./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b80e2ef69643fec3bd55c601a96e927d74716f095bc90a0498778af08019697 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:11:38,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:11:38,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:11:38,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:11:38,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:11:38,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:11:38,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:11:38,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:11:38,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:11:38,723 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:11:38,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:11:38,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:11:38,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:11:38,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:11:38,725 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:11:38,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:11:38,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:11:38,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:11:38,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:11:38,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:11:38,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:11:38,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:11:38,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:11:38,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:11:38,730 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:11:38,730 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:11:38,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:11:38,732 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:11:38,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:11:38,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:11:38,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:11:38,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:11:38,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:11:38,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:11:38,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:38,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:11:38,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:11:38,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:11:38,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:11:38,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:11:38,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:11:38,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:11:38,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:11:38,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:11:38,738 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b80e2ef69643fec3bd55c601a96e927d74716f095bc90a0498778af08019697 [2024-11-19 11:11:38,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:11:38,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:11:38,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:11:38,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:11:38,978 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:11:38,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c [2024-11-19 11:11:40,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:11:40,359 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:11:40,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c [2024-11-19 11:11:40,365 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd9f308d/934bfb76f09340cf9ff5ae192e8e4ddf/FLAG2c9433407 [2024-11-19 11:11:40,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd9f308d/934bfb76f09340cf9ff5ae192e8e4ddf [2024-11-19 11:11:40,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:11:40,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:11:40,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:40,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:11:40,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:11:40,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eef0906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40, skipping insertion in model container [2024-11-19 11:11:40,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,409 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:11:40,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:40,610 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:11:40,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:40,680 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:11:40,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40 WrapperNode [2024-11-19 11:11:40,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:40,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:40,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:11:40,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:11:40,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,734 INFO L138 Inliner]: procedures = 18, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2024-11-19 11:11:40,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:40,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:11:40,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:11:40,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:11:40,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,766 INFO L175 MemorySlicer]: Split 85 memory accesses to 14 slices as follows [2, 8, 5, 6, 6, 5, 6, 6, 7, 7, 7, 9, 6, 5]. 11 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 0, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2]. [2024-11-19 11:11:40,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:11:40,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:11:40,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:11:40,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:11:40,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (1/1) ... [2024-11-19 11:11:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:40,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:40,812 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) [2024-11-19 11:11:40,818 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 [2024-11-19 11:11:40,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:11:40,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 11:11:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 11:11:40,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:11:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:11:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:11:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:11:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:11:40,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 11:11:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-19 11:11:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-19 11:11:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-19 11:11:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-19 11:11:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-19 11:11:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:11:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-19 11:11:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-19 11:11:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:11:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:11:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 11:11:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-19 11:11:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-19 11:11:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-19 11:11:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-19 11:11:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:11:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:11:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 11:11:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-19 11:11:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-19 11:11:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-19 11:11:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-19 11:11:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:11:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:11:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:11:41,021 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:11:41,023 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:11:41,506 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-11-19 11:11:41,506 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:11:41,520 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:11:41,523 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 11:11:41,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:41 BoogieIcfgContainer [2024-11-19 11:11:41,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:11:41,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:11:41,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:11:41,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:11:41,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:11:40" (1/3) ... [2024-11-19 11:11:41,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d20856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:41, skipping insertion in model container [2024-11-19 11:11:41,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:40" (2/3) ... [2024-11-19 11:11:41,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d20856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:41, skipping insertion in model container [2024-11-19 11:11:41,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:41" (3/3) ... [2024-11-19 11:11:41,530 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3.c [2024-11-19 11:11:41,543 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:11:41,543 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-19 11:11:41,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:11:41,608 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;@1019b825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:11:41,609 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-19 11:11:41,613 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) [2024-11-19 11:11:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 11:11:41,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:41,618 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:41,619 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)] === [2024-11-19 11:11:41,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 284442776, now seen corresponding path program 1 times [2024-11-19 11:11:41,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:41,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072189990] [2024-11-19 11:11:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072189990] [2024-11-19 11:11:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072189990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136099149] [2024-11-19 11:11:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:41,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:41,846 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) [2024-11-19 11:11:41,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:11:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:41,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 11:11:41,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:41,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:41,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136099149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:41,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:41,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 11:11:41,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937331661] [2024-11-19 11:11:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:41,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 11:11:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 11:11:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:11:42,001 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-11-19 11:11:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:42,027 INFO L93 Difference]: Finished difference Result 302 states and 344 transitions. [2024-11-19 11:11:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 11:11:42,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 [2024-11-19 11:11:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:42,035 INFO L225 Difference]: With dead ends: 302 [2024-11-19 11:11:42,035 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 11:11:42,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:11:42,041 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:42,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 11:11:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-19 11:11:42,071 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) [2024-11-19 11:11:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2024-11-19 11:11:42,078 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 21 [2024-11-19 11:11:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:42,079 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2024-11-19 11:11:42,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-11-19 11:11:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2024-11-19 11:11:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 11:11:42,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:42,080 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:42,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:11:42,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 11:11:42,282 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)] === [2024-11-19 11:11:42,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2045693892, now seen corresponding path program 1 times [2024-11-19 11:11:42,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:42,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065818706] [2024-11-19 11:11:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:42,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:11:42,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:42,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065818706] [2024-11-19 11:11:42,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065818706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:42,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 11:11:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860031094] [2024-11-19 11:11:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:42,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:11:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:11:42,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:11:42,748 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) [2024-11-19 11:11:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:43,493 INFO L93 Difference]: Finished difference Result 177 states and 186 transitions. [2024-11-19 11:11:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:11:43,494 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 [2024-11-19 11:11:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:43,496 INFO L225 Difference]: With dead ends: 177 [2024-11-19 11:11:43,496 INFO L226 Difference]: Without dead ends: 148 [2024-11-19 11:11:43,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:11:43,497 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:43,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 469 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 11:11:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-19 11:11:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-19 11:11:43,507 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) [2024-11-19 11:11:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2024-11-19 11:11:43,508 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 22 [2024-11-19 11:11:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:43,509 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2024-11-19 11:11:43,509 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) [2024-11-19 11:11:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2024-11-19 11:11:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 11:11:43,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:43,510 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:43,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:11:43,510 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)] === [2024-11-19 11:11:43,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1803332426, now seen corresponding path program 1 times [2024-11-19 11:11:43,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:43,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375200342] [2024-11-19 11:11:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:43,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:43,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432524925] [2024-11-19 11:11:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:43,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:43,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:43,566 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) [2024-11-19 11:11:43,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:11:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:43,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 11:11:43,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:43,763 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 [2024-11-19 11:11:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:43,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375200342] [2024-11-19 11:11:43,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432524925] [2024-11-19 11:11:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432524925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:43,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:43,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 11:11:43,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587782099] [2024-11-19 11:11:43,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:43,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:11:43,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:11:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:11:43,860 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:44,085 INFO L93 Difference]: Finished difference Result 241 states and 258 transitions. [2024-11-19 11:11:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 11:11:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-19 11:11:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:44,087 INFO L225 Difference]: With dead ends: 241 [2024-11-19 11:11:44,088 INFO L226 Difference]: Without dead ends: 237 [2024-11-19 11:11:44,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:11:44,090 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 165 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:44,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1175 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:11:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-19 11:11:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 202. [2024-11-19 11:11:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 124 states have (on average 1.6451612903225807) internal successors, (204), 178 states have internal predecessors, (204), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-19 11:11:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 245 transitions. [2024-11-19 11:11:44,112 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 245 transitions. Word has length 26 [2024-11-19 11:11:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:44,113 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 245 transitions. [2024-11-19 11:11:44,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 245 transitions. [2024-11-19 11:11:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 11:11:44,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:44,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:44,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:44,319 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,SelfDestructingSolverStorable2 [2024-11-19 11:11:44,320 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)] === [2024-11-19 11:11:44,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1800901574, now seen corresponding path program 1 times [2024-11-19 11:11:44,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:44,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376715579] [2024-11-19 11:11:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:44,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:44,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732207080] [2024-11-19 11:11:44,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:44,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:44,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:44,376 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) [2024-11-19 11:11:44,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:11:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:44,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 11:11:44,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:44,509 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 [2024-11-19 11:11:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:44,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:44,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376715579] [2024-11-19 11:11:44,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732207080] [2024-11-19 11:11:44,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732207080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:44,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:44,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561704899] [2024-11-19 11:11:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:44,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:44,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:11:44,590 INFO L87 Difference]: Start difference. First operand 202 states and 245 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:44,724 INFO L93 Difference]: Finished difference Result 241 states and 257 transitions. [2024-11-19 11:11:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:11:44,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-19 11:11:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:44,725 INFO L225 Difference]: With dead ends: 241 [2024-11-19 11:11:44,726 INFO L226 Difference]: Without dead ends: 239 [2024-11-19 11:11:44,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 11:11:44,726 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 100 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:44,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 766 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-19 11:11:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 209. [2024-11-19 11:11:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.6153846153846154) internal successors, (210), 183 states have internal predecessors, (210), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-19 11:11:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 251 transitions. [2024-11-19 11:11:44,737 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 251 transitions. Word has length 26 [2024-11-19 11:11:44,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:44,738 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 251 transitions. [2024-11-19 11:11:44,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 251 transitions. [2024-11-19 11:11:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 11:11:44,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:44,739 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:44,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:11:44,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:44,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === 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)] === [2024-11-19 11:11:44,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2130642284, now seen corresponding path program 1 times [2024-11-19 11:11:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:44,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412817169] [2024-11-19 11:11:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851062373] [2024-11-19 11:11:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:44,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:44,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:44,977 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) [2024-11-19 11:11:44,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:11:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:45,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-19 11:11:45,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:45,139 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 [2024-11-19 11:11:45,232 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 [2024-11-19 11:11:45,364 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 [2024-11-19 11:11:45,370 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 [2024-11-19 11:11:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:45,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:46,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412817169] [2024-11-19 11:11:46,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851062373] [2024-11-19 11:11:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851062373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:46,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:46,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-19 11:11:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492015594] [2024-11-19 11:11:46,039 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:46,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:11:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:11:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:11:46,040 INFO L87 Difference]: Start difference. First operand 209 states and 251 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) [2024-11-19 11:11:50,047 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] [2024-11-19 11:11:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:50,534 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2024-11-19 11:11:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 11:11:50,535 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 [2024-11-19 11:11:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:50,536 INFO L225 Difference]: With dead ends: 239 [2024-11-19 11:11:50,536 INFO L226 Difference]: Without dead ends: 238 [2024-11-19 11:11:50,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-11-19 11:11:50,537 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 351 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:50,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1415 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 441 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-19 11:11:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-19 11:11:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2024-11-19 11:11:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 133 states have (on average 1.593984962406015) internal successors, (212), 186 states have internal predecessors, (212), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-19 11:11:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 253 transitions. [2024-11-19 11:11:50,558 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 253 transitions. Word has length 28 [2024-11-19 11:11:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:50,558 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 253 transitions. [2024-11-19 11:11:50,558 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) [2024-11-19 11:11:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 253 transitions. [2024-11-19 11:11:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 11:11:50,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:50,559 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:50,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:50,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:50,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === 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)] === [2024-11-19 11:11:50,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -205404088, now seen corresponding path program 1 times [2024-11-19 11:11:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648047502] [2024-11-19 11:11:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:51,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:51,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648047502] [2024-11-19 11:11:51,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648047502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:51,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:51,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:51,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758776599] [2024-11-19 11:11:51,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:51,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:51,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:51,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:51,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:11:51,023 INFO L87 Difference]: Start difference. First operand 213 states and 253 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:51,080 INFO L93 Difference]: Finished difference Result 216 states and 257 transitions. [2024-11-19 11:11:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:11:51,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 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 [2024-11-19 11:11:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:51,082 INFO L225 Difference]: With dead ends: 216 [2024-11-19 11:11:51,082 INFO L226 Difference]: Without dead ends: 215 [2024-11-19 11:11:51,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:51,083 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 5 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:51,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 726 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-19 11:11:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2024-11-19 11:11:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 134 states have (on average 1.5895522388059702) internal successors, (213), 187 states have internal predecessors, (213), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-19 11:11:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2024-11-19 11:11:51,092 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 28 [2024-11-19 11:11:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:51,093 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2024-11-19 11:11:51,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2024-11-19 11:11:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 11:11:51,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:51,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:51,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 11:11:51,094 INFO L396 AbstractCegarLoop]: === Iteration 7 === 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)] === [2024-11-19 11:11:51,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1625401405, now seen corresponding path program 1 times [2024-11-19 11:11:51,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:51,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446291426] [2024-11-19 11:11:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:51,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986950360] [2024-11-19 11:11:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:51,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:51,138 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) [2024-11-19 11:11:51,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:11:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:51,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-19 11:11:51,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:51,306 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 [2024-11-19 11:11:51,448 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 [2024-11-19 11:11:51,454 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 [2024-11-19 11:11:51,462 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 [2024-11-19 11:11:51,469 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 [2024-11-19 11:11:51,600 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 [2024-11-19 11:11:51,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 11:11:51,717 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 [2024-11-19 11:11:51,724 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 [2024-11-19 11:11:51,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:11:51,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 11:11:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:11:51,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:51,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446291426] [2024-11-19 11:11:51,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986950360] [2024-11-19 11:11:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986950360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 11:11:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720198899] [2024-11-19 11:11:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:51,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:11:51,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:11:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:11:51,915 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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) [2024-11-19 11:11:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:53,146 INFO L93 Difference]: Finished difference Result 292 states and 339 transitions. [2024-11-19 11:11:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 11:11:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 29 [2024-11-19 11:11:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:53,148 INFO L225 Difference]: With dead ends: 292 [2024-11-19 11:11:53,148 INFO L226 Difference]: Without dead ends: 291 [2024-11-19 11:11:53,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2024-11-19 11:11:53,149 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 302 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:53,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1729 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 11:11:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-19 11:11:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 264. [2024-11-19 11:11:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 175 states have (on average 1.6) internal successors, (280), 230 states have internal predecessors, (280), 27 states have call successors, (27), 12 states have call predecessors, (27), 12 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-11-19 11:11:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 335 transitions. [2024-11-19 11:11:53,163 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 335 transitions. Word has length 29 [2024-11-19 11:11:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:53,164 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 335 transitions. [2024-11-19 11:11:53,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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) [2024-11-19 11:11:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 335 transitions. [2024-11-19 11:11:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 11:11:53,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:53,166 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:53,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 11:11:53,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:53,367 INFO L396 AbstractCegarLoop]: === Iteration 8 === 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)] === [2024-11-19 11:11:53,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2072559316, now seen corresponding path program 1 times [2024-11-19 11:11:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651067856] [2024-11-19 11:11:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:53,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807883703] [2024-11-19 11:11:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:53,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:53,423 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) [2024-11-19 11:11:53,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:11:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:53,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 11:11:53,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:53,565 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 [2024-11-19 11:11:53,585 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 [2024-11-19 11:11:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:53,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:53,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651067856] [2024-11-19 11:11:53,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807883703] [2024-11-19 11:11:53,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807883703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:53,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:53,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:11:53,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872803201] [2024-11-19 11:11:53,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:53,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:11:53,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:11:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:53,650 INFO L87 Difference]: Start difference. First operand 264 states and 335 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) [2024-11-19 11:11:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:54,346 INFO L93 Difference]: Finished difference Result 300 states and 346 transitions. [2024-11-19 11:11:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:11:54,347 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 [2024-11-19 11:11:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:54,348 INFO L225 Difference]: With dead ends: 300 [2024-11-19 11:11:54,348 INFO L226 Difference]: Without dead ends: 299 [2024-11-19 11:11:54,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:11:54,349 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 75 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:54,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 505 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 11:11:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-19 11:11:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 275. [2024-11-19 11:11:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 184 states have (on average 1.5706521739130435) internal successors, (289), 238 states have internal predecessors, (289), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:11:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 345 transitions. [2024-11-19 11:11:54,362 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 345 transitions. Word has length 29 [2024-11-19 11:11:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:54,362 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 345 transitions. [2024-11-19 11:11:54,362 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) [2024-11-19 11:11:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 345 transitions. [2024-11-19 11:11:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:11:54,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:54,363 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:54,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:54,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:54,564 INFO L396 AbstractCegarLoop]: === Iteration 9 === 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)] === [2024-11-19 11:11:54,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1152163954, now seen corresponding path program 1 times [2024-11-19 11:11:54,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:54,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086382476] [2024-11-19 11:11:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:54,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:54,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707812563] [2024-11-19 11:11:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:54,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:54,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:54,600 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) [2024-11-19 11:11:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 11:11:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:54,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-19 11:11:54,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:54,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:54,862 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 [2024-11-19 11:11:54,994 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 [2024-11-19 11:11:54,998 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 [2024-11-19 11:11:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:55,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086382476] [2024-11-19 11:12:02,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707812563] [2024-11-19 11:12:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707812563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:02,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:12:02,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-19 11:12:02,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516862455] [2024-11-19 11:12:02,010 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:02,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:12:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:12:02,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=576, Unknown=1, NotChecked=0, Total=650 [2024-11-19 11:12:02,011 INFO L87 Difference]: Start difference. First operand 275 states and 345 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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) [2024-11-19 11:12:06,034 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] [2024-11-19 11:12:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:07,083 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2024-11-19 11:12:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:12:07,084 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 30 [2024-11-19 11:12:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:07,085 INFO L225 Difference]: With dead ends: 300 [2024-11-19 11:12:07,085 INFO L226 Difference]: Without dead ends: 299 [2024-11-19 11:12:07,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=131, Invalid=990, Unknown=1, NotChecked=0, Total=1122 [2024-11-19 11:12:07,087 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 281 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:07,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1665 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 524 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-19 11:12:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-19 11:12:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 275. [2024-11-19 11:12:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 184 states have (on average 1.559782608695652) internal successors, (287), 238 states have internal predecessors, (287), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 343 transitions. [2024-11-19 11:12:07,103 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 343 transitions. Word has length 30 [2024-11-19 11:12:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:07,103 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 343 transitions. [2024-11-19 11:12:07,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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) [2024-11-19 11:12:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 343 transitions. [2024-11-19 11:12:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:12:07,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:07,104 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:07,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 11:12:07,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:07,304 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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)] === [2024-11-19 11:12:07,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash 175170762, now seen corresponding path program 1 times [2024-11-19 11:12:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:07,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769179295] [2024-11-19 11:12:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:07,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:07,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95066080] [2024-11-19 11:12:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:07,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:07,345 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) [2024-11-19 11:12:07,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 11:12:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:07,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 11:12:07,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:07,505 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 [2024-11-19 11:12:07,522 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 [2024-11-19 11:12:07,585 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 [2024-11-19 11:12:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:12:07,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:07,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769179295] [2024-11-19 11:12:07,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95066080] [2024-11-19 11:12:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95066080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:07,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:12:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390100039] [2024-11-19 11:12:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:07,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:12:07,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:07,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:12:07,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:07,600 INFO L87 Difference]: Start difference. First operand 275 states and 343 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-11-19 11:12:12,205 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] [2024-11-19 11:12:16,217 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] [2024-11-19 11:12:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:16,242 INFO L93 Difference]: Finished difference Result 313 states and 361 transitions. [2024-11-19 11:12:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:12:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 30 [2024-11-19 11:12:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:16,244 INFO L225 Difference]: With dead ends: 313 [2024-11-19 11:12:16,244 INFO L226 Difference]: Without dead ends: 312 [2024-11-19 11:12:16,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:12:16,245 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 121 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:16,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 447 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2024-11-19 11:12:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-19 11:12:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 276. [2024-11-19 11:12:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 239 states have internal predecessors, (288), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 344 transitions. [2024-11-19 11:12:16,256 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 344 transitions. Word has length 30 [2024-11-19 11:12:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:16,256 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 344 transitions. [2024-11-19 11:12:16,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-11-19 11:12:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 344 transitions. [2024-11-19 11:12:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 11:12:16,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:16,257 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:16,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 11:12:16,461 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,SelfDestructingSolverStorable9 [2024-11-19 11:12:16,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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)] === [2024-11-19 11:12:16,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1357344161, now seen corresponding path program 1 times [2024-11-19 11:12:16,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:16,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118876972] [2024-11-19 11:12:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261771877] [2024-11-19 11:12:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:16,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:16,487 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) [2024-11-19 11:12:16,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 11:12:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:16,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 175 conjuncts are in the unsatisfiable core [2024-11-19 11:12:16,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:16,657 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 [2024-11-19 11:12:16,660 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 [2024-11-19 11:12:16,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 11:12:16,698 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 [2024-11-19 11:12:16,704 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 [2024-11-19 11:12:16,709 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 [2024-11-19 11:12:16,839 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 [2024-11-19 11:12:16,843 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 [2024-11-19 11:12:16,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:16,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:16,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 11:12:17,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:12:17,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:17,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118876972] [2024-11-19 11:12:17,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261771877] [2024-11-19 11:12:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261771877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:17,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:17,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 11:12:17,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761198629] [2024-11-19 11:12:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:17,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:12:17,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:12:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:12:17,032 INFO L87 Difference]: Start difference. First operand 276 states and 344 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 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) [2024-11-19 11:12:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:17,562 INFO L93 Difference]: Finished difference Result 299 states and 344 transitions. [2024-11-19 11:12:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:12:17,563 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), 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 [2024-11-19 11:12:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:17,564 INFO L225 Difference]: With dead ends: 299 [2024-11-19 11:12:17,564 INFO L226 Difference]: Without dead ends: 298 [2024-11-19 11:12:17,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:12:17,565 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 288 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:17,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1194 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:12:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-19 11:12:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 276. [2024-11-19 11:12:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 239 states have internal predecessors, (287), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 343 transitions. [2024-11-19 11:12:17,576 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 343 transitions. Word has length 31 [2024-11-19 11:12:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:17,576 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 343 transitions. [2024-11-19 11:12:17,576 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), 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) [2024-11-19 11:12:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 343 transitions. [2024-11-19 11:12:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 11:12:17,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:17,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:17,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 11:12:17,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:17,777 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_70_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-19 11:12:17,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1135326446, now seen corresponding path program 1 times [2024-11-19 11:12:17,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:17,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996994416] [2024-11-19 11:12:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:17,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:17,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637999043] [2024-11-19 11:12:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:17,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:17,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:17,800 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) [2024-11-19 11:12:17,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 11:12:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:17,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 11:12:17,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:17,976 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 [2024-11-19 11:12:17,990 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 [2024-11-19 11:12:18,040 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 [2024-11-19 11:12:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:12:18,049 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:18,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996994416] [2024-11-19 11:12:18,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637999043] [2024-11-19 11:12:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637999043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:18,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:18,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:12:18,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229470167] [2024-11-19 11:12:18,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:18,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:12:18,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:18,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:12:18,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:18,051 INFO L87 Difference]: Start difference. First operand 276 states and 343 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:12:22,573 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] [2024-11-19 11:12:26,582 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] [2024-11-19 11:12:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:26,599 INFO L93 Difference]: Finished difference Result 312 states and 359 transitions. [2024-11-19 11:12:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:12:26,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-19 11:12:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:26,601 INFO L225 Difference]: With dead ends: 312 [2024-11-19 11:12:26,601 INFO L226 Difference]: Without dead ends: 311 [2024-11-19 11:12:26,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:12:26,601 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 117 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:26,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 459 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 498 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-19 11:12:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-19 11:12:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 277. [2024-11-19 11:12:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 186 states have (on average 1.5483870967741935) internal successors, (288), 240 states have internal predecessors, (288), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 344 transitions. [2024-11-19 11:12:26,614 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 344 transitions. Word has length 31 [2024-11-19 11:12:26,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:26,614 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 344 transitions. [2024-11-19 11:12:26,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:12:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 344 transitions. [2024-11-19 11:12:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 11:12:26,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:26,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:26,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 11:12:26,815 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,SelfDestructingSolverStorable11 [2024-11-19 11:12:26,816 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)] === [2024-11-19 11:12:26,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash 835381580, now seen corresponding path program 1 times [2024-11-19 11:12:26,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930742664] [2024-11-19 11:12:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:12:27,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:27,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930742664] [2024-11-19 11:12:27,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930742664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:27,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:27,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:12:27,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938535773] [2024-11-19 11:12:27,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:27,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:12:27,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:12:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:12:27,051 INFO L87 Difference]: Start difference. First operand 277 states and 344 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:12:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:27,225 INFO L93 Difference]: Finished difference Result 286 states and 354 transitions. [2024-11-19 11:12:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:12:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 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 [2024-11-19 11:12:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:27,226 INFO L225 Difference]: With dead ends: 286 [2024-11-19 11:12:27,226 INFO L226 Difference]: Without dead ends: 285 [2024-11-19 11:12:27,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:27,227 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 12 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:27,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 877 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-19 11:12:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 281. [2024-11-19 11:12:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.5526315789473684) internal successors, (295), 244 states have internal predecessors, (295), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 351 transitions. [2024-11-19 11:12:27,238 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 351 transitions. Word has length 32 [2024-11-19 11:12:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:27,238 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 351 transitions. [2024-11-19 11:12:27,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:12:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 351 transitions. [2024-11-19 11:12:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 11:12:27,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:27,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:27,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 11:12:27,239 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)] === [2024-11-19 11:12:27,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 127025328, now seen corresponding path program 1 times [2024-11-19 11:12:27,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:27,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488948308] [2024-11-19 11:12:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:27,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739704223] [2024-11-19 11:12:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:27,283 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) [2024-11-19 11:12:27,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 11:12:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:27,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 11:12:27,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:27,467 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 [2024-11-19 11:12:27,484 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 [2024-11-19 11:12:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:12:27,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488948308] [2024-11-19 11:12:27,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739704223] [2024-11-19 11:12:27,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739704223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:27,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:27,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:12:27,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534597579] [2024-11-19 11:12:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:27,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:12:27,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:12:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:27,551 INFO L87 Difference]: Start difference. First operand 281 states and 351 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) [2024-11-19 11:12:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:27,991 INFO L93 Difference]: Finished difference Result 307 states and 354 transitions. [2024-11-19 11:12:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:12:27,991 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 [2024-11-19 11:12:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:27,993 INFO L225 Difference]: With dead ends: 307 [2024-11-19 11:12:27,993 INFO L226 Difference]: Without dead ends: 306 [2024-11-19 11:12:27,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:12:27,994 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 87 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:27,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 447 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:12:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-19 11:12:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 283. [2024-11-19 11:12:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.546875) internal successors, (297), 246 states have internal predecessors, (297), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 353 transitions. [2024-11-19 11:12:28,010 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 353 transitions. Word has length 33 [2024-11-19 11:12:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:28,010 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 353 transitions. [2024-11-19 11:12:28,010 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) [2024-11-19 11:12:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 353 transitions. [2024-11-19 11:12:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 11:12:28,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:28,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:28,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 11:12:28,214 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,SelfDestructingSolverStorable13 [2024-11-19 11:12:28,215 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)] === [2024-11-19 11:12:28,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:28,215 INFO L85 PathProgramCache]: Analyzing trace with hash -248863442, now seen corresponding path program 1 times [2024-11-19 11:12:28,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:28,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781944929] [2024-11-19 11:12:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94938167] [2024-11-19 11:12:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:28,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:28,246 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) [2024-11-19 11:12:28,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 11:12:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:28,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-19 11:12:28,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:28,420 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 [2024-11-19 11:12:28,462 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 [2024-11-19 11:12:28,618 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 [2024-11-19 11:12:28,621 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 [2024-11-19 11:12:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:12:28,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781944929] [2024-11-19 11:12:28,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94938167] [2024-11-19 11:12:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94938167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:28,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:12:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-19 11:12:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170065352] [2024-11-19 11:12:28,679 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:28,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:12:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:12:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-19 11:12:28,680 INFO L87 Difference]: Start difference. First operand 283 states and 353 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) [2024-11-19 11:12:32,689 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] [2024-11-19 11:12:36,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:12:40,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 11:12:45,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:12:49,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 11:12:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:49,481 INFO L93 Difference]: Finished difference Result 308 states and 353 transitions. [2024-11-19 11:12:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:12:49,482 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 [2024-11-19 11:12:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:49,483 INFO L225 Difference]: With dead ends: 308 [2024-11-19 11:12:49,483 INFO L226 Difference]: Without dead ends: 307 [2024-11-19 11:12:49,484 INFO L431 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 [2024-11-19 11:12:49,486 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 294 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 27 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:49,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1617 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 513 Invalid, 5 Unknown, 0 Unchecked, 20.6s Time] [2024-11-19 11:12:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-19 11:12:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 283. [2024-11-19 11:12:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.5364583333333333) internal successors, (295), 246 states have internal predecessors, (295), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:12:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 351 transitions. [2024-11-19 11:12:49,511 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 351 transitions. Word has length 38 [2024-11-19 11:12:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:49,511 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 351 transitions. [2024-11-19 11:12:49,511 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) [2024-11-19 11:12:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 351 transitions. [2024-11-19 11:12:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 11:12:49,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:49,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:49,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 11:12:49,715 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,SelfDestructingSolverStorable14 [2024-11-19 11:12:49,715 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)] === [2024-11-19 11:12:49,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 875167941, now seen corresponding path program 1 times [2024-11-19 11:12:49,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:49,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73495157] [2024-11-19 11:12:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:49,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:49,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607248990] [2024-11-19 11:12:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:49,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:49,751 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) [2024-11-19 11:12:49,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 11:12:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:49,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-19 11:12:49,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:49,948 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 [2024-11-19 11:12:49,975 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 [2024-11-19 11:12:49,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 11:12:49,984 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 [2024-11-19 11:12:49,986 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 [2024-11-19 11:12:50,042 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 [2024-11-19 11:12:50,045 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 11 [2024-11-19 11:12:50,102 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 [2024-11-19 11:12:50,106 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 [2024-11-19 11:12:50,273 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 [2024-11-19 11:12:50,279 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 [2024-11-19 11:12:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:12:50,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73495157] [2024-11-19 11:12:50,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607248990] [2024-11-19 11:12:50,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607248990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:50,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:50,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-19 11:12:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084262429] [2024-11-19 11:12:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:50,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 11:12:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 11:12:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-19 11:12:50,303 INFO L87 Difference]: Start difference. First operand 283 states and 351 transitions. Second operand has 18 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:12:54,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:12:58,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:13:02,664 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] [2024-11-19 11:13:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:03,155 INFO L93 Difference]: Finished difference Result 328 states and 351 transitions. [2024-11-19 11:13:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 11:13:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-19 11:13:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:03,157 INFO L225 Difference]: With dead ends: 328 [2024-11-19 11:13:03,157 INFO L226 Difference]: Without dead ends: 327 [2024-11-19 11:13:03,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-19 11:13:03,158 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 234 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 25 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:03,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 2210 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 789 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2024-11-19 11:13:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-19 11:13:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 283. [2024-11-19 11:13:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.53125) internal successors, (294), 246 states have internal predecessors, (294), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:13:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 350 transitions. [2024-11-19 11:13:03,187 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 350 transitions. Word has length 39 [2024-11-19 11:13:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:03,187 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 350 transitions. [2024-11-19 11:13:03,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 350 transitions. [2024-11-19 11:13:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-19 11:13:03,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:03,188 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:03,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 11:13:03,388 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,SelfDestructingSolverStorable15 [2024-11-19 11:13:03,389 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)] === [2024-11-19 11:13:03,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1360402448, now seen corresponding path program 1 times [2024-11-19 11:13:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:03,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836519756] [2024-11-19 11:13:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689619976] [2024-11-19 11:13:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:03,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:03,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:03,435 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) [2024-11-19 11:13:03,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 11:13:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:03,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-19 11:13:03,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:03,660 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 [2024-11-19 11:13:03,690 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 [2024-11-19 11:13:03,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:13:03,875 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 [2024-11-19 11:13:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:13:03,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:03,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836519756] [2024-11-19 11:13:03,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:03,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689619976] [2024-11-19 11:13:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689619976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:03,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 11:13:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844974094] [2024-11-19 11:13:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:03,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:13:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:13:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:13:03,893 INFO L87 Difference]: Start difference. First operand 283 states and 350 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) [2024-11-19 11:13:07,908 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] [2024-11-19 11:13:12,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 11:13:16,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 11:13:20,275 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] [2024-11-19 11:13:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:20,402 INFO L93 Difference]: Finished difference Result 311 states and 352 transitions. [2024-11-19 11:13:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:13:20,403 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 [2024-11-19 11:13:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:20,404 INFO L225 Difference]: With dead ends: 311 [2024-11-19 11:13:20,404 INFO L226 Difference]: Without dead ends: 310 [2024-11-19 11:13:20,404 INFO L431 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 [2024-11-19 11:13:20,404 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 168 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:20,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1645 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 428 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2024-11-19 11:13:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-19 11:13:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 283. [2024-11-19 11:13:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.5208333333333333) internal successors, (292), 246 states have internal predecessors, (292), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:13:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 348 transitions. [2024-11-19 11:13:20,467 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 348 transitions. Word has length 40 [2024-11-19 11:13:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:20,467 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 348 transitions. [2024-11-19 11:13:20,467 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) [2024-11-19 11:13:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 348 transitions. [2024-11-19 11:13:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 11:13:20,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:20,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:20,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 11:13:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:20,669 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)] === [2024-11-19 11:13:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -777197017, now seen corresponding path program 1 times [2024-11-19 11:13:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952854184] [2024-11-19 11:13:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879517258] [2024-11-19 11:13:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:20,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:20,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:20,705 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) [2024-11-19 11:13:20,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 11:13:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:20,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-19 11:13:20,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:20,922 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 [2024-11-19 11:13:21,003 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 [2024-11-19 11:13:21,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:13:21,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 11:13:21,377 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 [2024-11-19 11:13:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:13:21,398 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952854184] [2024-11-19 11:13:21,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879517258] [2024-11-19 11:13:21,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879517258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 11:13:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383732170] [2024-11-19 11:13:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:21,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 11:13:21,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 11:13:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:13:21,400 INFO L87 Difference]: Start difference. First operand 283 states and 348 transitions. Second operand has 17 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:22,068 INFO L93 Difference]: Finished difference Result 310 states and 350 transitions. [2024-11-19 11:13:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 11:13:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2024-11-19 11:13:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:22,070 INFO L225 Difference]: With dead ends: 310 [2024-11-19 11:13:22,070 INFO L226 Difference]: Without dead ends: 309 [2024-11-19 11:13:22,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:13:22,070 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 354 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:22,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1241 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 11:13:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-19 11:13:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 283. [2024-11-19 11:13:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.5104166666666667) internal successors, (290), 246 states have internal predecessors, (290), 27 states have call successors, (27), 13 states have call predecessors, (27), 14 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-19 11:13:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 346 transitions. [2024-11-19 11:13:22,121 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 346 transitions. Word has length 41 [2024-11-19 11:13:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:22,122 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 346 transitions. [2024-11-19 11:13:22,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 346 transitions. [2024-11-19 11:13:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 11:13:22,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:22,122 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:22,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 11:13:22,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 11:13:22,327 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)] === [2024-11-19 11:13:22,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1676696306, now seen corresponding path program 1 times [2024-11-19 11:13:22,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:22,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421560344] [2024-11-19 11:13:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728692701] [2024-11-19 11:13:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:22,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:22,354 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) [2024-11-19 11:13:22,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 11:13:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:22,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-19 11:13:22,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:22,553 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 [2024-11-19 11:13:22,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:22,613 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 [2024-11-19 11:13:22,880 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 [2024-11-19 11:13:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:13:22,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:22,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:22,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421560344] [2024-11-19 11:13:22,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:22,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728692701] [2024-11-19 11:13:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728692701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:22,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 11:13:22,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517927866] [2024-11-19 11:13:22,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:22,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 11:13:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 11:13:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:13:22,907 INFO L87 Difference]: Start difference. First operand 283 states and 346 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)