./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 12:16:04,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:16:04,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:16:04,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:16:04,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:16:04,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:16:04,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:16:04,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:16:04,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:16:04,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:16:04,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:16:04,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:16:04,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:16:04,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:16:04,171 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:16:04,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:16:04,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:16:04,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:16:04,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:16:04,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:16:04,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:16:04,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:16:04,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:16:04,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:16:04,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:16:04,175 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:16:04,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:16:04,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:16:04,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:16:04,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:16:04,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:16:04,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:16:04,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:16:04,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:16:04,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:16:04,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:16:04,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:16:04,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:16:04,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:16:04,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:16:04,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:16:04,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:16:04,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:16:04,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:16:04,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b80e2ef69643fec3bd55c601a96e927d74716f095bc90a0498778af08019697 [2024-11-09 12:16:04,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:16:04,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:16:04,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:16:04,674 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:16:04,677 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:16:04,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c [2024-11-09 12:16:06,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:16:06,688 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:16:06,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3.c [2024-11-09 12:16:06,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfd32605/3de40434826541588499d9fb0f96421c/FLAG523b02228 [2024-11-09 12:16:06,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfd32605/3de40434826541588499d9fb0f96421c [2024-11-09 12:16:06,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:16:06,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:16:06,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:16:06,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:16:06,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:16:06,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:16:06" (1/1) ... [2024-11-09 12:16:06,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4bd517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:06, skipping insertion in model container [2024-11-09 12:16:06,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:16:06" (1/1) ... [2024-11-09 12:16:06,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:16:06,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:16:06,964 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:16:07,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:16:07,036 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:16:07,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07 WrapperNode [2024-11-09 12:16:07,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:16:07,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:16:07,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:16:07,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:16:07,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,080 INFO L138 Inliner]: procedures = 18, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2024-11-09 12:16:07,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:16:07,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:16:07,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:16:07,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:16:07,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,120 INFO L175 MemorySlicer]: Split 85 memory accesses to 14 slices as follows [2, 6, 8, 5, 7, 5, 6, 6, 7, 7, 5, 9, 6, 6]. 11 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 2, 0, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2]. [2024-11-09 12:16:07,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:16:07,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:16:07,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:16:07,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:16:07,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (1/1) ... [2024-11-09 12:16:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:16:07,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:07,197 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) [2024-11-09 12:16:07,205 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 [2024-11-09 12:16:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:16:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 12:16:07,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 12:16:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:16:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:16:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:16:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:16:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:16:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 12:16:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 12:16:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 12:16:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-09 12:16:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-09 12:16:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-09 12:16:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-09 12:16:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-09 12:16:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-09 12:16:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-09 12:16:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-09 12:16:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-09 12:16:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-09 12:16:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:16:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-09 12:16:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-09 12:16:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:16:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:16:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:16:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:16:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-09 12:16:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:16:07,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-09 12:16:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-09 12:16:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-09 12:16:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-09 12:16:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-09 12:16:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-09 12:16:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:16:07,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:16:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:16:07,479 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:16:07,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:16:08,180 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-11-09 12:16:08,181 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:16:08,204 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:16:08,204 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 12:16:08,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:16:08 BoogieIcfgContainer [2024-11-09 12:16:08,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:16:08,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:16:08,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:16:08,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:16:08,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:16:06" (1/3) ... [2024-11-09 12:16:08,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dd4875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:16:08, skipping insertion in model container [2024-11-09 12:16:08,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:16:07" (2/3) ... [2024-11-09 12:16:08,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dd4875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:16:08, skipping insertion in model container [2024-11-09 12:16:08,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:16:08" (3/3) ... [2024-11-09 12:16:08,219 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3.c [2024-11-09 12:16:08,237 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:16:08,237 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-09 12:16:08,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:16:08,315 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;@266869f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:16:08,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-09 12:16:08,321 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) [2024-11-09 12:16:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 12:16:08,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:08,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:08,329 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)] === [2024-11-09 12:16:08,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash 284442776, now seen corresponding path program 1 times [2024-11-09 12:16:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261608747] [2024-11-09 12:16:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:08,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:08,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:16:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:08,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:16:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:08,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:16:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:08,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261608747] [2024-11-09 12:16:08,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261608747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:08,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:08,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 12:16:08,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072548996] [2024-11-09 12:16:08,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:08,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 12:16:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:08,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 12:16:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:16:08,707 INFO L87 Difference]: Start difference. First operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:09,435 INFO L93 Difference]: Finished difference Result 308 states and 353 transitions. [2024-11-09 12:16:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 12:16:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-09 12:16:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:09,458 INFO L225 Difference]: With dead ends: 308 [2024-11-09 12:16:09,460 INFO L226 Difference]: Without dead ends: 152 [2024-11-09 12:16:09,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:16:09,475 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 67 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:09,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:16:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-09 12:16:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2024-11-09 12:16:09,549 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) [2024-11-09 12:16:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2024-11-09 12:16:09,567 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 21 [2024-11-09 12:16:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:09,567 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2024-11-09 12:16:09,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2024-11-09 12:16:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 12:16:09,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:09,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:09,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:16:09,569 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)] === [2024-11-09 12:16:09,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2045693892, now seen corresponding path program 1 times [2024-11-09 12:16:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:09,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589189726] [2024-11-09 12:16:09,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:09,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:10,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:16:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:10,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:16:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:10,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:16:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:16:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589189726] [2024-11-09 12:16:10,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589189726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:10,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 12:16:10,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434151634] [2024-11-09 12:16:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:10,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:10,249 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) [2024-11-09 12:16:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:11,376 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2024-11-09 12:16:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:16:11,377 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 [2024-11-09 12:16:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:11,379 INFO L225 Difference]: With dead ends: 181 [2024-11-09 12:16:11,379 INFO L226 Difference]: Without dead ends: 152 [2024-11-09 12:16:11,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-09 12:16:11,381 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 91 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:11,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 588 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 12:16:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-09 12:16:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2024-11-09 12:16:11,395 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) [2024-11-09 12:16:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2024-11-09 12:16:11,397 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 22 [2024-11-09 12:16:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:11,397 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2024-11-09 12:16:11,398 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) [2024-11-09 12:16:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2024-11-09 12:16:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:16:11,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:11,402 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] [2024-11-09 12:16:11,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:16:11,403 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)] === [2024-11-09 12:16:11,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1803332426, now seen corresponding path program 1 times [2024-11-09 12:16:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105593402] [2024-11-09 12:16:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817874798] [2024-11-09 12:16:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:11,467 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) [2024-11-09 12:16:11,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:16:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:11,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 12:16:11,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:11,713 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 [2024-11-09 12:16:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:11,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:11,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105593402] [2024-11-09 12:16:11,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817874798] [2024-11-09 12:16:11,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817874798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:11,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:11,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:16:11,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290718332] [2024-11-09 12:16:11,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:11,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:16:11,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:11,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:16:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:16:11,791 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) [2024-11-09 12:16:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:12,081 INFO L93 Difference]: Finished difference Result 241 states and 258 transitions. [2024-11-09 12:16:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:16:12,082 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 [2024-11-09 12:16:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:12,084 INFO L225 Difference]: With dead ends: 241 [2024-11-09 12:16:12,084 INFO L226 Difference]: Without dead ends: 237 [2024-11-09 12:16:12,084 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 [2024-11-09 12:16:12,085 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 165 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:12,086 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] [2024-11-09 12:16:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-09 12:16:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 202. [2024-11-09 12:16:12,100 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) [2024-11-09 12:16:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 245 transitions. [2024-11-09 12:16:12,102 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 245 transitions. Word has length 26 [2024-11-09 12:16:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:12,102 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 245 transitions. [2024-11-09 12:16:12,102 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) [2024-11-09 12:16:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 245 transitions. [2024-11-09 12:16:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:16:12,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:12,103 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:12,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 12:16:12,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:12,305 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)] === [2024-11-09 12:16:12,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1800901574, now seen corresponding path program 1 times [2024-11-09 12:16:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112168957] [2024-11-09 12:16:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:12,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717767128] [2024-11-09 12:16:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:12,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:12,366 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) [2024-11-09 12:16:12,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:16:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:12,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:16:12,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:12,550 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 [2024-11-09 12:16:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:12,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112168957] [2024-11-09 12:16:12,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717767128] [2024-11-09 12:16:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717767128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:12,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:12,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:12,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524761944] [2024-11-09 12:16:12,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:12,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:12,589 INFO L87 Difference]: Start difference. First operand 202 states and 245 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:13,045 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2024-11-09 12:16:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:13,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-09 12:16:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:13,047 INFO L225 Difference]: With dead ends: 215 [2024-11-09 12:16:13,047 INFO L226 Difference]: Without dead ends: 213 [2024-11-09 12:16:13,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:13,049 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 90 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:13,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 249 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:16:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-09 12:16:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2024-11-09 12:16:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 129 states have (on average 1.62015503875969) internal successors, (209), 182 states have internal predecessors, (209), 20 states have call successors, (20), 8 states have call predecessors, (20), 10 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 254 transitions. [2024-11-09 12:16:13,065 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 254 transitions. Word has length 26 [2024-11-09 12:16:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:13,065 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 254 transitions. [2024-11-09 12:16:13,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 254 transitions. [2024-11-09 12:16:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 12:16:13,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:13,066 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] [2024-11-09 12:16:13,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 12:16:13,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 12:16:13,267 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)] === [2024-11-09 12:16:13,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2130642284, now seen corresponding path program 1 times [2024-11-09 12:16:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527057013] [2024-11-09 12:16:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994446614] [2024-11-09 12:16:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:13,316 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) [2024-11-09 12:16:13,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:16:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:13,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 12:16:13,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:13,507 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 [2024-11-09 12:16:13,591 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 [2024-11-09 12:16:13,745 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 [2024-11-09 12:16:13,750 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 [2024-11-09 12:16:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:13,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:14,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:14,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527057013] [2024-11-09 12:16:14,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:14,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994446614] [2024-11-09 12:16:14,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994446614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:16:14,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:16:14,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-09 12:16:14,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776966933] [2024-11-09 12:16:14,670 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:14,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:16:14,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:16:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-09 12:16:14,671 INFO L87 Difference]: Start difference. First operand 209 states and 254 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:18,680 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] [2024-11-09 12:16:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:19,383 INFO L93 Difference]: Finished difference Result 241 states and 259 transitions. [2024-11-09 12:16:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 12:16:19,383 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 [2024-11-09 12:16:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:19,385 INFO L225 Difference]: With dead ends: 241 [2024-11-09 12:16:19,385 INFO L226 Difference]: Without dead ends: 240 [2024-11-09 12:16:19,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-11-09 12:16:19,387 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 296 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:19,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1529 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 12:16:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-09 12:16:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 213. [2024-11-09 12:16:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.5984848484848484) internal successors, (211), 185 states have internal predecessors, (211), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 256 transitions. [2024-11-09 12:16:19,431 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 256 transitions. Word has length 28 [2024-11-09 12:16:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:19,432 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 256 transitions. [2024-11-09 12:16:19,432 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) [2024-11-09 12:16:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 256 transitions. [2024-11-09 12:16:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 12:16:19,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:19,435 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] [2024-11-09 12:16:19,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 12:16:19,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:19,636 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)] === [2024-11-09 12:16:19,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash -205404088, now seen corresponding path program 1 times [2024-11-09 12:16:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867671815] [2024-11-09 12:16:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:16:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:16:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:16:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:20,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867671815] [2024-11-09 12:16:20,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867671815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:20,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:20,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:20,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708468679] [2024-11-09 12:16:20,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:20,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:20,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:20,138 INFO L87 Difference]: Start difference. First operand 213 states and 256 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:21,114 INFO L93 Difference]: Finished difference Result 228 states and 274 transitions. [2024-11-09 12:16:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:21,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-09 12:16:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:21,116 INFO L225 Difference]: With dead ends: 228 [2024-11-09 12:16:21,116 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 12:16:21,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:21,117 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 74 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:21,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 481 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 12:16:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 12:16:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2024-11-09 12:16:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5827338129496402) internal successors, (220), 190 states have internal predecessors, (220), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2024-11-09 12:16:21,135 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 28 [2024-11-09 12:16:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:21,136 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 265 transitions. [2024-11-09 12:16:21,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 265 transitions. [2024-11-09 12:16:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 12:16:21,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:21,139 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] [2024-11-09 12:16:21,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 12:16:21,139 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)] === [2024-11-09 12:16:21,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1625401405, now seen corresponding path program 1 times [2024-11-09 12:16:21,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184637625] [2024-11-09 12:16:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:21,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:21,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455309229] [2024-11-09 12:16:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:21,186 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) [2024-11-09 12:16:21,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:16:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:21,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-09 12:16:21,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:21,400 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 [2024-11-09 12:16:21,541 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 [2024-11-09 12:16:21,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 12:16:21,837 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 [2024-11-09 12:16:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:21,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:16:23,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:23,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184637625] [2024-11-09 12:16:23,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455309229] [2024-11-09 12:16:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455309229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:16:23,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:16:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2024-11-09 12:16:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082627147] [2024-11-09 12:16:23,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:23,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 12:16:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 12:16:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-11-09 12:16:23,285 INFO L87 Difference]: Start difference. First operand 220 states and 265 transitions. Second operand has 28 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 10 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 12:16:27,389 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] [2024-11-09 12:16:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:31,811 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2024-11-09 12:16:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 12:16:31,811 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 10 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2024-11-09 12:16:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:31,813 INFO L225 Difference]: With dead ends: 245 [2024-11-09 12:16:31,813 INFO L226 Difference]: Without dead ends: 244 [2024-11-09 12:16:31,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 12:16:31,816 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 492 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:31,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1887 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 625 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2024-11-09 12:16:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-09 12:16:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 220. [2024-11-09 12:16:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5755395683453237) internal successors, (219), 190 states have internal predecessors, (219), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2024-11-09 12:16:31,827 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 29 [2024-11-09 12:16:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:31,828 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2024-11-09 12:16:31,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 10 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 12:16:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2024-11-09 12:16:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 12:16:31,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:31,829 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] [2024-11-09 12:16:31,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:32,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:32,033 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)] === [2024-11-09 12:16:32,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2072559316, now seen corresponding path program 1 times [2024-11-09 12:16:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:32,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664963450] [2024-11-09 12:16:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:32,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430146017] [2024-11-09 12:16:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:32,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:32,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:32,066 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) [2024-11-09 12:16:32,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:16:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:32,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 12:16:32,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:32,297 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 [2024-11-09 12:16:32,300 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 [2024-11-09 12:16:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:32,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:32,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664963450] [2024-11-09 12:16:32,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430146017] [2024-11-09 12:16:32,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430146017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:32,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:32,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:16:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842280254] [2024-11-09 12:16:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:32,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:16:32,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:16:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:16:32,398 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2024-11-09 12:16:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:32,533 INFO L93 Difference]: Finished difference Result 252 states and 269 transitions. [2024-11-09 12:16:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:16:32,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 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 [2024-11-09 12:16:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:32,535 INFO L225 Difference]: With dead ends: 252 [2024-11-09 12:16:32,535 INFO L226 Difference]: Without dead ends: 249 [2024-11-09 12:16:32,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:32,537 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 83 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:32,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 748 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-09 12:16:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 220. [2024-11-09 12:16:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5611510791366907) internal successors, (217), 191 states have internal predecessors, (217), 20 states have call successors, (20), 10 states have call predecessors, (20), 11 states have return successors, (23), 21 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-09 12:16:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 260 transitions. [2024-11-09 12:16:32,554 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 260 transitions. Word has length 29 [2024-11-09 12:16:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:32,554 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 260 transitions. [2024-11-09 12:16:32,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2024-11-09 12:16:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 260 transitions. [2024-11-09 12:16:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:16:32,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:32,557 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] [2024-11-09 12:16:32,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 12:16:32,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:32,758 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)] === [2024-11-09 12:16:32,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1152163954, now seen corresponding path program 1 times [2024-11-09 12:16:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485699337] [2024-11-09 12:16:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:32,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825697468] [2024-11-09 12:16:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:32,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:32,800 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) [2024-11-09 12:16:32,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:16:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:32,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 12:16:32,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:32,965 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 [2024-11-09 12:16:32,988 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 [2024-11-09 12:16:33,119 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 [2024-11-09 12:16:33,123 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 [2024-11-09 12:16:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:16:33,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485699337] [2024-11-09 12:16:33,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825697468] [2024-11-09 12:16:33,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825697468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:33,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:33,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 12:16:33,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650377777] [2024-11-09 12:16:33,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:33,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:16:33,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:33,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:16:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:16:33,167 INFO L87 Difference]: Start difference. First operand 220 states and 260 transitions. Second operand has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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) [2024-11-09 12:16:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:33,579 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2024-11-09 12:16:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 12:16:33,579 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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 30 [2024-11-09 12:16:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:33,581 INFO L225 Difference]: With dead ends: 244 [2024-11-09 12:16:33,581 INFO L226 Difference]: Without dead ends: 243 [2024-11-09 12:16:33,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-09 12:16:33,581 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 161 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:33,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1692 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:16:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-09 12:16:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 220. [2024-11-09 12:16:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5539568345323742) internal successors, (216), 191 states have internal predecessors, (216), 20 states have call successors, (20), 10 states have call predecessors, (20), 11 states have return successors, (23), 21 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-09 12:16:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 259 transitions. [2024-11-09 12:16:33,593 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 259 transitions. Word has length 30 [2024-11-09 12:16:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:33,594 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 259 transitions. [2024-11-09 12:16:33,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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) [2024-11-09 12:16:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 259 transitions. [2024-11-09 12:16:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:16:33,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:33,594 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] [2024-11-09 12:16:33,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 12:16:33,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:33,796 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)] === [2024-11-09 12:16:33,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash 175170762, now seen corresponding path program 1 times [2024-11-09 12:16:33,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:33,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103868709] [2024-11-09 12:16:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:33,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332441942] [2024-11-09 12:16:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:33,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:33,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:33,832 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) [2024-11-09 12:16:33,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:16:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:33,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:16:33,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:33,978 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 [2024-11-09 12:16:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:34,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:34,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103868709] [2024-11-09 12:16:34,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332441942] [2024-11-09 12:16:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332441942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:34,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460563757] [2024-11-09 12:16:34,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:34,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:34,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:34,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:34,004 INFO L87 Difference]: Start difference. First operand 220 states and 259 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:34,383 INFO L93 Difference]: Finished difference Result 237 states and 279 transitions. [2024-11-09 12:16:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-09 12:16:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:34,385 INFO L225 Difference]: With dead ends: 237 [2024-11-09 12:16:34,385 INFO L226 Difference]: Without dead ends: 235 [2024-11-09 12:16:34,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:34,385 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 86 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:34,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 241 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:16:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-09 12:16:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-11-09 12:16:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 200 states have internal predecessors, (228), 20 states have call successors, (20), 10 states have call predecessors, (20), 12 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 273 transitions. [2024-11-09 12:16:34,398 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 273 transitions. Word has length 30 [2024-11-09 12:16:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:34,398 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 273 transitions. [2024-11-09 12:16:34,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 273 transitions. [2024-11-09 12:16:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 12:16:34,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:34,399 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] [2024-11-09 12:16:34,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 12:16:34,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:34,601 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)] === [2024-11-09 12:16:34,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1357344161, now seen corresponding path program 1 times [2024-11-09 12:16:34,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:34,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782964477] [2024-11-09 12:16:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:34,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334715008] [2024-11-09 12:16:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:34,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:34,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:34,627 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) [2024-11-09 12:16:34,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 12:16:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:34,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-09 12:16:34,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:34,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:34,824 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 [2024-11-09 12:16:34,829 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 [2024-11-09 12:16:35,004 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 [2024-11-09 12:16:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:35,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782964477] [2024-11-09 12:16:35,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334715008] [2024-11-09 12:16:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334715008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 12:16:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509338095] [2024-11-09 12:16:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:35,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 12:16:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 12:16:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:35,027 INFO L87 Difference]: Start difference. First operand 231 states and 273 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:16:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:35,492 INFO L93 Difference]: Finished difference Result 254 states and 273 transitions. [2024-11-09 12:16:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:16:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-09 12:16:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:35,494 INFO L225 Difference]: With dead ends: 254 [2024-11-09 12:16:35,494 INFO L226 Difference]: Without dead ends: 253 [2024-11-09 12:16:35,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-09 12:16:35,495 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 283 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:35,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1162 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:16:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-09 12:16:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 231. [2024-11-09 12:16:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 149 states have (on average 1.523489932885906) internal successors, (227), 200 states have internal predecessors, (227), 20 states have call successors, (20), 10 states have call predecessors, (20), 12 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2024-11-09 12:16:35,507 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 31 [2024-11-09 12:16:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:35,507 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2024-11-09 12:16:35,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 12:16:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2024-11-09 12:16:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 12:16:35,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:35,508 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] [2024-11-09 12:16:35,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 12:16:35,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 12:16:35,709 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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)] === [2024-11-09 12:16:35,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash 835381580, now seen corresponding path program 1 times [2024-11-09 12:16:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927239299] [2024-11-09 12:16:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:35,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:35,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:16:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:35,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:16:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:35,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:16:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:35,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927239299] [2024-11-09 12:16:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927239299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:35,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:35,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512170166] [2024-11-09 12:16:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:35,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:35,994 INFO L87 Difference]: Start difference. First operand 231 states and 272 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:36,607 INFO L93 Difference]: Finished difference Result 244 states and 288 transitions. [2024-11-09 12:16:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:36,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-09 12:16:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:36,609 INFO L225 Difference]: With dead ends: 244 [2024-11-09 12:16:36,609 INFO L226 Difference]: Without dead ends: 243 [2024-11-09 12:16:36,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:36,610 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 79 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:36,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 414 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:16:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-09 12:16:36,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2024-11-09 12:16:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 205 states have internal predecessors, (234), 20 states have call successors, (20), 10 states have call predecessors, (20), 12 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 279 transitions. [2024-11-09 12:16:36,621 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 279 transitions. Word has length 32 [2024-11-09 12:16:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:36,622 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 279 transitions. [2024-11-09 12:16:36,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:16:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 279 transitions. [2024-11-09 12:16:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 12:16:36,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:36,623 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] [2024-11-09 12:16:36,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:16:36,623 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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)] === [2024-11-09 12:16:36,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash 127025328, now seen corresponding path program 1 times [2024-11-09 12:16:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:36,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576424580] [2024-11-09 12:16:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:36,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429585403] [2024-11-09 12:16:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:36,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:36,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:36,646 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) [2024-11-09 12:16:36,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 12:16:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:36,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 12:16:36,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:36,883 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 [2024-11-09 12:16:36,928 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 [2024-11-09 12:16:37,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:16:37,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576424580] [2024-11-09 12:16:37,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:37,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429585403] [2024-11-09 12:16:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429585403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:37,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578456085] [2024-11-09 12:16:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:37,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:37,036 INFO L87 Difference]: Start difference. First operand 236 states and 279 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) [2024-11-09 12:16:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:37,595 INFO L93 Difference]: Finished difference Result 314 states and 362 transitions. [2024-11-09 12:16:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:37,595 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 [2024-11-09 12:16:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:37,597 INFO L225 Difference]: With dead ends: 314 [2024-11-09 12:16:37,597 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 12:16:37,598 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 [2024-11-09 12:16:37,598 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 85 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:37,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 443 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 12:16:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 12:16:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 243. [2024-11-09 12:16:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.50625) internal successors, (241), 211 states have internal predecessors, (241), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2024-11-09 12:16:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2024-11-09 12:16:37,616 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 33 [2024-11-09 12:16:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:37,616 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2024-11-09 12:16:37,616 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) [2024-11-09 12:16:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2024-11-09 12:16:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:16:37,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:37,617 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] [2024-11-09 12:16:37,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:37,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 12:16:37,818 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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)] === [2024-11-09 12:16:37,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -248863442, now seen corresponding path program 1 times [2024-11-09 12:16:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663409605] [2024-11-09 12:16:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:37,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429339673] [2024-11-09 12:16:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:37,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:37,863 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) [2024-11-09 12:16:37,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 12:16:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:38,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-09 12:16:38,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:38,143 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 [2024-11-09 12:16:38,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 12:16:38,182 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 [2024-11-09 12:16:38,185 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 [2024-11-09 12:16:38,188 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 [2024-11-09 12:16:38,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:38,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 12:16:38,337 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 [2024-11-09 12:16:38,341 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 [2024-11-09 12:16:38,533 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 [2024-11-09 12:16:38,536 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 [2024-11-09 12:16:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:16:38,559 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:38,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:38,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663409605] [2024-11-09 12:16:38,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:38,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429339673] [2024-11-09 12:16:38,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429339673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:38,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:38,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-09 12:16:38,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50929151] [2024-11-09 12:16:38,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:38,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 12:16:38,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 12:16:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-09 12:16:38,561 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 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) [2024-11-09 12:16:42,578 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] [2024-11-09 12:16:46,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:50,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:55,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:59,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:17:03,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:17:07,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:17:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:07,728 INFO L93 Difference]: Finished difference Result 334 states and 362 transitions. [2024-11-09 12:17:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 12:17:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 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 38 [2024-11-09 12:17:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:07,731 INFO L225 Difference]: With dead ends: 334 [2024-11-09 12:17:07,731 INFO L226 Difference]: Without dead ends: 333 [2024-11-09 12:17:07,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-09 12:17:07,732 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 245 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 27 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:07,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1973 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 761 Invalid, 7 Unknown, 0 Unchecked, 28.8s Time] [2024-11-09 12:17:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-09 12:17:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 288. [2024-11-09 12:17:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.5228426395939085) internal successors, (300), 250 states have internal predecessors, (300), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-09 12:17:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 358 transitions. [2024-11-09 12:17:07,757 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 358 transitions. Word has length 38 [2024-11-09 12:17:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:07,758 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 358 transitions. [2024-11-09 12:17:07,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 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) [2024-11-09 12:17:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 358 transitions. [2024-11-09 12:17:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:17:07,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:07,759 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] [2024-11-09 12:17:07,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:07,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 12:17:07,963 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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)] === [2024-11-09 12:17:07,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash 875167941, now seen corresponding path program 1 times [2024-11-09 12:17:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075464240] [2024-11-09 12:17:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:07,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514269860] [2024-11-09 12:17:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:08,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:08,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:08,005 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) [2024-11-09 12:17:08,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 12:17:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:08,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 12:17:08,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:08,206 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 [2024-11-09 12:17:08,253 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 [2024-11-09 12:17:08,438 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 [2024-11-09 12:17:08,442 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 [2024-11-09 12:17:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:08,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:17:08,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075464240] [2024-11-09 12:17:08,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514269860] [2024-11-09 12:17:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514269860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:17:08,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:17:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-09 12:17:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852836274] [2024-11-09 12:17:08,635 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:17:08,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 12:17:08,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 12:17:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-09 12:17:08,636 INFO L87 Difference]: Start difference. First operand 288 states and 358 transitions. Second operand has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:17:12,648 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] [2024-11-09 12:17:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:13,472 INFO L93 Difference]: Finished difference Result 310 states and 358 transitions. [2024-11-09 12:17:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 12:17:13,473 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-09 12:17:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:13,475 INFO L225 Difference]: With dead ends: 310 [2024-11-09 12:17:13,476 INFO L226 Difference]: Without dead ends: 309 [2024-11-09 12:17:13,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-09 12:17:13,477 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 278 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:13,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1480 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 479 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 12:17:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-09 12:17:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 288. [2024-11-09 12:17:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.5126903553299493) internal successors, (298), 250 states have internal predecessors, (298), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-09 12:17:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 356 transitions. [2024-11-09 12:17:13,506 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 356 transitions. Word has length 39 [2024-11-09 12:17:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:13,506 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 356 transitions. [2024-11-09 12:17:13,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:17:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 356 transitions. [2024-11-09 12:17:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:17:13,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:13,507 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] [2024-11-09 12:17:13,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:13,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 12:17:13,712 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_47_to_56_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:13,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1360402448, now seen corresponding path program 1 times [2024-11-09 12:17:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138928835] [2024-11-09 12:17:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:13,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867555376] [2024-11-09 12:17:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:13,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:13,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:13,766 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) [2024-11-09 12:17:13,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 12:17:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:14,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-09 12:17:14,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:14,026 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 [2024-11-09 12:17:14,064 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 [2024-11-09 12:17:14,315 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 [2024-11-09 12:17:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:17:14,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:14,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138928835] [2024-11-09 12:17:14,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867555376] [2024-11-09 12:17:14,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867555376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:14,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:14,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 12:17:14,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769378930] [2024-11-09 12:17:14,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:14,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:17:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:14,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:17:14,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:17:14,338 INFO L87 Difference]: Start difference. First operand 288 states and 356 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) [2024-11-09 12:17:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:14,852 INFO L93 Difference]: Finished difference Result 313 states and 358 transitions. [2024-11-09 12:17:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 12:17:14,853 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 [2024-11-09 12:17:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:14,855 INFO L225 Difference]: With dead ends: 313 [2024-11-09 12:17:14,855 INFO L226 Difference]: Without dead ends: 312 [2024-11-09 12:17:14,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-09 12:17:14,856 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 162 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:14,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1576 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:17:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-09 12:17:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 288. [2024-11-09 12:17:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.50253807106599) internal successors, (296), 250 states have internal predecessors, (296), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-09 12:17:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 354 transitions. [2024-11-09 12:17:14,881 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 354 transitions. Word has length 40 [2024-11-09 12:17:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:14,881 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 354 transitions. [2024-11-09 12:17:14,882 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) [2024-11-09 12:17:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 354 transitions. [2024-11-09 12:17:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 12:17:14,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:14,882 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] [2024-11-09 12:17:14,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:15,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 12:17:15,083 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_47_to_56_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:15,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:15,084 INFO L85 PathProgramCache]: Analyzing trace with hash -777197017, now seen corresponding path program 1 times [2024-11-09 12:17:15,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:15,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776939795] [2024-11-09 12:17:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:15,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635885215] [2024-11-09 12:17:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:15,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:15,136 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) [2024-11-09 12:17:15,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 12:17:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:15,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-09 12:17:15,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:15,428 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 [2024-11-09 12:17:15,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:17:15,529 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 [2024-11-09 12:17:15,633 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 [2024-11-09 12:17:16,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 12:17:16,072 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 [2024-11-09 12:17:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:17:16,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776939795] [2024-11-09 12:17:16,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635885215] [2024-11-09 12:17:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635885215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:16,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-09 12:17:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830776874] [2024-11-09 12:17:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:16,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 12:17:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 12:17:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-09 12:17:16,101 INFO L87 Difference]: Start difference. First operand 288 states and 354 transitions. Second operand has 19 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2024-11-09 12:17:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:17,312 INFO L93 Difference]: Finished difference Result 312 states and 356 transitions. [2024-11-09 12:17:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 12:17:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 [2024-11-09 12:17:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:17,315 INFO L225 Difference]: With dead ends: 312 [2024-11-09 12:17:17,315 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 12:17:17,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-09 12:17:17,316 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 352 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:17,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1668 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 12:17:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 12:17:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 288. [2024-11-09 12:17:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.4923857868020305) internal successors, (294), 250 states have internal predecessors, (294), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-09 12:17:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 352 transitions. [2024-11-09 12:17:17,396 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 352 transitions. Word has length 41 [2024-11-09 12:17:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:17,396 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 352 transitions. [2024-11-09 12:17:17,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2024-11-09 12:17:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 352 transitions. [2024-11-09 12:17:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 12:17:17,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:17,397 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] [2024-11-09 12:17:17,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:17,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 12:17:17,598 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_47_to_56_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:17,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1676696306, now seen corresponding path program 1 times [2024-11-09 12:17:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:17,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587390912] [2024-11-09 12:17:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:17,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986614195] [2024-11-09 12:17:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:17,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:17,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:17,642 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) [2024-11-09 12:17:17,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 12:17:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:17,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-09 12:17:17,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:17,877 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 [2024-11-09 12:17:17,935 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 [2024-11-09 12:17:17,943 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 [2024-11-09 12:17:18,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:17:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:17:18,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587390912] [2024-11-09 12:17:18,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986614195] [2024-11-09 12:17:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986614195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:18,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 12:17:18,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149864475] [2024-11-09 12:17:18,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:18,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 12:17:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 12:17:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-09 12:17:18,324 INFO L87 Difference]: Start difference. First operand 288 states and 352 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:17:18,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:18,932 INFO L93 Difference]: Finished difference Result 307 states and 352 transitions. [2024-11-09 12:17:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 12:17:18,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-09 12:17:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:18,934 INFO L225 Difference]: With dead ends: 307 [2024-11-09 12:17:18,934 INFO L226 Difference]: Without dead ends: 305 [2024-11-09 12:17:18,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-09 12:17:18,935 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 347 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:18,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 856 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:17:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-09 12:17:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 288. [2024-11-09 12:17:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.4771573604060915) internal successors, (291), 250 states have internal predecessors, (291), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-09 12:17:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 349 transitions. [2024-11-09 12:17:18,987 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 349 transitions. Word has length 42 [2024-11-09 12:17:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:18,987 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 349 transitions. [2024-11-09 12:17:18,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:17:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 349 transitions. [2024-11-09 12:17:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 12:17:18,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:18,992 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:19,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:19,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:19,193 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_47_to_56_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:19,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 437977993, now seen corresponding path program 1 times [2024-11-09 12:17:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955627472] [2024-11-09 12:17:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937026925] [2024-11-09 12:17:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:19,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:19,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:19,271 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) [2024-11-09 12:17:19,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 12:17:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:19,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-09 12:17:19,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:19,566 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 [2024-11-09 12:17:19,617 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 [2024-11-09 12:17:19,623 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 [2024-11-09 12:17:19,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 12:17:19,635 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 [2024-11-09 12:17:19,639 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 [2024-11-09 12:17:19,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 12:17:19,732 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 [2024-11-09 12:17:19,813 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 [2024-11-09 12:17:20,079 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 [2024-11-09 12:17:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 12:17:20,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:17:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955627472] [2024-11-09 12:17:20,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937026925] [2024-11-09 12:17:20,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937026925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:17:20,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:17:20,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 12:17:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623725035] [2024-11-09 12:17:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:17:20,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 12:17:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 12:17:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:17:20,114 INFO L87 Difference]: Start difference. First operand 288 states and 349 transitions. Second operand has 15 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:17:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:20,867 INFO L93 Difference]: Finished difference Result 305 states and 349 transitions. [2024-11-09 12:17:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 12:17:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-09 12:17:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:20,870 INFO L225 Difference]: With dead ends: 305 [2024-11-09 12:17:20,870 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 12:17:20,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-09 12:17:20,871 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 316 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:20,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 820 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 12:17:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 12:17:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 288. [2024-11-09 12:17:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 197 states have (on average 1.467005076142132) internal successors, (289), 250 states have internal predecessors, (289), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-09 12:17:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 347 transitions. [2024-11-09 12:17:20,898 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 347 transitions. Word has length 43 [2024-11-09 12:17:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:20,899 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 347 transitions. [2024-11-09 12:17:20,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 12:17:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 347 transitions. [2024-11-09 12:17:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 12:17:20,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:20,900 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:20,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 12:17:21,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:21,104 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:21,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1247420923, now seen corresponding path program 1 times [2024-11-09 12:17:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136927758] [2024-11-09 12:17:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:21,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 12:17:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:21,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:17:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:21,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:17:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:22,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 12:17:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:22,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 12:17:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 12:17:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136927758] [2024-11-09 12:17:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136927758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:17:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102912587] [2024-11-09 12:17:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:22,146 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) [2024-11-09 12:17:22,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 12:17:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:22,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 12:17:22,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:22,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 12:17:22,507 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 [2024-11-09 12:17:22,570 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 [2024-11-09 12:17:22,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 12:17:22,617 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 [2024-11-09 12:17:22,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:17:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:22,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:17:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:17:23,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102912587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:17:23,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:17:23,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 40 [2024-11-09 12:17:23,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615700432] [2024-11-09 12:17:23,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:17:23,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 12:17:23,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 12:17:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 12:17:23,672 INFO L87 Difference]: Start difference. First operand 288 states and 347 transitions. Second operand has 40 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 13 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 12:17:27,685 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] [2024-11-09 12:17:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:30,234 INFO L93 Difference]: Finished difference Result 334 states and 398 transitions. [2024-11-09 12:17:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 12:17:30,235 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 13 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) Word has length 43 [2024-11-09 12:17:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:30,237 INFO L225 Difference]: With dead ends: 334 [2024-11-09 12:17:30,237 INFO L226 Difference]: Without dead ends: 305 [2024-11-09 12:17:30,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=364, Invalid=2828, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 12:17:30,239 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 460 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:30,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 939 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1959 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2024-11-09 12:17:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-09 12:17:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 293. [2024-11-09 12:17:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 200 states have (on average 1.47) internal successors, (294), 254 states have internal predecessors, (294), 28 states have call successors, (28), 12 states have call predecessors, (28), 15 states have return successors, (35), 30 states have call predecessors, (35), 28 states have call successors, (35) [2024-11-09 12:17:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 357 transitions. [2024-11-09 12:17:30,273 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 357 transitions. Word has length 43 [2024-11-09 12:17:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:30,273 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 357 transitions. [2024-11-09 12:17:30,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 13 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 12:17:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 357 transitions. [2024-11-09 12:17:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 12:17:30,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:30,274 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:30,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 12:17:30,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:30,475 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:30,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1925717064, now seen corresponding path program 1 times [2024-11-09 12:17:30,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515841234] [2024-11-09 12:17:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:30,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687919589] [2024-11-09 12:17:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:30,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:30,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:30,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:17:30,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 12:17:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:30,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-09 12:17:30,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:30,843 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 1 [2024-11-09 12:17:30,871 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 [2024-11-09 12:17:30,997 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 [2024-11-09 12:17:31,159 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 [2024-11-09 12:17:31,164 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 [2024-11-09 12:17:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:17:31,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:17:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:17:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515841234] [2024-11-09 12:17:32,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:17:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687919589] [2024-11-09 12:17:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687919589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:17:32,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:17:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 12:17:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847038245] [2024-11-09 12:17:32,384 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:17:32,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 12:17:32,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:17:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 12:17:32,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2024-11-09 12:17:32,385 INFO L87 Difference]: Start difference. First operand 293 states and 357 transitions. Second operand has 17 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:17:33,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:17:33,463 INFO L93 Difference]: Finished difference Result 419 states and 481 transitions. [2024-11-09 12:17:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 12:17:33,464 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-09 12:17:33,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:17:33,467 INFO L225 Difference]: With dead ends: 419 [2024-11-09 12:17:33,467 INFO L226 Difference]: Without dead ends: 416 [2024-11-09 12:17:33,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-09 12:17:33,468 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 291 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 12:17:33,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2499 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 12:17:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-09 12:17:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 356. [2024-11-09 12:17:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 248 states have (on average 1.5040322580645162) internal successors, (373), 307 states have internal predecessors, (373), 38 states have call successors, (38), 15 states have call predecessors, (38), 20 states have return successors, (51), 38 states have call predecessors, (51), 38 states have call successors, (51) [2024-11-09 12:17:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 462 transitions. [2024-11-09 12:17:33,518 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 462 transitions. Word has length 45 [2024-11-09 12:17:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:17:33,518 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 462 transitions. [2024-11-09 12:17:33,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:17:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 462 transitions. [2024-11-09 12:17:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 12:17:33,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:17:33,519 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:17:33,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 12:17:33,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:33,721 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-09 12:17:33,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:17:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash -432313123, now seen corresponding path program 1 times [2024-11-09 12:17:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:17:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650554065] [2024-11-09 12:17:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:17:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:17:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406403042] [2024-11-09 12:17:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:17:33,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:17:33,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:17:33,768 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:17:33,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 12:17:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:17:34,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-11-09 12:17:34,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:17:34,081 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 [2024-11-09 12:17:34,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:17:34,213 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 [2024-11-09 12:17:34,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 12:17:34,227 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 [2024-11-09 12:17:34,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:17:34,425 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 [2024-11-09 12:17:34,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:17:34,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-09 12:17:34,925 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-09 12:17:34,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 51 [2024-11-09 12:17:35,293 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-09 12:17:35,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-11-09 12:17:35,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 12:17:35,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 102 [2024-11-09 12:17:36,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 12:17:36,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 143 [2024-11-09 12:17:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:17:36,469 INFO L311 TraceCheckSpWp]: Computing backward predicates...