./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 8be7027f 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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 17:51:04,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 17:51:04,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 17:51:04,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 17:51:04,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 17:51:04,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 17:51:04,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 17:51:04,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 17:51:04,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 17:51:04,810 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 17:51:04,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 17:51:04,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 17:51:04,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 17:51:04,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 17:51:04,811 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 17:51:04,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 17:51:04,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 17:51:04,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 17:51:04,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 17:51:04,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 17:51:04,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 17:51:04,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 17:51:04,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 17:51:04,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 17:51:04,818 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 17:51:04,818 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 17:51:04,818 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 17:51:04,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 17:51:04,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 17:51:04,818 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 17:51:04,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 17:51:04,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 17:51:04,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 17:51:04,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 17:51:04,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 17:51:04,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 17:51:04,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 17:51:04,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 17:51:04,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 17:51:04,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 17:51:04,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 17:51:04,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 17:51:04,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 17:51:04,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 17:51:04,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2024-11-12 17:51:05,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 17:51:05,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 17:51:05,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 17:51:05,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 17:51:05,043 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 17:51:05,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-12 17:51:06,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 17:51:06,463 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 17:51:06,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-12 17:51:06,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f28bf93/272fecb0d79b4621a759e2571566daf2/FLAG30b021eeb [2024-11-12 17:51:06,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f28bf93/272fecb0d79b4621a759e2571566daf2 [2024-11-12 17:51:06,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 17:51:06,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 17:51:06,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 17:51:06,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 17:51:06,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 17:51:06,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b325334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06, skipping insertion in model container [2024-11-12 17:51:06,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 17:51:06,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 17:51:06,727 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 17:51:06,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 17:51:06,773 INFO L204 MainTranslator]: Completed translation [2024-11-12 17:51:06,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06 WrapperNode [2024-11-12 17:51:06,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 17:51:06,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 17:51:06,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 17:51:06,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 17:51:06,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,819 INFO L138 Inliner]: procedures = 18, calls = 128, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2024-11-12 17:51:06,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 17:51:06,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 17:51:06,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 17:51:06,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 17:51:06,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,856 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 5, 6, 6, 9, 7, 6, 5, 6, 7, 7, 6, 5]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2]. [2024-11-12 17:51:06,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 17:51:06,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 17:51:06,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 17:51:06,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 17:51:06,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (1/1) ... [2024-11-12 17:51:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 17:51:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:06,904 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) [2024-11-12 17:51:06,905 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 [2024-11-12 17:51:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 17:51:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-12 17:51:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-12 17:51:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-12 17:51:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-12 17:51:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-12 17:51:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-12 17:51:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-12 17:51:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-12 17:51:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-12 17:51:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-12 17:51:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-12 17:51:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-12 17:51:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 17:51:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-12 17:51:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-12 17:51:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 17:51:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 17:51:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-12 17:51:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 17:51:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 17:51:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-12 17:51:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-12 17:51:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 17:51:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 17:51:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 17:51:07,043 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 17:51:07,044 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 17:51:07,497 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-11-12 17:51:07,497 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 17:51:07,508 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 17:51:07,509 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 17:51:07,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:51:07 BoogieIcfgContainer [2024-11-12 17:51:07,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 17:51:07,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 17:51:07,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 17:51:07,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 17:51:07,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:51:06" (1/3) ... [2024-11-12 17:51:07,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77988143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:51:07, skipping insertion in model container [2024-11-12 17:51:07,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:51:06" (2/3) ... [2024-11-12 17:51:07,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77988143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:51:07, skipping insertion in model container [2024-11-12 17:51:07,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:51:07" (3/3) ... [2024-11-12 17:51:07,515 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-11-12 17:51:07,528 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 17:51:07,528 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-12 17:51:07,568 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 17:51:07,575 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;@1fa93992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 17:51:07,575 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-12 17:51:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-12 17:51:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-12 17:51:07,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:07,586 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:51:07,586 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:07,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash -853652536, now seen corresponding path program 1 times [2024-11-12 17:51:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681555015] [2024-11-12 17:51:07,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:07,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:51:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:07,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-12 17:51:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:07,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-12 17:51:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:07,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681555015] [2024-11-12 17:51:07,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681555015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:07,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:07,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 17:51:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230517504] [2024-11-12 17:51:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:07,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 17:51:07,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 17:51:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 17:51:07,963 INFO L87 Difference]: Start difference. First operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:08,399 INFO L93 Difference]: Finished difference Result 308 states and 353 transitions. [2024-11-12 17:51:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 17:51:08,402 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 [2024-11-12 17:51:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:08,412 INFO L225 Difference]: With dead ends: 308 [2024-11-12 17:51:08,412 INFO L226 Difference]: Without dead ends: 152 [2024-11-12 17:51:08,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 17:51:08,418 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 67 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:08,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:51:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-12 17:51:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2024-11-12 17:51:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 79 states have (on average 1.6582278481012658) internal successors, (131), 131 states have internal predecessors, (131), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-12 17:51:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2024-11-12 17:51:08,499 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 21 [2024-11-12 17:51:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:08,500 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2024-11-12 17:51:08,500 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) [2024-11-12 17:51:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2024-11-12 17:51:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-12 17:51:08,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:08,504 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:51:08,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 17:51:08,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:08,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1124489108, now seen corresponding path program 1 times [2024-11-12 17:51:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:08,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113405659] [2024-11-12 17:51:08,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:08,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:51:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:08,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-12 17:51:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:08,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-12 17:51:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 17:51:09,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:09,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113405659] [2024-11-12 17:51:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113405659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:09,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:09,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 17:51:09,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945340239] [2024-11-12 17:51:09,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:09,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 17:51:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 17:51:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 17:51:09,013 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 17:51:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:10,015 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2024-11-12 17:51:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 17:51:10,016 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 [2024-11-12 17:51:10,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:10,017 INFO L225 Difference]: With dead ends: 181 [2024-11-12 17:51:10,018 INFO L226 Difference]: Without dead ends: 152 [2024-11-12 17:51:10,018 INFO L434 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 [2024-11-12 17:51:10,019 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 91 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:10,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 588 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 17:51:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-12 17:51:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2024-11-12 17:51:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.65) internal successors, (132), 132 states have internal predecessors, (132), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-12 17:51:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2024-11-12 17:51:10,029 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 22 [2024-11-12 17:51:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:10,030 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2024-11-12 17:51:10,030 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) [2024-11-12 17:51:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2024-11-12 17:51:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 17:51:10,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:10,031 INFO L218 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] [2024-11-12 17:51:10,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 17:51:10,031 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:10,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash -803142642, now seen corresponding path program 1 times [2024-11-12 17:51:10,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:10,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727634048] [2024-11-12 17:51:10,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731537305] [2024-11-12 17:51:10,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:10,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:10,086 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) [2024-11-12 17:51:10,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 17:51:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:10,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-12 17:51:10,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:10,303 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 [2024-11-12 17:51:10,363 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 [2024-11-12 17:51:10,590 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 [2024-11-12 17:51:10,598 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 [2024-11-12 17:51:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 17:51:10,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:10,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:10,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727634048] [2024-11-12 17:51:10,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731537305] [2024-11-12 17:51:10,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731537305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:10,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:10,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-12 17:51:10,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727704860] [2024-11-12 17:51:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:10,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 17:51:10,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:10,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 17:51:10,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-12 17:51:10,615 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:51:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:11,033 INFO L93 Difference]: Finished difference Result 241 states and 258 transitions. [2024-11-12 17:51:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 17:51:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-12 17:51:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:11,035 INFO L225 Difference]: With dead ends: 241 [2024-11-12 17:51:11,035 INFO L226 Difference]: Without dead ends: 238 [2024-11-12 17:51:11,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-12 17:51:11,037 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 187 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:11,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1558 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:51:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-12 17:51:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 202. [2024-11-12 17:51:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 124 states have (on average 1.653225806451613) internal successors, (205), 178 states have internal predecessors, (205), 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) [2024-11-12 17:51:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 246 transitions. [2024-11-12 17:51:11,051 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 246 transitions. Word has length 26 [2024-11-12 17:51:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:11,051 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 246 transitions. [2024-11-12 17:51:11,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:51:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 246 transitions. [2024-11-12 17:51:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 17:51:11,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:11,052 INFO L218 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] [2024-11-12 17:51:11,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 17:51:11,256 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 [2024-11-12 17:51:11,257 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_70_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:11,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash -805930986, now seen corresponding path program 1 times [2024-11-12 17:51:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:11,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795757960] [2024-11-12 17:51:11,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:11,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837715394] [2024-11-12 17:51:11,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:11,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:11,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:11,317 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) [2024-11-12 17:51:11,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 17:51:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:11,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 17:51:11,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:11,450 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 [2024-11-12 17:51:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:11,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795757960] [2024-11-12 17:51:11,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837715394] [2024-11-12 17:51:11,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837715394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:11,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:11,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 17:51:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417639069] [2024-11-12 17:51:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:11,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 17:51:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 17:51:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 17:51:11,481 INFO L87 Difference]: Start difference. First operand 202 states and 246 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:11,877 INFO L93 Difference]: Finished difference Result 215 states and 261 transitions. [2024-11-12 17:51:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 17:51:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-12 17:51:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:11,879 INFO L225 Difference]: With dead ends: 215 [2024-11-12 17:51:11,879 INFO L226 Difference]: Without dead ends: 213 [2024-11-12 17:51:11,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:51:11,880 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 90 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:11,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 249 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:51:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-12 17:51:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2024-11-12 17:51:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 129 states have (on average 1.627906976744186) internal successors, (210), 182 states have internal predecessors, (210), 20 states have call successors, (20), 8 states have call predecessors, (20), 10 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 255 transitions. [2024-11-12 17:51:11,902 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 255 transitions. Word has length 26 [2024-11-12 17:51:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:11,902 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 255 transitions. [2024-11-12 17:51:11,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 255 transitions. [2024-11-12 17:51:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-12 17:51:11,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:11,904 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:51:11,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 17:51:12,104 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 [2024-11-12 17:51:12,105 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:12,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash 872381911, now seen corresponding path program 1 times [2024-11-12 17:51:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:12,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850530697] [2024-11-12 17:51:12,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:12,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462992539] [2024-11-12 17:51:12,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:12,156 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) [2024-11-12 17:51:12,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 17:51:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:12,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-12 17:51:12,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:12,326 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 [2024-11-12 17:51:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:12,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850530697] [2024-11-12 17:51:12,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462992539] [2024-11-12 17:51:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462992539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 17:51:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74151529] [2024-11-12 17:51:12,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:12,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 17:51:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 17:51:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:51:12,399 INFO L87 Difference]: Start difference. First operand 209 states and 255 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-12 17:51:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:12,653 INFO L93 Difference]: Finished difference Result 248 states and 267 transitions. [2024-11-12 17:51:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 17:51:12,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 27 [2024-11-12 17:51:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:12,655 INFO L225 Difference]: With dead ends: 248 [2024-11-12 17:51:12,655 INFO L226 Difference]: Without dead ends: 247 [2024-11-12 17:51:12,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-12 17:51:12,656 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 160 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:12,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1175 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:51:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-12 17:51:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 209. [2024-11-12 17:51:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 129 states have (on average 1.62015503875969) internal successors, (209), 182 states have internal predecessors, (209), 20 states have call successors, (20), 8 states have call predecessors, (20), 10 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 254 transitions. [2024-11-12 17:51:12,674 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 254 transitions. Word has length 27 [2024-11-12 17:51:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:12,674 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 254 transitions. [2024-11-12 17:51:12,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-12 17:51:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 254 transitions. [2024-11-12 17:51:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 17:51:12,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:12,675 INFO L218 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] [2024-11-12 17:51:12,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 17:51:12,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:12,880 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_47_to_56_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:12,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:12,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1274035504, now seen corresponding path program 1 times [2024-11-12 17:51:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367404036] [2024-11-12 17:51:12,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:12,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142748375] [2024-11-12 17:51:12,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:12,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:12,927 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) [2024-11-12 17:51:12,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 17:51:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:13,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-12 17:51:13,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:13,175 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 [2024-11-12 17:51:13,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:51:13,476 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 [2024-11-12 17:51:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:51:13,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:51:14,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367404036] [2024-11-12 17:51:14,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142748375] [2024-11-12 17:51:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142748375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:51:14,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:51:14,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-12 17:51:14,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645123511] [2024-11-12 17:51:14,053 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:51:14,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 17:51:14,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 17:51:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-12 17:51:14,054 INFO L87 Difference]: Start difference. First operand 209 states and 254 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:51:18,067 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] [2024-11-12 17:51:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:18,547 INFO L93 Difference]: Finished difference Result 241 states and 259 transitions. [2024-11-12 17:51:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 17:51:18,548 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-12 17:51:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:18,549 INFO L225 Difference]: With dead ends: 241 [2024-11-12 17:51:18,549 INFO L226 Difference]: Without dead ends: 240 [2024-11-12 17:51:18,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-11-12 17:51:18,550 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 280 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:18,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1436 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 455 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-12 17:51:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-12 17:51:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 213. [2024-11-12 17:51:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.5984848484848484) internal successors, (211), 185 states have internal predecessors, (211), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 256 transitions. [2024-11-12 17:51:18,604 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 256 transitions. Word has length 28 [2024-11-12 17:51:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:18,605 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 256 transitions. [2024-11-12 17:51:18,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:51:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 256 transitions. [2024-11-12 17:51:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 17:51:18,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:18,605 INFO L218 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] [2024-11-12 17:51:18,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 17:51:18,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:18,806 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_70_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:18,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1405560680, now seen corresponding path program 1 times [2024-11-12 17:51:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:18,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420494607] [2024-11-12 17:51:18,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:18,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:18,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:51:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:18,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-12 17:51:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:18,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:51:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420494607] [2024-11-12 17:51:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420494607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:18,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:51:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977584706] [2024-11-12 17:51:18,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:18,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:51:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:51:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:51:18,967 INFO L87 Difference]: Start difference. First operand 213 states and 256 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) [2024-11-12 17:51:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:19,646 INFO L93 Difference]: Finished difference Result 228 states and 274 transitions. [2024-11-12 17:51:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:51:19,647 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 [2024-11-12 17:51:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:19,648 INFO L225 Difference]: With dead ends: 228 [2024-11-12 17:51:19,648 INFO L226 Difference]: Without dead ends: 227 [2024-11-12 17:51:19,648 INFO L434 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 [2024-11-12 17:51:19,649 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 75 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:19,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 414 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 17:51:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-12 17:51:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2024-11-12 17:51:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5827338129496402) internal successors, (220), 190 states have internal predecessors, (220), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2024-11-12 17:51:19,661 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 28 [2024-11-12 17:51:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:19,661 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 265 transitions. [2024-11-12 17:51:19,661 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) [2024-11-12 17:51:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 265 transitions. [2024-11-12 17:51:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 17:51:19,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:19,662 INFO L218 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] [2024-11-12 17:51:19,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 17:51:19,662 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_47_to_56_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:19,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 840395001, now seen corresponding path program 1 times [2024-11-12 17:51:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146154004] [2024-11-12 17:51:19,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:19,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664285834] [2024-11-12 17:51:19,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:19,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:19,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:19,687 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) [2024-11-12 17:51:19,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 17:51:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:19,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-12 17:51:19,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:19,827 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 [2024-11-12 17:51:19,861 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 [2024-11-12 17:51:19,947 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 [2024-11-12 17:51:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:19,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146154004] [2024-11-12 17:51:19,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664285834] [2024-11-12 17:51:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664285834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:19,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 17:51:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568583859] [2024-11-12 17:51:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:19,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 17:51:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 17:51:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-12 17:51:19,959 INFO L87 Difference]: Start difference. First operand 220 states and 265 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:51:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:20,284 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2024-11-12 17:51:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 17:51:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-11-12 17:51:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:20,287 INFO L225 Difference]: With dead ends: 245 [2024-11-12 17:51:20,287 INFO L226 Difference]: Without dead ends: 244 [2024-11-12 17:51:20,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-12 17:51:20,287 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 288 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:20,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1180 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:51:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-12 17:51:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 220. [2024-11-12 17:51:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5755395683453237) internal successors, (219), 190 states have internal predecessors, (219), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2024-11-12 17:51:20,302 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 29 [2024-11-12 17:51:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:20,303 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2024-11-12 17:51:20,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:51:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2024-11-12 17:51:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 17:51:20,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:20,304 INFO L218 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] [2024-11-12 17:51:20,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 17:51:20,504 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 [2024-11-12 17:51:20,505 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_70_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:20,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -622708004, now seen corresponding path program 1 times [2024-11-12 17:51:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127858705] [2024-11-12 17:51:20,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:20,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253307183] [2024-11-12 17:51:20,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:20,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:20,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:20,528 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) [2024-11-12 17:51:20,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 17:51:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:20,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 17:51:20,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:20,667 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 [2024-11-12 17:51:20,687 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 [2024-11-12 17:51:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:20,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:20,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127858705] [2024-11-12 17:51:20,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253307183] [2024-11-12 17:51:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253307183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:20,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:51:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448655564] [2024-11-12 17:51:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:20,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:51:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:51:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:51:20,763 INFO L87 Difference]: Start difference. First operand 220 states and 264 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) [2024-11-12 17:51:21,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:21,505 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2024-11-12 17:51:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:51:21,505 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 [2024-11-12 17:51:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:21,506 INFO L225 Difference]: With dead ends: 300 [2024-11-12 17:51:21,506 INFO L226 Difference]: Without dead ends: 299 [2024-11-12 17:51:21,507 INFO L434 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 [2024-11-12 17:51:21,507 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 75 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:21,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 433 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 17:51:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-12 17:51:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 270. [2024-11-12 17:51:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 180 states have (on average 1.5666666666666667) internal successors, (282), 233 states have internal predecessors, (282), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (31), 27 states have call predecessors, (31), 26 states have call successors, (31) [2024-11-12 17:51:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions. [2024-11-12 17:51:21,519 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 29 [2024-11-12 17:51:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:21,519 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 339 transitions. [2024-11-12 17:51:21,519 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) [2024-11-12 17:51:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions. [2024-11-12 17:51:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:51:21,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:21,520 INFO L218 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] [2024-11-12 17:51:21,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 17:51:21,724 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 [2024-11-12 17:51:21,724 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_47_to_56_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:21,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 282441298, now seen corresponding path program 1 times [2024-11-12 17:51:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:21,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639150610] [2024-11-12 17:51:21,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619387987] [2024-11-12 17:51:21,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:21,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:21,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:21,771 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) [2024-11-12 17:51:21,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 17:51:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:21,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-12 17:51:21,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:22,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:51:22,059 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 [2024-11-12 17:51:22,067 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 [2024-11-12 17:51:22,314 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 [2024-11-12 17:51:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:22,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:22,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:22,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639150610] [2024-11-12 17:51:22,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:22,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619387987] [2024-11-12 17:51:22,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619387987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:22,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:22,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-12 17:51:22,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566536174] [2024-11-12 17:51:22,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:22,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 17:51:22,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:22,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 17:51:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:51:22,344 INFO L87 Difference]: Start difference. First operand 270 states and 339 transitions. Second operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:51:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:22,964 INFO L93 Difference]: Finished difference Result 294 states and 339 transitions. [2024-11-12 17:51:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 17:51:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-12 17:51:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:22,968 INFO L225 Difference]: With dead ends: 294 [2024-11-12 17:51:22,968 INFO L226 Difference]: Without dead ends: 293 [2024-11-12 17:51:22,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-12 17:51:22,970 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 286 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:22,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1264 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 17:51:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-12 17:51:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 270. [2024-11-12 17:51:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 180 states have (on average 1.5555555555555556) internal successors, (280), 233 states have internal predecessors, (280), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (31), 27 states have call predecessors, (31), 26 states have call successors, (31) [2024-11-12 17:51:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 337 transitions. [2024-11-12 17:51:23,004 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 337 transitions. Word has length 30 [2024-11-12 17:51:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:23,004 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 337 transitions. [2024-11-12 17:51:23,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 17:51:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 337 transitions. [2024-11-12 17:51:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:51:23,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:23,004 INFO L218 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] [2024-11-12 17:51:23,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 17:51:23,205 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 [2024-11-12 17:51:23,205 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_70_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:23,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2124078822, now seen corresponding path program 1 times [2024-11-12 17:51:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:23,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152096307] [2024-11-12 17:51:23,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:23,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:23,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235571928] [2024-11-12 17:51:23,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:23,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:23,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:23,262 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) [2024-11-12 17:51:23,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 17:51:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:23,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 17:51:23,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:23,398 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 [2024-11-12 17:51:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:23,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152096307] [2024-11-12 17:51:23,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235571928] [2024-11-12 17:51:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235571928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:23,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:23,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 17:51:23,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031364068] [2024-11-12 17:51:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:23,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 17:51:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 17:51:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 17:51:23,420 INFO L87 Difference]: Start difference. First operand 270 states and 337 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:23,822 INFO L93 Difference]: Finished difference Result 280 states and 349 transitions. [2024-11-12 17:51:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 17:51:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-12 17:51:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:23,826 INFO L225 Difference]: With dead ends: 280 [2024-11-12 17:51:23,826 INFO L226 Difference]: Without dead ends: 278 [2024-11-12 17:51:23,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 17:51:23,827 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 86 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:23,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 241 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:51:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-12 17:51:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2024-11-12 17:51:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 184 states have (on average 1.5543478260869565) internal successors, (286), 237 states have internal predecessors, (286), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (31), 27 states have call predecessors, (31), 26 states have call successors, (31) [2024-11-12 17:51:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 343 transitions. [2024-11-12 17:51:23,842 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 343 transitions. Word has length 30 [2024-11-12 17:51:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:23,842 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 343 transitions. [2024-11-12 17:51:23,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 343 transitions. [2024-11-12 17:51:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-12 17:51:23,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:23,845 INFO L218 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] [2024-11-12 17:51:23,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 17:51:24,045 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 [2024-11-12 17:51:24,046 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_47_to_56_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:24,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:24,046 INFO L85 PathProgramCache]: Analyzing trace with hash 165745691, now seen corresponding path program 1 times [2024-11-12 17:51:24,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:24,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335106631] [2024-11-12 17:51:24,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577570238] [2024-11-12 17:51:24,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:24,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:24,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:24,102 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) [2024-11-12 17:51:24,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 17:51:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:24,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-12 17:51:24,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:24,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:51:24,348 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 [2024-11-12 17:51:24,360 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 [2024-11-12 17:51:24,574 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 [2024-11-12 17:51:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:24,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:24,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:24,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335106631] [2024-11-12 17:51:24,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:24,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577570238] [2024-11-12 17:51:24,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577570238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-12 17:51:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447751519] [2024-11-12 17:51:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:24,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 17:51:24,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 17:51:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:51:24,602 INFO L87 Difference]: Start difference. First operand 274 states and 343 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) [2024-11-12 17:51:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:25,049 INFO L93 Difference]: Finished difference Result 297 states and 343 transitions. [2024-11-12 17:51:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 17:51:25,049 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 [2024-11-12 17:51:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:25,050 INFO L225 Difference]: With dead ends: 297 [2024-11-12 17:51:25,050 INFO L226 Difference]: Without dead ends: 296 [2024-11-12 17:51:25,051 INFO L434 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 [2024-11-12 17:51:25,051 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 340 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:25,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1270 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:51:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-12 17:51:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 274. [2024-11-12 17:51:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 184 states have (on average 1.5434782608695652) internal successors, (284), 237 states have internal predecessors, (284), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (31), 27 states have call predecessors, (31), 26 states have call successors, (31) [2024-11-12 17:51:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 341 transitions. [2024-11-12 17:51:25,064 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 341 transitions. Word has length 31 [2024-11-12 17:51:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:25,065 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 341 transitions. [2024-11-12 17:51:25,065 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) [2024-11-12 17:51:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 341 transitions. [2024-11-12 17:51:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 17:51:25,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:25,065 INFO L218 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] [2024-11-12 17:51:25,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 17:51:25,265 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 [2024-11-12 17:51:25,266 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_70_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:25,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1130278500, now seen corresponding path program 1 times [2024-11-12 17:51:25,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:25,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522562451] [2024-11-12 17:51:25,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:25,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:25,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 17:51:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:25,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-12 17:51:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:25,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-12 17:51:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:25,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:25,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522562451] [2024-11-12 17:51:25,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522562451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:25,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:25,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:51:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242473979] [2024-11-12 17:51:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:25,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:51:25,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:25,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:51:25,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:51:25,540 INFO L87 Difference]: Start difference. First operand 274 states and 341 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:26,442 INFO L93 Difference]: Finished difference Result 293 states and 362 transitions. [2024-11-12 17:51:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:51:26,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-12 17:51:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:26,443 INFO L225 Difference]: With dead ends: 293 [2024-11-12 17:51:26,444 INFO L226 Difference]: Without dead ends: 292 [2024-11-12 17:51:26,444 INFO L434 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 [2024-11-12 17:51:26,444 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 84 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:26,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 484 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 17:51:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-12 17:51:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 280. [2024-11-12 17:51:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 190 states have (on average 1.5421052631578946) internal successors, (293), 243 states have internal predecessors, (293), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (31), 27 states have call predecessors, (31), 26 states have call successors, (31) [2024-11-12 17:51:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 350 transitions. [2024-11-12 17:51:26,459 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 350 transitions. Word has length 32 [2024-11-12 17:51:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:26,459 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 350 transitions. [2024-11-12 17:51:26,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 350 transitions. [2024-11-12 17:51:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-12 17:51:26,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:26,460 INFO L218 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] [2024-11-12 17:51:26,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 17:51:26,460 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_70_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:26,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -678895008, now seen corresponding path program 1 times [2024-11-12 17:51:26,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:26,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575473272] [2024-11-12 17:51:26,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553421185] [2024-11-12 17:51:26,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:26,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:26,485 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) [2024-11-12 17:51:26,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 17:51:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:26,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 17:51:26,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:26,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:51:26,679 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 [2024-11-12 17:51:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:51:26,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575473272] [2024-11-12 17:51:26,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553421185] [2024-11-12 17:51:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553421185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:26,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:26,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:51:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239127824] [2024-11-12 17:51:26,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:26,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:51:26,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:51:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:51:26,752 INFO L87 Difference]: Start difference. First operand 280 states and 350 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:27,345 INFO L93 Difference]: Finished difference Result 313 states and 362 transitions. [2024-11-12 17:51:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:51:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-12 17:51:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:27,347 INFO L225 Difference]: With dead ends: 313 [2024-11-12 17:51:27,347 INFO L226 Difference]: Without dead ends: 312 [2024-11-12 17:51:27,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-12 17:51:27,347 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 91 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:27,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 449 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 17:51:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-12 17:51:27,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 282. [2024-11-12 17:51:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 192 states have (on average 1.5364583333333333) internal successors, (295), 245 states have internal predecessors, (295), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (31), 27 states have call predecessors, (31), 26 states have call successors, (31) [2024-11-12 17:51:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 352 transitions. [2024-11-12 17:51:27,360 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 352 transitions. Word has length 33 [2024-11-12 17:51:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:27,360 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 352 transitions. [2024-11-12 17:51:27,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:51:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 352 transitions. [2024-11-12 17:51:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-12 17:51:27,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:27,361 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:51:27,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 17:51:27,561 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 [2024-11-12 17:51:27,562 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_47_to_56_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:27,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1491886039, now seen corresponding path program 1 times [2024-11-12 17:51:27,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988750067] [2024-11-12 17:51:27,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:27,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950993494] [2024-11-12 17:51:27,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:27,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:27,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:27,601 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) [2024-11-12 17:51:27,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 17:51:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:27,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-12 17:51:27,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:27,834 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 [2024-11-12 17:51:27,908 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 1 [2024-11-12 17:51:28,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 17:51:28,144 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 [2024-11-12 17:51:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:51:28,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:51:28,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988750067] [2024-11-12 17:51:28,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950993494] [2024-11-12 17:51:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950993494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:51:28,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:51:28,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-12 17:51:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187902507] [2024-11-12 17:51:28,214 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:51:28,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 17:51:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 17:51:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-12 17:51:28,215 INFO L87 Difference]: Start difference. First operand 282 states and 352 transitions. Second operand has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2024-11-12 17:51:32,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:51:36,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:51:40,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-12 17:51:44,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:51:48,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-12 17:51:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:48,844 INFO L93 Difference]: Finished difference Result 311 states and 355 transitions. [2024-11-12 17:51:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 17:51:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 38 [2024-11-12 17:51:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:48,846 INFO L225 Difference]: With dead ends: 311 [2024-11-12 17:51:48,846 INFO L226 Difference]: Without dead ends: 310 [2024-11-12 17:51:48,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-12 17:51:48,849 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 342 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:48,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1238 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 443 Invalid, 5 Unknown, 0 Unchecked, 20.5s Time] [2024-11-12 17:51:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-12 17:51:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 243. [2024-11-12 17:51:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.51875) internal successors, (243), 211 states have internal predecessors, (243), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2024-11-12 17:51:48,866 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 38 [2024-11-12 17:51:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:48,866 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2024-11-12 17:51:48,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2024-11-12 17:51:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2024-11-12 17:51:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-12 17:51:48,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:48,867 INFO L218 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] [2024-11-12 17:51:48,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 17:51:49,071 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 [2024-11-12 17:51:49,072 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_47_to_56_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)] === [2024-11-12 17:51:49,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 996173098, now seen corresponding path program 1 times [2024-11-12 17:51:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:49,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484099593] [2024-11-12 17:51:49,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:49,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:49,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039493786] [2024-11-12 17:51:49,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:49,097 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) [2024-11-12 17:51:49,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 17:51:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:49,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-12 17:51:49,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:49,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:51:49,331 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 [2024-11-12 17:51:49,527 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 [2024-11-12 17:51:49,530 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 [2024-11-12 17:51:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:51:49,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 17:51:49,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:49,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484099593] [2024-11-12 17:51:49,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039493786] [2024-11-12 17:51:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039493786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 17:51:49,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 17:51:49,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-12 17:51:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196694713] [2024-11-12 17:51:49,921 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 17:51:49,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 17:51:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 17:51:49,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-12 17:51:49,922 INFO L87 Difference]: Start difference. First operand 243 states and 288 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) [2024-11-12 17:51:53,939 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] [2024-11-12 17:51:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:51:54,603 INFO L93 Difference]: Finished difference Result 267 states and 288 transitions. [2024-11-12 17:51:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 17:51:54,604 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 [2024-11-12 17:51:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:51:54,605 INFO L225 Difference]: With dead ends: 267 [2024-11-12 17:51:54,605 INFO L226 Difference]: Without dead ends: 266 [2024-11-12 17:51:54,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-12 17:51:54,606 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 282 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-12 17:51:54,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1577 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-12 17:51:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-12 17:51:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 243. [2024-11-12 17:51:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.5125) internal successors, (242), 211 states have internal predecessors, (242), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:51:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2024-11-12 17:51:54,622 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 39 [2024-11-12 17:51:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:51:54,622 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2024-11-12 17:51:54,622 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) [2024-11-12 17:51:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2024-11-12 17:51:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-12 17:51:54,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:51:54,622 INFO L218 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] [2024-11-12 17:51:54,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 17:51:54,823 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 [2024-11-12 17:51:54,823 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_47_to_56_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:51:54,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:51:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash 816595019, now seen corresponding path program 1 times [2024-11-12 17:51:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:51:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697067293] [2024-11-12 17:51:54,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:51:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:51:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002605005] [2024-11-12 17:51:54,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:51:54,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:51:54,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:51:54,859 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) [2024-11-12 17:51:54,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 17:51:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:51:55,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-12 17:51:55,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:51:55,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:51:55,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:51:55,281 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 [2024-11-12 17:51:55,284 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 [2024-11-12 17:51:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 17:51:55,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:51:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:51:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697067293] [2024-11-12 17:51:55,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:51:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002605005] [2024-11-12 17:51:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002605005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:51:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:51:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-12 17:51:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956826582] [2024-11-12 17:51:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:51:55,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 17:51:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:51:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 17:51:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-12 17:51:55,303 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 17:51:59,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:52:03,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-12 17:52:07,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-12 17:52:11,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-12 17:52:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:11,853 INFO L93 Difference]: Finished difference Result 270 states and 289 transitions. [2024-11-12 17:52:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 17:52:11,854 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2024-11-12 17:52:11,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:11,855 INFO L225 Difference]: With dead ends: 270 [2024-11-12 17:52:11,855 INFO L226 Difference]: Without dead ends: 269 [2024-11-12 17:52:11,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-12 17:52:11,856 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 166 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:11,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1533 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 419 Invalid, 4 Unknown, 0 Unchecked, 16.5s Time] [2024-11-12 17:52:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-12 17:52:11,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 243. [2024-11-12 17:52:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.50625) internal successors, (241), 211 states have internal predecessors, (241), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-12 17:52:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2024-11-12 17:52:11,869 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 40 [2024-11-12 17:52:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:11,869 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2024-11-12 17:52:11,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 17:52:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2024-11-12 17:52:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-12 17:52:11,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:11,870 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:11,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 17:52:12,074 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 [2024-11-12 17:52:12,075 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_47_to_56_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:52:12,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash -455358132, now seen corresponding path program 1 times [2024-11-12 17:52:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:12,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563392959] [2024-11-12 17:52:12,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:12,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388011345] [2024-11-12 17:52:12,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:12,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:12,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:12,098 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) [2024-11-12 17:52:12,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 17:52:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:12,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-12 17:52:12,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:12,313 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 [2024-11-12 17:52:12,315 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 [2024-11-12 17:52:12,389 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 [2024-11-12 17:52:12,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 17:52:12,402 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 [2024-11-12 17:52:12,411 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 [2024-11-12 17:52:12,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:12,524 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 [2024-11-12 17:52:12,527 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 [2024-11-12 17:52:12,634 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 [2024-11-12 17:52:12,641 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 [2024-11-12 17:52:12,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:52:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 17:52:12,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:12,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563392959] [2024-11-12 17:52:12,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388011345] [2024-11-12 17:52:12,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388011345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:12,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:12,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-12 17:52:12,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766555899] [2024-11-12 17:52:12,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:12,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 17:52:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:12,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 17:52:12,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2024-11-12 17:52:12,985 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 20 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 17:52:17,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:52:21,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:52:25,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:52:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:26,254 INFO L93 Difference]: Finished difference Result 335 states and 361 transitions. [2024-11-12 17:52:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 17:52:26,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2024-11-12 17:52:26,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:26,282 INFO L225 Difference]: With dead ends: 335 [2024-11-12 17:52:26,282 INFO L226 Difference]: Without dead ends: 334 [2024-11-12 17:52:26,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 17:52:26,283 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 460 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 65 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:26,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1760 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 789 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2024-11-12 17:52:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-12 17:52:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 288. [2024-11-12 17:52:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.5076142131979695) internal successors, (297), 250 states have internal predecessors, (297), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-12 17:52:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 355 transitions. [2024-11-12 17:52:26,301 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 355 transitions. Word has length 41 [2024-11-12 17:52:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:26,301 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 355 transitions. [2024-11-12 17:52:26,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 17:52:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 355 transitions. [2024-11-12 17:52:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 17:52:26,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:26,302 INFO L218 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] [2024-11-12 17:52:26,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 17:52:26,502 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 [2024-11-12 17:52:26,502 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_47_to_56_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-12 17:52:26,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1231200147, now seen corresponding path program 1 times [2024-11-12 17:52:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:26,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291755703] [2024-11-12 17:52:26,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198634418] [2024-11-12 17:52:26,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:26,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:26,526 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) [2024-11-12 17:52:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 17:52:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:26,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-12 17:52:26,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:26,706 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 [2024-11-12 17:52:26,746 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 [2024-11-12 17:52:26,750 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 [2024-11-12 17:52:27,014 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 [2024-11-12 17:52:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:52:27,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:27,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291755703] [2024-11-12 17:52:27,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198634418] [2024-11-12 17:52:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198634418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:27,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-12 17:52:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926936419] [2024-11-12 17:52:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:27,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 17:52:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 17:52:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-12 17:52:27,042 INFO L87 Difference]: Start difference. First operand 288 states and 355 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:52:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:27,523 INFO L93 Difference]: Finished difference Result 310 states and 355 transitions. [2024-11-12 17:52:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 17:52:27,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-12 17:52:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:27,525 INFO L225 Difference]: With dead ends: 310 [2024-11-12 17:52:27,525 INFO L226 Difference]: Without dead ends: 309 [2024-11-12 17:52:27,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-12 17:52:27,526 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 332 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:27,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 875 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:52:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-12 17:52:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 288. [2024-11-12 17:52:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.49746192893401) internal successors, (295), 250 states have internal predecessors, (295), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-12 17:52:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 353 transitions. [2024-11-12 17:52:27,549 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 353 transitions. Word has length 42 [2024-11-12 17:52:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:27,550 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 353 transitions. [2024-11-12 17:52:27,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-12 17:52:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 353 transitions. [2024-11-12 17:52:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-12 17:52:27,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:27,550 INFO L218 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] [2024-11-12 17:52:27,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 17:52:27,751 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 [2024-11-12 17:52:27,752 INFO L396 AbstractCegarLoop]: === Iteration 20 === 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)] === [2024-11-12 17:52:27,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 487501166, now seen corresponding path program 1 times [2024-11-12 17:52:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:27,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561375422] [2024-11-12 17:52:27,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:27,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153736173] [2024-11-12 17:52:27,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:27,834 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) [2024-11-12 17:52:27,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 17:52:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:28,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 178 conjuncts are in the unsatisfiable core [2024-11-12 17:52:28,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:28,045 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 [2024-11-12 17:52:28,047 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 [2024-11-12 17:52:28,089 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 [2024-11-12 17:52:28,093 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 [2024-11-12 17:52:28,098 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 [2024-11-12 17:52:28,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:52:28,198 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 [2024-11-12 17:52:28,202 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 [2024-11-12 17:52:28,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:52:28,302 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 [2024-11-12 17:52:46,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-12 17:52:46,608 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 [2024-11-12 17:52:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 17:52:46,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561375422] [2024-11-12 17:52:46,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153736173] [2024-11-12 17:52:46,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153736173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:46,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:46,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-12 17:52:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573055044] [2024-11-12 17:52:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:46,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 17:52:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 17:52:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=221, Unknown=4, NotChecked=0, Total=272 [2024-11-12 17:52:46,655 INFO L87 Difference]: Start difference. First operand 288 states and 353 transitions. Second operand has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)