./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx --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 45898d4df949634911027a72c0e1c79e1edaab63547cca5c16238cef1218e556 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:06,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:06,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 20:58:06,264 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:06,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:06,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:06,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:06,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:06,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:58:06,322 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:58:06,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:58:06,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:58:06,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:06,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:06,325 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:06,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:06,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:58:06,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:06,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:06,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:06,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:06,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:58:06,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:58:06,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:58:06,335 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 20:58:06,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:58:06,336 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:06,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:58:06,337 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:06,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:06,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:06,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:58:06,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:58:06,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:06,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:06,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:58:06,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:58:06,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:58:06,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:58:06,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:58:06,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:58:06,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:58:06,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:58:06,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:58:06,345 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45898d4df949634911027a72c0e1c79e1edaab63547cca5c16238cef1218e556 [2023-11-21 20:58:06,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:06,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:06,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:06,774 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:06,775 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:06,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_4.c [2023-11-21 20:58:10,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:10,669 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:10,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/sv-benchmarks/c/recursified_loop-simple/recursified_nested_4.c [2023-11-21 20:58:10,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/data/85300a994/250a35b2d5764b7fb49d5c028ad273ed/FLAGb157a3855 [2023-11-21 20:58:10,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/data/85300a994/250a35b2d5764b7fb49d5c028ad273ed [2023-11-21 20:58:10,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:10,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:10,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:10,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:10,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:10,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:10" (1/1) ... [2023-11-21 20:58:10,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5f57af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:10, skipping insertion in model container [2023-11-21 20:58:10,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:10" (1/1) ... [2023-11-21 20:58:10,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:11,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:11,033 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:58:11,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:11,076 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:58:11,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11 WrapperNode [2023-11-21 20:58:11,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:11,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:11,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:58:11,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:58:11,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,116 INFO L138 Inliner]: procedures = 15, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-11-21 20:58:11,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:11,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:58:11,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:58:11,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:58:11,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,134 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,152 INFO L187 HeapSplitter]: Split 26 memory accesses to 5 slices as follows [2, 6, 6, 6, 6] [2023-11-21 20:58:11,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:58:11,172 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:58:11,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:58:11,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:58:11,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (1/1) ... [2023-11-21 20:58:11,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:11,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:58:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:58:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:58:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:58:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 20:58:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 20:58:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 20:58:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 20:58:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:58:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 20:58:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 20:58:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 20:58:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 20:58:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 20:58:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_24_to_25_0 [2023-11-21 20:58:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_24_to_25_0 [2023-11-21 20:58:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_24_0 [2023-11-21 20:58:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_24_0 [2023-11-21 20:58:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_22_to_23_0 [2023-11-21 20:58:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_22_to_23_0 [2023-11-21 20:58:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_25_0 [2023-11-21 20:58:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_25_0 [2023-11-21 20:58:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:58:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:58:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 20:58:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 20:58:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 20:58:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 20:58:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 20:58:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:58:11,433 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:58:11,436 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:58:11,746 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:58:11,868 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:58:11,868 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 20:58:11,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:11 BoogieIcfgContainer [2023-11-21 20:58:11,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:58:11,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:58:11,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:58:11,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:58:11,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:58:10" (1/3) ... [2023-11-21 20:58:11,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de5f287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:11, skipping insertion in model container [2023-11-21 20:58:11,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:11" (2/3) ... [2023-11-21 20:58:11,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de5f287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:11, skipping insertion in model container [2023-11-21 20:58:11,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:11" (3/3) ... [2023-11-21 20:58:11,883 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_4.c [2023-11-21 20:58:11,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:58:11,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 20:58:11,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:58:11,984 INFO L357 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, mHoare=true, 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;@6e0f5d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:58:11,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 20:58:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 25 states have (on average 1.48) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 20:58:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 20:58:11,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:11,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:12,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:12,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1456900990, now seen corresponding path program 1 times [2023-11-21 20:58:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:12,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303155224] [2023-11-21 20:58:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:12,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303155224] [2023-11-21 20:58:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303155224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:12,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:58:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421994374] [2023-11-21 20:58:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:58:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:12,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:58:12,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:58:12,927 INFO L87 Difference]: Start difference. First operand has 46 states, 25 states have (on average 1.48) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:58:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:13,166 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2023-11-21 20:58:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:58:13,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-21 20:58:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:13,179 INFO L225 Difference]: With dead ends: 98 [2023-11-21 20:58:13,179 INFO L226 Difference]: Without dead ends: 48 [2023-11-21 20:58:13,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:58:13,187 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 16 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:13,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 148 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-21 20:58:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-11-21 20:58:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-21 20:58:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-21 20:58:13,234 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 11 [2023-11-21 20:58:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:13,235 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-21 20:58:13,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:58:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-21 20:58:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 20:58:13,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:13,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:13,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:58:13,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:13,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1916990516, now seen corresponding path program 1 times [2023-11-21 20:58:13,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868617932] [2023-11-21 20:58:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:13,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868617932] [2023-11-21 20:58:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868617932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:13,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:58:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443070011] [2023-11-21 20:58:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:58:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:58:13,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:58:13,596 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:13,740 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2023-11-21 20:58:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:58:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 20:58:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:13,745 INFO L225 Difference]: With dead ends: 91 [2023-11-21 20:58:13,745 INFO L226 Difference]: Without dead ends: 49 [2023-11-21 20:58:13,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:58:13,754 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:13,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 201 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-21 20:58:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2023-11-21 20:58:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 37 states have internal predecessors, (38), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-21 20:58:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2023-11-21 20:58:13,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 14 [2023-11-21 20:58:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:13,775 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2023-11-21 20:58:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2023-11-21 20:58:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 20:58:13,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:13,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:13,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:58:13,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:13,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash 702836230, now seen corresponding path program 1 times [2023-11-21 20:58:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:13,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861074016] [2023-11-21 20:58:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:13,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:13,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861074016] [2023-11-21 20:58:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861074016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:13,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:58:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177996736] [2023-11-21 20:58:13,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:13,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:13,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:13,896 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:13,934 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-21 20:58:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:58:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 20:58:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:13,937 INFO L225 Difference]: With dead ends: 47 [2023-11-21 20:58:13,938 INFO L226 Difference]: Without dead ends: 46 [2023-11-21 20:58:13,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:13,947 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:13,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 20:58:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-21 20:58:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-21 20:58:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 36 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-21 20:58:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2023-11-21 20:58:13,970 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 15 [2023-11-21 20:58:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:13,971 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2023-11-21 20:58:13,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-11-21 20:58:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 20:58:13,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:13,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:13,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 20:58:13,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:13,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1911039939, now seen corresponding path program 1 times [2023-11-21 20:58:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:13,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32205230] [2023-11-21 20:58:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 20:58:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32205230] [2023-11-21 20:58:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32205230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:58:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532035581] [2023-11-21 20:58:14,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:58:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:14,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:58:14,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:58:14,237 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:58:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:14,418 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2023-11-21 20:58:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:58:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-21 20:58:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:14,420 INFO L225 Difference]: With dead ends: 94 [2023-11-21 20:58:14,420 INFO L226 Difference]: Without dead ends: 50 [2023-11-21 20:58:14,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:58:14,422 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:14,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 133 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-21 20:58:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-21 20:58:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 38 states have internal predecessors, (39), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-21 20:58:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2023-11-21 20:58:14,433 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 14 [2023-11-21 20:58:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:14,434 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2023-11-21 20:58:14,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:58:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2023-11-21 20:58:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 20:58:14,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:14,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:14,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 20:58:14,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:14,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1500420822, now seen corresponding path program 1 times [2023-11-21 20:58:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:14,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830116900] [2023-11-21 20:58:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830116900] [2023-11-21 20:58:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830116900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:14,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:14,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:58:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199486575] [2023-11-21 20:58:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:14,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:58:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:58:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:58:14,820 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:14,961 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2023-11-21 20:58:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:58:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-21 20:58:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:14,966 INFO L225 Difference]: With dead ends: 54 [2023-11-21 20:58:14,966 INFO L226 Difference]: Without dead ends: 53 [2023-11-21 20:58:14,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 20:58:14,969 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:14,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 193 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:14,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-21 20:58:14,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2023-11-21 20:58:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 36 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-21 20:58:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2023-11-21 20:58:14,995 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 19 [2023-11-21 20:58:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:14,996 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2023-11-21 20:58:14,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2023-11-21 20:58:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 20:58:14,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:14,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 20:58:15,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:15,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -214899351, now seen corresponding path program 1 times [2023-11-21 20:58:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916004149] [2023-11-21 20:58:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:58:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 20:58:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916004149] [2023-11-21 20:58:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916004149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667048266] [2023-11-21 20:58:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:15,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:15,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:15,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 20:58:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:15,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-21 20:58:16,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:16,069 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 [2023-11-21 20:58:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 20:58:16,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:58:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:17,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667048266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:58:17,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:58:17,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 26 [2023-11-21 20:58:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575165870] [2023-11-21 20:58:17,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:58:17,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 20:58:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 20:58:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2023-11-21 20:58:17,049 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 26 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 20:58:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:17,599 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2023-11-21 20:58:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 20:58:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 24 [2023-11-21 20:58:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:17,603 INFO L225 Difference]: With dead ends: 98 [2023-11-21 20:58:17,603 INFO L226 Difference]: Without dead ends: 52 [2023-11-21 20:58:17,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2023-11-21 20:58:17,611 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:17,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 285 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:58:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-21 20:58:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-21 20:58:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.3) internal successors, (39), 38 states have internal predecessors, (39), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-21 20:58:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-11-21 20:58:17,623 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 24 [2023-11-21 20:58:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:17,624 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-11-21 20:58:17,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 20:58:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-11-21 20:58:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 20:58:17,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:17,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:17,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:17,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 20:58:17,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:17,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1899158159, now seen corresponding path program 2 times [2023-11-21 20:58:17,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:17,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624061607] [2023-11-21 20:58:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:17,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:58:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-21 20:58:18,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624061607] [2023-11-21 20:58:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624061607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:18,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:18,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:58:18,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274216866] [2023-11-21 20:58:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:18,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:58:18,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:58:18,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:58:18,369 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:58:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:18,595 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2023-11-21 20:58:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 20:58:18,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-21 20:58:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:18,597 INFO L225 Difference]: With dead ends: 62 [2023-11-21 20:58:18,597 INFO L226 Difference]: Without dead ends: 58 [2023-11-21 20:58:18,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:58:18,598 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:18,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 151 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-21 20:58:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-21 20:58:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 42 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-21 20:58:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-11-21 20:58:18,610 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 38 [2023-11-21 20:58:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:18,612 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-11-21 20:58:18,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:58:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-11-21 20:58:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 20:58:18,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:18,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:18,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 20:58:18,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:18,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash -131242433, now seen corresponding path program 1 times [2023-11-21 20:58:18,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:18,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764905972] [2023-11-21 20:58:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:18,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 20:58:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 20:58:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 20:58:20,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764905972] [2023-11-21 20:58:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764905972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993274699] [2023-11-21 20:58:20,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:20,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:20,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:20,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:20,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 20:58:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:20,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-21 20:58:20,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:20,535 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 [2023-11-21 20:58:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-21 20:58:20,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:58:21,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993274699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:21,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 20:58:21,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2023-11-21 20:58:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122900214] [2023-11-21 20:58:21,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 20:58:21,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 20:58:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 20:58:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2023-11-21 20:58:21,826 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 24 states, 18 states have (on average 2.5) internal successors, (45), 23 states have internal predecessors, (45), 10 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-21 20:58:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:22,729 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2023-11-21 20:58:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-21 20:58:22,730 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.5) internal successors, (45), 23 states have internal predecessors, (45), 10 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) Word has length 48 [2023-11-21 20:58:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:22,732 INFO L225 Difference]: With dead ends: 118 [2023-11-21 20:58:22,732 INFO L226 Difference]: Without dead ends: 62 [2023-11-21 20:58:22,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=271, Invalid=1709, Unknown=0, NotChecked=0, Total=1980 [2023-11-21 20:58:22,735 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:22,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 256 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:58:22,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-21 20:58:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-21 20:58:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 44 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 10 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-21 20:58:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2023-11-21 20:58:22,747 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 48 [2023-11-21 20:58:22,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:22,748 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2023-11-21 20:58:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.5) internal successors, (45), 23 states have internal predecessors, (45), 10 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-21 20:58:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2023-11-21 20:58:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-21 20:58:22,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:22,751 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:22,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:22,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:22,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:22,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1681093825, now seen corresponding path program 1 times [2023-11-21 20:58:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373003892] [2023-11-21 20:58:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:58:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 20:58:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-21 20:58:24,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:24,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373003892] [2023-11-21 20:58:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373003892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290390149] [2023-11-21 20:58:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:24,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:24,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:24,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 20:58:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:24,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 20:58:24,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:24,586 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 [2023-11-21 20:58:24,742 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 36 treesize of output 13 [2023-11-21 20:58:24,826 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 [2023-11-21 20:58:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-21 20:58:24,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:58:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290390149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:25,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 20:58:25,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2023-11-21 20:58:25,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773288838] [2023-11-21 20:58:25,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 20:58:25,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 20:58:25,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 20:58:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-21 20:58:25,088 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 15 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 20:58:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:25,568 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2023-11-21 20:58:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 20:58:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 84 [2023-11-21 20:58:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:25,571 INFO L225 Difference]: With dead ends: 67 [2023-11-21 20:58:25,572 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 20:58:25,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-11-21 20:58:25,573 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:25,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 206 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 20:58:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 20:58:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2023-11-21 20:58:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 44 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-21 20:58:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2023-11-21 20:58:25,585 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 84 [2023-11-21 20:58:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:25,586 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2023-11-21 20:58:25,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 20:58:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2023-11-21 20:58:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 20:58:25,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:25,588 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:25,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:25,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 574301062, now seen corresponding path program 1 times [2023-11-21 20:58:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009349213] [2023-11-21 20:58:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:58:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 20:58:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-21 20:58:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009349213] [2023-11-21 20:58:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009349213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317006457] [2023-11-21 20:58:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:27,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:27,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:27,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:27,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 20:58:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:27,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 20:58:27,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:27,429 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 [2023-11-21 20:58:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-21 20:58:27,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317006457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:27,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:58:27,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-21 20:58:27,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750038530] [2023-11-21 20:58:27,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:27,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:58:27,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:58:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-21 20:58:27,452 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-21 20:58:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:27,579 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2023-11-21 20:58:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:58:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 85 [2023-11-21 20:58:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:27,582 INFO L225 Difference]: With dead ends: 62 [2023-11-21 20:58:27,583 INFO L226 Difference]: Without dead ends: 61 [2023-11-21 20:58:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-21 20:58:27,585 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 139 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-21 20:58:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-21 20:58:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 43 states have internal predecessors, (44), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-21 20:58:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-11-21 20:58:27,606 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 85 [2023-11-21 20:58:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:27,606 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-11-21 20:58:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-21 20:58:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-11-21 20:58:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-21 20:58:27,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:27,613 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:27,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 20:58:27,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:27,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2094003077, now seen corresponding path program 2 times [2023-11-21 20:58:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:27,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406969000] [2023-11-21 20:58:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:27,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:29,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 20:58:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 152 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-21 20:58:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406969000] [2023-11-21 20:58:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406969000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:31,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655962401] [2023-11-21 20:58:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:58:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:31,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:31,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 20:58:31,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 20:58:31,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:58:31,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-21 20:58:31,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:31,926 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 [2023-11-21 20:58:32,197 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 [2023-11-21 20:58:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-21 20:58:32,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:32,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655962401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:32,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:58:32,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 18 [2023-11-21 20:58:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102736025] [2023-11-21 20:58:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:32,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:58:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:58:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-21 20:58:32,226 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 20:58:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:32,410 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-11-21 20:58:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 20:58:32,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2023-11-21 20:58:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:32,412 INFO L225 Difference]: With dead ends: 71 [2023-11-21 20:58:32,412 INFO L226 Difference]: Without dead ends: 70 [2023-11-21 20:58:32,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2023-11-21 20:58:32,414 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:32,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 129 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-21 20:58:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2023-11-21 20:58:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.162162162162162) internal successors, (43), 42 states have internal predecessors, (43), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-21 20:58:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2023-11-21 20:58:32,423 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 96 [2023-11-21 20:58:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:32,424 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2023-11-21 20:58:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 20:58:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2023-11-21 20:58:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-21 20:58:32,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:32,426 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:32,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:32,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 20:58:32,641 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_23_to_24_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:32,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash 489586001, now seen corresponding path program 1 times [2023-11-21 20:58:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832269646] [2023-11-21 20:58:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 20:58:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-21 20:58:34,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:34,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832269646] [2023-11-21 20:58:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832269646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:34,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:34,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:58:34,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065925063] [2023-11-21 20:58:34,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:34,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:58:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:58:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:58:34,205 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 20:58:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:34,419 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2023-11-21 20:58:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 20:58:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2023-11-21 20:58:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:34,422 INFO L225 Difference]: With dead ends: 69 [2023-11-21 20:58:34,422 INFO L226 Difference]: Without dead ends: 66 [2023-11-21 20:58:34,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:58:34,424 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:34,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 122 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-21 20:58:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-21 20:58:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-21 20:58:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2023-11-21 20:58:34,436 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 97 [2023-11-21 20:58:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:34,436 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2023-11-21 20:58:34,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 20:58:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2023-11-21 20:58:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-21 20:58:34,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:34,442 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:34,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 20:58:34,443 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:34,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1391897652, now seen corresponding path program 1 times [2023-11-21 20:58:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682079579] [2023-11-21 20:58:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:37,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 20:58:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 6 proven. 152 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-21 20:58:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682079579] [2023-11-21 20:58:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682079579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442934214] [2023-11-21 20:58:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:38,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:38,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:38,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:38,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 20:58:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:38,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-21 20:58:38,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:38,479 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 [2023-11-21 20:58:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-21 20:58:38,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:38,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442934214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:38,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:58:38,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 19 [2023-11-21 20:58:38,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879738376] [2023-11-21 20:58:38,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:38,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:58:38,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:58:38,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-21 20:58:38,814 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 20:58:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:38,992 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2023-11-21 20:58:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:58:38,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 106 [2023-11-21 20:58:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:38,997 INFO L225 Difference]: With dead ends: 74 [2023-11-21 20:58:38,997 INFO L226 Difference]: Without dead ends: 73 [2023-11-21 20:58:38,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-21 20:58:38,999 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 22 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:38,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 136 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:39,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-21 20:58:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-11-21 20:58:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 49 states have internal predecessors, (52), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (18), 13 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-21 20:58:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2023-11-21 20:58:39,010 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 106 [2023-11-21 20:58:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:39,011 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2023-11-21 20:58:39,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 20:58:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2023-11-21 20:58:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-21 20:58:39,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:39,013 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:39,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 20:58:39,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_22_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:39,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash 199154321, now seen corresponding path program 1 times [2023-11-21 20:58:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:39,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534798039] [2023-11-21 20:58:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 20:58:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 6 proven. 152 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-21 20:58:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534798039] [2023-11-21 20:58:42,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534798039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843273448] [2023-11-21 20:58:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:42,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:42,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:42,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 20:58:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-21 20:58:42,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:43,008 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 [2023-11-21 20:58:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-21 20:58:43,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843273448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:43,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:58:43,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-11-21 20:58:43,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449167890] [2023-11-21 20:58:43,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:43,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:58:43,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:58:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-21 20:58:43,031 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 20:58:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:43,151 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-11-21 20:58:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:58:43,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 107 [2023-11-21 20:58:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:43,153 INFO L225 Difference]: With dead ends: 71 [2023-11-21 20:58:43,153 INFO L226 Difference]: Without dead ends: 70 [2023-11-21 20:58:43,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-21 20:58:43,155 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:43,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 104 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-21 20:58:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-21 20:58:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (18), 13 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-21 20:58:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2023-11-21 20:58:43,164 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 107 [2023-11-21 20:58:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:43,164 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2023-11-21 20:58:43,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 20:58:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2023-11-21 20:58:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-21 20:58:43,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:43,167 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:43,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 20:58:43,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_23_to_24_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1100257950, now seen corresponding path program 1 times [2023-11-21 20:58:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318832845] [2023-11-21 20:58:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 20:58:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-21 20:58:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-11-21 20:58:45,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318832845] [2023-11-21 20:58:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318832845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59854604] [2023-11-21 20:58:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:45,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:45,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:45,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:45,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 20:58:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:46,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-21 20:58:46,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:46,458 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 [2023-11-21 20:58:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2023-11-21 20:58:46,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59854604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:58:46,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-21 20:58:46,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212199619] [2023-11-21 20:58:46,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:58:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:58:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-21 20:58:46,477 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 20:58:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:46,583 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-11-21 20:58:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:58:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 190 [2023-11-21 20:58:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:46,585 INFO L225 Difference]: With dead ends: 70 [2023-11-21 20:58:46,585 INFO L226 Difference]: Without dead ends: 69 [2023-11-21 20:58:46,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-21 20:58:46,586 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:46,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:58:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-21 20:58:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2023-11-21 20:58:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 11 states have call successors, (11), 8 states have call predecessors, (11), 10 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-21 20:58:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-11-21 20:58:46,594 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 190 [2023-11-21 20:58:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:46,596 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-11-21 20:58:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 20:58:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-11-21 20:58:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-21 20:58:46,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:46,600 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:46,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:46,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 20:58:46,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 20:58:46,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2081209741, now seen corresponding path program 1 times [2023-11-21 20:58:46,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:46,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82923849] [2023-11-21 20:58:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:46,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 20:58:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-21 20:58:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:58:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 20:58:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 20:58:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 20:58:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 21 proven. 423 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-11-21 20:58:50,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:50,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82923849] [2023-11-21 20:58:50,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82923849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:58:50,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363642730] [2023-11-21 20:58:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:50,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:58:50,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:50,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:58:50,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5186096-dcc8-44ab-a6b7-6f43fda66386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 20:58:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:50,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-21 20:58:50,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:50,496 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 [2023-11-21 20:58:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 672 proven. 3 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2023-11-21 20:58:50,965 INFO L327 TraceCheckSpWp]: Computing backward predicates...