./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.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 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:11:31,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:11:31,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:11:31,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:11:31,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:11:31,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:11:31,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:11:31,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:11:31,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:11:31,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:11:31,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:11:31,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:11:31,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:11:31,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:11:31,728 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:11:31,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:11:31,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:11:31,729 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:11:31,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:11:31,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:11:31,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:11:31,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:11:31,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:11:31,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:11:31,732 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:11:31,733 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:11:31,733 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:11:31,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:11:31,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:11:31,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:11:31,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:11:31,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:11:31,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:11:31,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:11:31,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:31,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:11:31,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:11:31,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:11:31,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:11:31,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:11:31,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:11:31,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:11:31,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:11:31,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:11:31,738 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b [2024-11-19 11:11:31,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:11:32,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:11:32,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:11:32,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:11:32,007 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:11:32,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2024-11-19 11:11:33,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:11:33,627 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:11:33,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2024-11-19 11:11:33,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cd6ccc1/fc0b3e571e8f441abb351148bc4905e6/FLAG35ab30203 [2024-11-19 11:11:33,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cd6ccc1/fc0b3e571e8f441abb351148bc4905e6 [2024-11-19 11:11:33,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:11:33,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:11:33,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:33,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:11:33,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:11:33,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:33,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba3ea8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33, skipping insertion in model container [2024-11-19 11:11:33,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:33,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:11:33,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:33,918 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:11:33,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:33,971 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:11:33,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33 WrapperNode [2024-11-19 11:11:33,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:33,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:33,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:11:33,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:11:33,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:33,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,030 INFO L138 Inliner]: procedures = 17, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 137 [2024-11-19 11:11:34,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:34,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:11:34,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:11:34,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:11:34,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,057 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,090 INFO L175 MemorySlicer]: Split 88 memory accesses to 12 slices as follows [2, 8, 7, 8, 9, 12, 7, 5, 10, 5, 8, 7]. 14 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0]. The 20 writes are split as follows [0, 2, 3, 0, 1, 1, 3, 2, 2, 2, 2, 2]. [2024-11-19 11:11:34,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:11:34,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:11:34,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:11:34,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:11:34,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (1/1) ... [2024-11-19 11:11:34,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:34,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:34,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 11:11:34,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 11:11:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:11:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 11:11:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 11:11:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:11:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:11:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:11:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:11:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:11:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 11:11:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 11:11:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 11:11:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 11:11:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 11:11:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 11:11:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 11:11:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_34_to_60_0 [2024-11-19 11:11:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_34_to_60_0 [2024-11-19 11:11:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:11:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_48_0 [2024-11-19 11:11:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_48_0 [2024-11-19 11:11:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:11:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:11:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:11:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:11:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:11:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 11:11:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 11:11:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 11:11:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 11:11:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 11:11:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-19 11:11:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-19 11:11:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:11:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 11:11:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 11:11:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-19 11:11:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-19 11:11:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:11:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:11:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:11:34,375 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:11:34,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:11:35,179 INFO L? ?]: Removed 241 outVars from TransFormulas that were not future-live. [2024-11-19 11:11:35,180 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:11:35,202 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:11:35,203 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 11:11:35,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:35 BoogieIcfgContainer [2024-11-19 11:11:35,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:11:35,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:11:35,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:11:35,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:11:35,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:11:33" (1/3) ... [2024-11-19 11:11:35,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acac4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:35, skipping insertion in model container [2024-11-19 11:11:35,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:33" (2/3) ... [2024-11-19 11:11:35,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acac4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:35, skipping insertion in model container [2024-11-19 11:11:35,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:35" (3/3) ... [2024-11-19 11:11:35,214 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2.c [2024-11-19 11:11:35,229 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:11:35,229 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2024-11-19 11:11:35,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:11:35,292 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;@43363769, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:11:35,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-11-19 11:11:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 94 states have (on average 1.7446808510638299) internal successors, (164), 160 states have internal predecessors, (164), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 11:11:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 11:11:35,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:35,302 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:35,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-19 11:11:35,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1683606298, now seen corresponding path program 1 times [2024-11-19 11:11:35,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:35,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687736543] [2024-11-19 11:11:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:35,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:35,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:35,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687736543] [2024-11-19 11:11:35,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687736543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:35,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355629878] [2024-11-19 11:11:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:35,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:35,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:35,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:35,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:11:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:35,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 11:11:35,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:35,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355629878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:35,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:35,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 11:11:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684273008] [2024-11-19 11:11:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:35,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 11:11:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:35,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 11:11:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:11:35,842 INFO L87 Difference]: Start difference. First operand has 175 states, 94 states have (on average 1.7446808510638299) internal successors, (164), 160 states have internal predecessors, (164), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:35,889 INFO L93 Difference]: Finished difference Result 346 states and 383 transitions. [2024-11-19 11:11:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 11:11:35,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-19 11:11:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:35,928 INFO L225 Difference]: With dead ends: 346 [2024-11-19 11:11:35,930 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 11:11:35,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:11:35,946 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:35,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 11:11:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-19 11:11:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 154 states have internal predecessors, (154), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 11:11:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 176 transitions. [2024-11-19 11:11:36,020 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 176 transitions. Word has length 21 [2024-11-19 11:11:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:36,020 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 176 transitions. [2024-11-19 11:11:36,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 176 transitions. [2024-11-19 11:11:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 11:11:36,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:36,022 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:36,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:11:36,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 11:11:36,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-19 11:11:36,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1169407779, now seen corresponding path program 1 times [2024-11-19 11:11:36,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:36,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724612252] [2024-11-19 11:11:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:36,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573054946] [2024-11-19 11:11:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:36,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:36,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:36,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:36,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:11:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:36,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 11:11:36,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:36,696 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 [2024-11-19 11:11:36,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:36,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:36,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:36,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:11:36,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:36,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724612252] [2024-11-19 11:11:36,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:36,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573054946] [2024-11-19 11:11:36,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573054946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:36,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:36,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 11:11:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012167457] [2024-11-19 11:11:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:36,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 11:11:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 11:11:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:11:36,886 INFO L87 Difference]: Start difference. First operand 168 states and 176 transitions. Second operand has 13 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:37,398 INFO L93 Difference]: Finished difference Result 304 states and 319 transitions. [2024-11-19 11:11:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:11:37,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-19 11:11:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:37,401 INFO L225 Difference]: With dead ends: 304 [2024-11-19 11:11:37,404 INFO L226 Difference]: Without dead ends: 303 [2024-11-19 11:11:37,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-19 11:11:37,405 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 260 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:37,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1550 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:11:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-19 11:11:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 227. [2024-11-19 11:11:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 141 states have (on average 1.75177304964539) internal successors, (247), 207 states have internal predecessors, (247), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-19 11:11:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 281 transitions. [2024-11-19 11:11:37,464 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 281 transitions. Word has length 22 [2024-11-19 11:11:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:37,465 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 281 transitions. [2024-11-19 11:11:37,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 281 transitions. [2024-11-19 11:11:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 11:11:37,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:37,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:37,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:11:37,683 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,SelfDestructingSolverStorable1 [2024-11-19 11:11:37,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-19 11:11:37,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1166822780, now seen corresponding path program 1 times [2024-11-19 11:11:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880663854] [2024-11-19 11:11:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:11:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880663854] [2024-11-19 11:11:38,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880663854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 11:11:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608660010] [2024-11-19 11:11:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:38,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:11:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:11:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:11:38,132 INFO L87 Difference]: Start difference. First operand 227 states and 281 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:11:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:39,579 INFO L93 Difference]: Finished difference Result 260 states and 313 transitions. [2024-11-19 11:11:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:11:39,580 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-11-19 11:11:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:39,583 INFO L225 Difference]: With dead ends: 260 [2024-11-19 11:11:39,583 INFO L226 Difference]: Without dead ends: 227 [2024-11-19 11:11:39,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:11:39,585 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 134 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:39,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 403 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 11:11:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-19 11:11:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-19 11:11:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 141 states have (on average 1.7446808510638299) internal successors, (246), 206 states have internal predecessors, (246), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-19 11:11:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 280 transitions. [2024-11-19 11:11:39,617 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 280 transitions. Word has length 22 [2024-11-19 11:11:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:39,618 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 280 transitions. [2024-11-19 11:11:39,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:11:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 280 transitions. [2024-11-19 11:11:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 11:11:39,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:39,619 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] [2024-11-19 11:11:39,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:11:39,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-19 11:11:39,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1891902818, now seen corresponding path program 1 times [2024-11-19 11:11:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628035832] [2024-11-19 11:11:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154875053] [2024-11-19 11:11:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:39,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:39,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:39,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:39,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:11:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:39,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-19 11:11:39,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:39,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:39,879 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 [2024-11-19 11:11:39,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:39,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:11:40,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:11:40,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:40,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628035832] [2024-11-19 11:11:40,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154875053] [2024-11-19 11:11:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154875053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 11:11:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035586168] [2024-11-19 11:11:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:40,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 11:11:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 11:11:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:11:40,040 INFO L87 Difference]: Start difference. First operand 227 states and 280 transitions. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:40,430 INFO L93 Difference]: Finished difference Result 275 states and 289 transitions. [2024-11-19 11:11:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 11:11:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-19 11:11:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:40,433 INFO L225 Difference]: With dead ends: 275 [2024-11-19 11:11:40,433 INFO L226 Difference]: Without dead ends: 274 [2024-11-19 11:11:40,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:11:40,436 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 210 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:40,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1559 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:11:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-19 11:11:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 227. [2024-11-19 11:11:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 141 states have (on average 1.7375886524822695) internal successors, (245), 206 states have internal predecessors, (245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-19 11:11:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 279 transitions. [2024-11-19 11:11:40,464 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 279 transitions. Word has length 23 [2024-11-19 11:11:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:40,464 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 279 transitions. [2024-11-19 11:11:40,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 279 transitions. [2024-11-19 11:11:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:11:40,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:40,469 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] [2024-11-19 11:11:40,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:11:40,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:40,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_40_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-19 11:11:40,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1480554747, now seen corresponding path program 1 times [2024-11-19 11:11:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:40,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72588655] [2024-11-19 11:11:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat