:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 19:42:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604338565] [2024-11-10 19:42:35,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 19:42:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564182686] [2024-11-10 19:42:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564182686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 19:42:35,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 19:42:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-10 19:42:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206928430] [2024-11-10 19:42:35,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 19:42:35,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 19:42:35,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 19:42:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 19:42:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-10 19:42:35,530 INFO L87 Difference]: Start difference. First operand 468 states and 606 transitions. Second operand has 16 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)