./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd --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 b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:35:37,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:35:37,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:35:37,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:35:37,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:35:37,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:35:37,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:35:37,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:35:37,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:35:37,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:35:37,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:35:37,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:35:37,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:35:37,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:35:37,504 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:35:37,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:35:37,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:35:37,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:35:37,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:35:37,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:35:37,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:35:37,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:35:37,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:35:37,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:35:37,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:35:37,507 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:35:37,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:35:37,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:35:37,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:35:37,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:35:37,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:35:37,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:35:37,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:35:37,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:35:37,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:35:37,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:35:37,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:35:37,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:35:37,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:35:37,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:35:37,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:35:37,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:35:37,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:35:37,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:35:37,511 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd 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 -> b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 [2024-11-13 13:35:37,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:35:37,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:35:37,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:35:37,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:35:37,924 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:35:37,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c Unable to find full path for "g++" [2024-11-13 13:35:40,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:35:40,883 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:35:40,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-11-13 13:35:40,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/data/10acab5e1/8d96eed7aeea4c6083f7e6706abf88c7/FLAG5f9217e89 [2024-11-13 13:35:40,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/data/10acab5e1/8d96eed7aeea4c6083f7e6706abf88c7 [2024-11-13 13:35:40,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:35:40,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:35:40,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:35:40,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:35:40,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:35:40,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:35:40" (1/1) ... [2024-11-13 13:35:40,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@858db26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:40, skipping insertion in model container [2024-11-13 13:35:40,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:35:40" (1/1) ... [2024-11-13 13:35:40,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:35:41,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:35:41,267 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:35:41,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:35:41,341 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:35:41,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41 WrapperNode [2024-11-13 13:35:41,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:35:41,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:35:41,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:35:41,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:35:41,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,408 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-11-13 13:35:41,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:35:41,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:35:41,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:35:41,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:35:41,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,478 INFO L175 MemorySlicer]: Split 41 memory accesses to 6 slices as follows [2, 8, 2, 9, 8, 12]. 29 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 1, 2, 2, 2]. [2024-11-13 13:35:41,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:35:41,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:35:41,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:35:41,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:35:41,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (1/1) ... [2024-11-13 13:35:41,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:35:41,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:35:41,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:35:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:35:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:35:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_39_0 [2024-11-13 13:35:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_39_0 [2024-11-13 13:35:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:35:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:35:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:35:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 13:35:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 13:35:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 13:35:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:35:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:35:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:35:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:35:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 13:35:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 13:35:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 13:35:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:35:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:35:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:35:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:35:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:35:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 13:35:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 13:35:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 13:35:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 13:35:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 13:35:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:35:41,807 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:35:41,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:35:42,510 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-13 13:35:42,511 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:35:42,538 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:35:42,539 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:35:42,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:35:42 BoogieIcfgContainer [2024-11-13 13:35:42,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:35:42,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:35:42,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:35:42,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:35:42,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:35:40" (1/3) ... [2024-11-13 13:35:42,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfccecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:35:42, skipping insertion in model container [2024-11-13 13:35:42,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41" (2/3) ... [2024-11-13 13:35:42,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfccecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:35:42, skipping insertion in model container [2024-11-13 13:35:42,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:35:42" (3/3) ... [2024-11-13 13:35:42,558 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1.c [2024-11-13 13:35:42,581 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:35:42,584 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_sqrt1.c that has 3 procedures, 131 locations, 1 initial locations, 0 loop locations, and 50 error locations. [2024-11-13 13:35:42,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:35:42,729 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53f83129, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:35:42,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-13 13:35:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 13:35:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:35:42,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:42,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:35:42,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:35:42,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608053, now seen corresponding path program 1 times [2024-11-13 13:35:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:35:42,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354040241] [2024-11-13 13:35:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:42,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:35:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:35:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:35:43,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354040241] [2024-11-13 13:35:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354040241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:35:43,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:35:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:35:43,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126099349] [2024-11-13 13:35:43,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:35:43,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:35:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:35:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:35:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:35:43,719 INFO L87 Difference]: Start difference. First operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:35:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:35:44,131 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-11-13 13:35:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:35:44,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 13:35:44,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:35:44,153 INFO L225 Difference]: With dead ends: 328 [2024-11-13 13:35:44,154 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 13:35:44,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:35:44,171 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 118 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:35:44,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 588 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:35:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 13:35:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2024-11-13 13:35:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 144 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-13 13:35:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-13 13:35:44,275 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 6 [2024-11-13 13:35:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:35:44,275 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-13 13:35:44,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:35:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-13 13:35:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 13:35:44,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:44,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:35:44,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:35:44,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_39_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:35:44,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1492751008, now seen corresponding path program 1 times [2024-11-13 13:35:44,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:35:44,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090363046] [2024-11-13 13:35:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:44,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:35:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:44,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:35:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:35:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:35:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090363046] [2024-11-13 13:35:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090363046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:35:44,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:35:44,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:35:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340211627] [2024-11-13 13:35:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:35:44,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:35:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:35:44,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:35:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:35:44,836 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-13 13:35:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:35:45,109 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-11-13 13:35:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:35:45,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2024-11-13 13:35:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:35:45,112 INFO L225 Difference]: With dead ends: 194 [2024-11-13 13:35:45,113 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 13:35:45,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:35:45,114 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 113 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:35:45,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 553 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:35:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 13:35:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157. [2024-11-13 13:35:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 144 states have internal predecessors, (161), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-13 13:35:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-11-13 13:35:45,151 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 16 [2024-11-13 13:35:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:35:45,153 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-11-13 13:35:45,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-13 13:35:45,153 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-11-13 13:35:45,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 13:35:45,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:45,156 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:35:45,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:35:45,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_28_to_39_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:35:45,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -14640318, now seen corresponding path program 1 times [2024-11-13 13:35:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:35:45,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695200582] [2024-11-13 13:35:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:35:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:45,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:35:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:35:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:35:45,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695200582] [2024-11-13 13:35:45,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695200582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:35:45,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:35:45,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:35:45,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122806415] [2024-11-13 13:35:45,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:35:45,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:35:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:35:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:35:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:35:45,558 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-11-13 13:35:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:35:45,819 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2024-11-13 13:35:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:35:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 18 [2024-11-13 13:35:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:35:45,822 INFO L225 Difference]: With dead ends: 192 [2024-11-13 13:35:45,824 INFO L226 Difference]: Without dead ends: 190 [2024-11-13 13:35:45,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:35:45,826 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:35:45,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 550 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:35:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-13 13:35:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2024-11-13 13:35:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 144 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-13 13:35:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2024-11-13 13:35:45,857 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 18 [2024-11-13 13:35:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:35:45,858 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2024-11-13 13:35:45,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-11-13 13:35:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2024-11-13 13:35:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:35:45,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:45,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:35:45,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:35:45,859 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_28_to_39_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:35:45,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1184442076, now seen corresponding path program 1 times [2024-11-13 13:35:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:35:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522542999] [2024-11-13 13:35:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:35:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:35:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489928078] [2024-11-13 13:35:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:45,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:35:45,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:35:45,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:35:45,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:35:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:46,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:35:46,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:35:46,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:35:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:35:46,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:35:46,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:35:46,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522542999] [2024-11-13 13:35:46,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:35:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489928078] [2024-11-13 13:35:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489928078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:35:46,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:35:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:35:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834103686] [2024-11-13 13:35:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:35:46,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:35:46,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:35:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:35:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:35:46,414 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-13 13:35:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:35:46,730 INFO L93 Difference]: Finished difference Result 228 states and 237 transitions. [2024-11-13 13:35:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:35:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 20 [2024-11-13 13:35:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:35:46,732 INFO L225 Difference]: With dead ends: 228 [2024-11-13 13:35:46,733 INFO L226 Difference]: Without dead ends: 226 [2024-11-13 13:35:46,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:35:46,734 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:35:46,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 689 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:35:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-13 13:35:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 175. [2024-11-13 13:35:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6697247706422018) internal successors, (182), 159 states have internal predecessors, (182), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:35:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2024-11-13 13:35:46,752 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 20 [2024-11-13 13:35:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:35:46,752 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2024-11-13 13:35:46,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-13 13:35:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2024-11-13 13:35:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:35:46,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:46,754 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:35:46,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:35:46,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:35:46,958 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_28_to_39_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:35:46,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash -744717107, now seen corresponding path program 1 times [2024-11-13 13:35:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:35:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283617735] [2024-11-13 13:35:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:35:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:35:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786871634] [2024-11-13 13:35:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:47,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:35:47,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:35:47,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:35:47,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:35:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:35:47,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 13:35:47,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:35:47,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:35:47,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:35:47,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 13:35:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:35:47,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:35:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:35:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283617735] [2024-11-13 13:35:47,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:35:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786871634] [2024-11-13 13:35:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786871634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:35:47,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:35:47,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 13:35:47,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642114833] [2024-11-13 13:35:47,895 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 13:35:47,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:35:47,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:35:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:35:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:35:47,899 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 13:35:52,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:35:56,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:00,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:00,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:00,783 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-13 13:36:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:36:00,785 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-13 13:36:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:00,788 INFO L225 Difference]: With dead ends: 230 [2024-11-13 13:36:00,788 INFO L226 Difference]: Without dead ends: 229 [2024-11-13 13:36:00,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:36:00,792 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:00,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 871 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 348 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2024-11-13 13:36:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-13 13:36:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 175. [2024-11-13 13:36:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6605504587155964) internal successors, (181), 159 states have internal predecessors, (181), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2024-11-13 13:36:00,816 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 28 [2024-11-13 13:36:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:00,820 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2024-11-13 13:36:00,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 13:36:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2024-11-13 13:36:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:36:00,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:00,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:00,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:36:01,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:01,022 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_28_to_39_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:01,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1611393776, now seen corresponding path program 1 times [2024-11-13 13:36:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:01,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726675566] [2024-11-13 13:36:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106633889] [2024-11-13 13:36:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:01,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:01,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:01,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:36:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:01,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 13:36:01,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:01,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:01,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:01,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:01,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726675566] [2024-11-13 13:36:01,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:01,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106633889] [2024-11-13 13:36:01,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106633889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:01,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:01,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 13:36:01,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592615014] [2024-11-13 13:36:01,957 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:01,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:36:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:01,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:36:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:36:01,960 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 13:36:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:03,091 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-11-13 13:36:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:36:03,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-13 13:36:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:03,095 INFO L225 Difference]: With dead ends: 229 [2024-11-13 13:36:03,095 INFO L226 Difference]: Without dead ends: 228 [2024-11-13 13:36:03,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:36:03,096 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 200 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:03,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 933 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:36:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-13 13:36:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-13 13:36:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.651376146788991) internal successors, (180), 159 states have internal predecessors, (180), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-11-13 13:36:03,130 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 29 [2024-11-13 13:36:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:03,130 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-11-13 13:36:03,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 13:36:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-11-13 13:36:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 13:36:03,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:03,135 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:03,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:36:03,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:36:03,336 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_28_to_39_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:03,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1586400559, now seen corresponding path program 1 times [2024-11-13 13:36:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403820716] [2024-11-13 13:36:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:03,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:03,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:36:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403820716] [2024-11-13 13:36:03,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403820716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:03,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:03,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:03,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061580480] [2024-11-13 13:36:03,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:03,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:03,642 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:03,979 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-13 13:36:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:03,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-13 13:36:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:03,981 INFO L225 Difference]: With dead ends: 212 [2024-11-13 13:36:03,981 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 13:36:03,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:03,983 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 121 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:03,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 527 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:36:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 13:36:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-13 13:36:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6330275229357798) internal successors, (178), 159 states have internal predecessors, (178), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-11-13 13:36:03,999 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 30 [2024-11-13 13:36:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:04,000 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-11-13 13:36:04,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-11-13 13:36:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 13:36:04,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:04,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:04,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:36:04,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_28_to_39_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:04,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash -182450799, now seen corresponding path program 1 times [2024-11-13 13:36:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:04,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483300557] [2024-11-13 13:36:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:04,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572173771] [2024-11-13 13:36:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:04,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:04,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:04,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:04,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:36:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:04,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:36:04,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:04,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:04,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:04,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:05,472 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 38 treesize of output 26 [2024-11-13 13:36:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:36:05,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483300557] [2024-11-13 13:36:05,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572173771] [2024-11-13 13:36:05,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572173771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:05,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:36:05,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-13 13:36:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851310791] [2024-11-13 13:36:05,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:05,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:36:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:36:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:36:05,647 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 13:36:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:07,601 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-13 13:36:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:36:07,602 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2024-11-13 13:36:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:07,604 INFO L225 Difference]: With dead ends: 230 [2024-11-13 13:36:07,604 INFO L226 Difference]: Without dead ends: 228 [2024-11-13 13:36:07,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 13:36:07,606 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 371 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:07,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1206 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:36:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-13 13:36:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-13 13:36:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.614678899082569) internal successors, (176), 159 states have internal predecessors, (176), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-11-13 13:36:07,629 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 32 [2024-11-13 13:36:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:07,629 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-11-13 13:36:07,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 13:36:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-11-13 13:36:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 13:36:07,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:07,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:07,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:36:07,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 13:36:07,837 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_28_to_39_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:07,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:07,838 INFO L85 PathProgramCache]: Analyzing trace with hash 758443507, now seen corresponding path program 1 times [2024-11-13 13:36:07,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:07,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419436208] [2024-11-13 13:36:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:07,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:08,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:08,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:36:08,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419436208] [2024-11-13 13:36:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419436208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:08,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:08,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105703617] [2024-11-13 13:36:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:08,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:08,171 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:08,401 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-13 13:36:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-11-13 13:36:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:08,403 INFO L225 Difference]: With dead ends: 212 [2024-11-13 13:36:08,403 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 13:36:08,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:08,404 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 103 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:08,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 533 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 13:36:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-13 13:36:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5963302752293578) internal successors, (174), 159 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-13 13:36:08,419 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 34 [2024-11-13 13:36:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:08,420 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-13 13:36:08,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-13 13:36:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 13:36:08,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:08,421 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:08,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:36:08,421 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_28_to_39_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:08,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1280227755, now seen corresponding path program 1 times [2024-11-13 13:36:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:08,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773397330] [2024-11-13 13:36:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:08,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:08,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:36:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773397330] [2024-11-13 13:36:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773397330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26181438] [2024-11-13 13:36:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:36:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:36:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:08,749 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:09,068 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2024-11-13 13:36:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:09,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-13 13:36:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:09,071 INFO L225 Difference]: With dead ends: 210 [2024-11-13 13:36:09,071 INFO L226 Difference]: Without dead ends: 208 [2024-11-13 13:36:09,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:36:09,072 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 104 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:09,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 546 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:36:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-13 13:36:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-11-13 13:36:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5779816513761469) internal successors, (172), 159 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2024-11-13 13:36:09,088 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 36 [2024-11-13 13:36:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:09,088 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2024-11-13 13:36:09,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2024-11-13 13:36:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 13:36:09,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:09,090 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:09,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:36:09,090 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_28_to_39_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:09,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1032354664, now seen corresponding path program 1 times [2024-11-13 13:36:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:09,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346876500] [2024-11-13 13:36:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:36:09,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346876500] [2024-11-13 13:36:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346876500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:09,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:09,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:09,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860857087] [2024-11-13 13:36:09,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:09,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:36:09,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:36:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:09,801 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:10,809 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2024-11-13 13:36:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:10,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-13 13:36:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:10,812 INFO L225 Difference]: With dead ends: 200 [2024-11-13 13:36:10,812 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 13:36:10,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:36:10,813 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 95 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:10,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 585 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:36:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 13:36:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-11-13 13:36:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 159 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-11-13 13:36:10,830 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 37 [2024-11-13 13:36:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:10,830 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-11-13 13:36:10,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:36:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-11-13 13:36:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 13:36:10,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:10,832 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:10,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:36:10,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_28_to_39_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:10,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2054185613, now seen corresponding path program 1 times [2024-11-13 13:36:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:10,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920928771] [2024-11-13 13:36:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:10,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:11,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920928771] [2024-11-13 13:36:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920928771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936567111] [2024-11-13 13:36:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:11,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:11,134 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:11,304 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2024-11-13 13:36:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:11,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-11-13 13:36:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:11,310 INFO L225 Difference]: With dead ends: 185 [2024-11-13 13:36:11,310 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 13:36:11,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:11,311 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:11,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 566 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 13:36:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-11-13 13:36:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 161 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2024-11-13 13:36:11,338 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 47 [2024-11-13 13:36:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:11,339 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2024-11-13 13:36:11,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2024-11-13 13:36:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:36:11,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:11,342 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:11,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:36:11,342 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_28_to_39_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:11,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1612579153, now seen corresponding path program 1 times [2024-11-13 13:36:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:11,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172760716] [2024-11-13 13:36:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:11,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172760716] [2024-11-13 13:36:11,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172760716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:11,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:11,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378541698] [2024-11-13 13:36:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:11,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:11,608 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:11,805 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2024-11-13 13:36:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-11-13 13:36:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:11,808 INFO L225 Difference]: With dead ends: 204 [2024-11-13 13:36:11,808 INFO L226 Difference]: Without dead ends: 202 [2024-11-13 13:36:11,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:11,809 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 72 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:11,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 561 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-13 13:36:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2024-11-13 13:36:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 163 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-13 13:36:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-13 13:36:11,833 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 49 [2024-11-13 13:36:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:11,834 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-13 13:36:11,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-13 13:36:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 13:36:11,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:11,838 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:11,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:36:11,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:11,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1549267133, now seen corresponding path program 1 times [2024-11-13 13:36:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:11,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394999621] [2024-11-13 13:36:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:11,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:36:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:36:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:36:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:36:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:12,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394999621] [2024-11-13 13:36:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394999621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:12,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179867635] [2024-11-13 13:36:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:12,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:12,146 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:12,372 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2024-11-13 13:36:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:36:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-13 13:36:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:12,374 INFO L225 Difference]: With dead ends: 187 [2024-11-13 13:36:12,375 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 13:36:12,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:12,376 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 71 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:12,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 398 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 13:36:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-13 13:36:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-13 13:36:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-13 13:36:12,394 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-11-13 13:36:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:12,395 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-13 13:36:12,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-13 13:36:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 13:36:12,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:12,398 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:12,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:36:12,399 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_28_to_39_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:12,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash 794630865, now seen corresponding path program 1 times [2024-11-13 13:36:12,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:12,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825529004] [2024-11-13 13:36:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:12,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825529004] [2024-11-13 13:36:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825529004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029386075] [2024-11-13 13:36:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:13,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:36:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:36:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:13,037 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:13,345 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2024-11-13 13:36:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:13,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-13 13:36:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:13,348 INFO L225 Difference]: With dead ends: 195 [2024-11-13 13:36:13,348 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 13:36:13,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:36:13,349 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 60 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:13,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 621 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 13:36:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2024-11-13 13:36:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-13 13:36:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-11-13 13:36:13,373 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-11-13 13:36:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:13,373 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-11-13 13:36:13,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-11-13 13:36:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 13:36:13,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:13,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:13,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:36:13,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_28_to_39_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:13,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1136246862, now seen corresponding path program 1 times [2024-11-13 13:36:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555062733] [2024-11-13 13:36:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555062733] [2024-11-13 13:36:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555062733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:13,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572471812] [2024-11-13 13:36:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:13,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:36:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:36:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:13,958 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:14,246 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2024-11-13 13:36:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-13 13:36:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:14,248 INFO L225 Difference]: With dead ends: 195 [2024-11-13 13:36:14,248 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 13:36:14,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:36:14,249 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 59 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:14,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 626 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 13:36:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2024-11-13 13:36:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 166 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-13 13:36:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2024-11-13 13:36:14,271 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 52 [2024-11-13 13:36:14,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:14,272 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2024-11-13 13:36:14,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2024-11-13 13:36:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 13:36:14,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:14,275 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:14,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:36:14,276 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:14,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060323, now seen corresponding path program 1 times [2024-11-13 13:36:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:14,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554331922] [2024-11-13 13:36:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554331922] [2024-11-13 13:36:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554331922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612235948] [2024-11-13 13:36:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:14,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:14,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:36:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 13:36:14,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:14,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:14,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:15,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:36:15,802 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-13 13:36:15,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-13 13:36:15,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:36:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:36:15,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:36:16,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612235948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:16,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:16,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-13 13:36:16,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106934881] [2024-11-13 13:36:16,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:16,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 13:36:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 13:36:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:36:16,687 INFO L87 Difference]: Start difference. First operand 183 states and 199 transitions. Second operand has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 13:36:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:17,969 INFO L93 Difference]: Finished difference Result 205 states and 219 transitions. [2024-11-13 13:36:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 13:36:17,971 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2024-11-13 13:36:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:17,973 INFO L225 Difference]: With dead ends: 205 [2024-11-13 13:36:17,974 INFO L226 Difference]: Without dead ends: 202 [2024-11-13 13:36:17,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:36:17,977 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 574 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:17,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1420 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:36:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-13 13:36:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 180. [2024-11-13 13:36:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-13 13:36:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-11-13 13:36:17,996 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 56 [2024-11-13 13:36:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:17,996 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-11-13 13:36:17,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 13:36:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-11-13 13:36:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 13:36:17,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:17,998 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:18,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:36:18,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:36:18,199 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:18,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1165197016, now seen corresponding path program 1 times [2024-11-13 13:36:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:18,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85128742] [2024-11-13 13:36:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:18,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:18,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:18,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:18,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85128742] [2024-11-13 13:36:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85128742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:18,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379880954] [2024-11-13 13:36:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:18,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:18,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:18,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:18,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:36:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:18,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 13:36:18,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:18,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:18,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:36:19,397 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 [2024-11-13 13:36:19,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:36:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:36:19,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:19,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 13:36:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:36:20,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379880954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:20,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:20,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-13 13:36:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106616693] [2024-11-13 13:36:20,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:20,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 13:36:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 13:36:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:36:20,088 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 13:36:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:21,614 INFO L93 Difference]: Finished difference Result 334 states and 356 transitions. [2024-11-13 13:36:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:36:21,615 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2024-11-13 13:36:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:21,618 INFO L225 Difference]: With dead ends: 334 [2024-11-13 13:36:21,618 INFO L226 Difference]: Without dead ends: 331 [2024-11-13 13:36:21,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:36:21,620 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 473 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:21,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1860 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:36:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-13 13:36:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 257. [2024-11-13 13:36:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.521978021978022) internal successors, (277), 230 states have internal predecessors, (277), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 323 transitions. [2024-11-13 13:36:21,666 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 323 transitions. Word has length 57 [2024-11-13 13:36:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:21,666 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 323 transitions. [2024-11-13 13:36:21,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 13:36:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 323 transitions. [2024-11-13 13:36:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 13:36:21,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:21,668 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:21,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:36:21,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:36:21,869 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:21,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1285119462, now seen corresponding path program 1 times [2024-11-13 13:36:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:21,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688046273] [2024-11-13 13:36:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:36:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:36:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:36:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:36:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:36:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:36:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688046273] [2024-11-13 13:36:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688046273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:22,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:22,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255709054] [2024-11-13 13:36:22,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:22,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:22,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:22,140 INFO L87 Difference]: Start difference. First operand 257 states and 323 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:36:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:22,396 INFO L93 Difference]: Finished difference Result 262 states and 324 transitions. [2024-11-13 13:36:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-13 13:36:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:22,400 INFO L225 Difference]: With dead ends: 262 [2024-11-13 13:36:22,403 INFO L226 Difference]: Without dead ends: 260 [2024-11-13 13:36:22,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:22,404 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 64 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:22,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 379 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-13 13:36:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2024-11-13 13:36:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.510989010989011) internal successors, (275), 230 states have internal predecessors, (275), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2024-11-13 13:36:22,439 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 60 [2024-11-13 13:36:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:22,443 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2024-11-13 13:36:22,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:36:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2024-11-13 13:36:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 13:36:22,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:22,444 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:22,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:36:22,445 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:22,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1950782204, now seen corresponding path program 1 times [2024-11-13 13:36:22,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:22,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538899702] [2024-11-13 13:36:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:36:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:36:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:36:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:36:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:36:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:36:22,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:22,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538899702] [2024-11-13 13:36:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538899702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561543279] [2024-11-13 13:36:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:22,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:22,711 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:36:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:22,934 INFO L93 Difference]: Finished difference Result 260 states and 322 transitions. [2024-11-13 13:36:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:36:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-13 13:36:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:22,937 INFO L225 Difference]: With dead ends: 260 [2024-11-13 13:36:22,937 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 13:36:22,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:22,938 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 58 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:22,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 373 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 13:36:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-11-13 13:36:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.5) internal successors, (273), 230 states have internal predecessors, (273), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 319 transitions. [2024-11-13 13:36:22,973 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 319 transitions. Word has length 62 [2024-11-13 13:36:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:22,974 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 319 transitions. [2024-11-13 13:36:22,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:36:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 319 transitions. [2024-11-13 13:36:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 13:36:22,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:22,978 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:22,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 13:36:22,978 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:22,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2095961054, now seen corresponding path program 1 times [2024-11-13 13:36:22,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:22,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297687845] [2024-11-13 13:36:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:22,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388069540] [2024-11-13 13:36:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:23,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:23,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:36:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:23,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:36:23,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:23,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:23,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297687845] [2024-11-13 13:36:23,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388069540] [2024-11-13 13:36:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388069540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:23,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:23,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413584124] [2024-11-13 13:36:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:23,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:36:23,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:36:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:23,407 INFO L87 Difference]: Start difference. First operand 257 states and 319 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:36:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:23,743 INFO L93 Difference]: Finished difference Result 284 states and 343 transitions. [2024-11-13 13:36:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:36:23,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-13 13:36:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:23,747 INFO L225 Difference]: With dead ends: 284 [2024-11-13 13:36:23,747 INFO L226 Difference]: Without dead ends: 282 [2024-11-13 13:36:23,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:36:23,749 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 92 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:23,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 535 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 145 Invalid, 4 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:36:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-13 13:36:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-11-13 13:36:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.489010989010989) internal successors, (271), 230 states have internal predecessors, (271), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 317 transitions. [2024-11-13 13:36:23,775 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 317 transitions. Word has length 64 [2024-11-13 13:36:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:23,775 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 317 transitions. [2024-11-13 13:36:23,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:36:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 317 transitions. [2024-11-13 13:36:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 13:36:23,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:23,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:23,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:36:23,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:23,978 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_28_to_39_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:23,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash 322785458, now seen corresponding path program 1 times [2024-11-13 13:36:23,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:23,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711533012] [2024-11-13 13:36:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:23,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:36:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:36:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711533012] [2024-11-13 13:36:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711533012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:24,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097494085] [2024-11-13 13:36:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:24,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:24,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:24,141 INFO L87 Difference]: Start difference. First operand 257 states and 317 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:24,307 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2024-11-13 13:36:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:24,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 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 66 [2024-11-13 13:36:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:24,310 INFO L225 Difference]: With dead ends: 257 [2024-11-13 13:36:24,310 INFO L226 Difference]: Without dead ends: 256 [2024-11-13 13:36:24,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:24,312 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:24,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 464 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-13 13:36:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-13 13:36:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 182 states have (on average 1.4725274725274726) internal successors, (268), 229 states have internal predecessors, (268), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 314 transitions. [2024-11-13 13:36:24,347 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 314 transitions. Word has length 66 [2024-11-13 13:36:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:24,348 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 314 transitions. [2024-11-13 13:36:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 314 transitions. [2024-11-13 13:36:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 13:36:24,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:24,349 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:24,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 13:36:24,350 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_28_to_39_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:24,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1416414653, now seen corresponding path program 1 times [2024-11-13 13:36:24,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465309207] [2024-11-13 13:36:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:36:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:36:24,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:24,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465309207] [2024-11-13 13:36:24,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465309207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:24,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706327525] [2024-11-13 13:36:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:24,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:24,498 INFO L87 Difference]: Start difference. First operand 256 states and 314 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:24,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:24,635 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2024-11-13 13:36:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 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 67 [2024-11-13 13:36:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:24,639 INFO L225 Difference]: With dead ends: 256 [2024-11-13 13:36:24,639 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 13:36:24,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:24,642 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 49 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:24,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 369 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 13:36:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-13 13:36:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 182 states have (on average 1.456043956043956) internal successors, (265), 228 states have internal predecessors, (265), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 311 transitions. [2024-11-13 13:36:24,672 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 311 transitions. Word has length 67 [2024-11-13 13:36:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:24,673 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 311 transitions. [2024-11-13 13:36:24,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 311 transitions. [2024-11-13 13:36:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:36:24,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:24,675 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:24,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 13:36:24,677 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_28_to_39_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:24,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 959181332, now seen corresponding path program 1 times [2024-11-13 13:36:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534771720] [2024-11-13 13:36:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:24,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:36:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:36:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534771720] [2024-11-13 13:36:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534771720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:24,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:24,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739105252] [2024-11-13 13:36:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:24,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:24,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:24,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:24,849 INFO L87 Difference]: Start difference. First operand 255 states and 311 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:25,006 INFO L93 Difference]: Finished difference Result 255 states and 311 transitions. [2024-11-13 13:36:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:25,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 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 68 [2024-11-13 13:36:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:25,009 INFO L225 Difference]: With dead ends: 255 [2024-11-13 13:36:25,010 INFO L226 Difference]: Without dead ends: 254 [2024-11-13 13:36:25,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:25,011 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 44 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:25,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 395 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-13 13:36:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-13 13:36:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 227 states have internal predecessors, (262), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2024-11-13 13:36:25,040 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 68 [2024-11-13 13:36:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:25,043 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2024-11-13 13:36:25,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2024-11-13 13:36:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 13:36:25,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:25,045 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:25,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 13:36:25,045 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_28_to_39_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:25,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash -330149729, now seen corresponding path program 1 times [2024-11-13 13:36:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698327464] [2024-11-13 13:36:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:25,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:25,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:36:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:25,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:36:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:25,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:36:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:36:25,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698327464] [2024-11-13 13:36:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698327464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:25,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:25,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936581578] [2024-11-13 13:36:25,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:25,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:25,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:25,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:25,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:25,226 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:25,367 INFO L93 Difference]: Finished difference Result 254 states and 308 transitions. [2024-11-13 13:36:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 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 69 [2024-11-13 13:36:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:25,370 INFO L225 Difference]: With dead ends: 254 [2024-11-13 13:36:25,371 INFO L226 Difference]: Without dead ends: 253 [2024-11-13 13:36:25,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:25,372 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:25,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 364 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-13 13:36:25,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-13 13:36:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 226 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-11-13 13:36:25,397 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 69 [2024-11-13 13:36:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:25,398 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-11-13 13:36:25,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:36:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-11-13 13:36:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:36:25,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:25,399 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:25,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 13:36:25,399 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_28_to_39_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:25,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1644706954, now seen corresponding path program 1 times [2024-11-13 13:36:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989056519] [2024-11-13 13:36:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424382016] [2024-11-13 13:36:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:25,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:25,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:25,441 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:36:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:25,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 13:36:25,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:25,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:25,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:36:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:26,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 13:36:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989056519] [2024-11-13 13:36:26,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424382016] [2024-11-13 13:36:26,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424382016] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:26,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2024-11-13 13:36:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513665689] [2024-11-13 13:36:26,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:26,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:36:26,191 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:26,299 INFO L93 Difference]: Finished difference Result 253 states and 305 transitions. [2024-11-13 13:36:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:36:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2024-11-13 13:36:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:26,302 INFO L225 Difference]: With dead ends: 253 [2024-11-13 13:36:26,302 INFO L226 Difference]: Without dead ends: 252 [2024-11-13 13:36:26,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:36:26,303 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 7 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:26,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 324 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-13 13:36:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-13 13:36:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 182 states have (on average 1.4065934065934067) internal successors, (256), 225 states have internal predecessors, (256), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 302 transitions. [2024-11-13 13:36:26,336 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 302 transitions. Word has length 70 [2024-11-13 13:36:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:26,337 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 302 transitions. [2024-11-13 13:36:26,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 13:36:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 302 transitions. [2024-11-13 13:36:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 13:36:26,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:26,338 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:26,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:36:26,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:26,544 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_28_to_39_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:26,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:26,544 INFO L85 PathProgramCache]: Analyzing trace with hash 553692033, now seen corresponding path program 1 times [2024-11-13 13:36:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:26,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723062976] [2024-11-13 13:36:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:26,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:26,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884437586] [2024-11-13 13:36:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:26,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:26,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:26,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:26,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:36:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:26,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 13:36:26,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:26,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:27,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:36:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:36:27,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723062976] [2024-11-13 13:36:28,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884437586] [2024-11-13 13:36:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884437586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:28,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-13 13:36:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878046465] [2024-11-13 13:36:28,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:28,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:36:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:36:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:36:28,043 INFO L87 Difference]: Start difference. First operand 252 states and 302 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:36:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:29,589 INFO L93 Difference]: Finished difference Result 292 states and 326 transitions. [2024-11-13 13:36:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 13:36:29,589 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2024-11-13 13:36:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:29,593 INFO L225 Difference]: With dead ends: 292 [2024-11-13 13:36:29,593 INFO L226 Difference]: Without dead ends: 291 [2024-11-13 13:36:29,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 13:36:29,596 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 243 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:29,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1726 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:36:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-13 13:36:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 252. [2024-11-13 13:36:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 182 states have (on average 1.401098901098901) internal successors, (255), 225 states have internal predecessors, (255), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 301 transitions. [2024-11-13 13:36:29,644 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 301 transitions. Word has length 71 [2024-11-13 13:36:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:29,652 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 301 transitions. [2024-11-13 13:36:29,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:36:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 301 transitions. [2024-11-13 13:36:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 13:36:29,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:29,653 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:29,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:36:29,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 13:36:29,854 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:29,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 656013135, now seen corresponding path program 1 times [2024-11-13 13:36:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:29,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063268557] [2024-11-13 13:36:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66961902] [2024-11-13 13:36:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:29,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:29,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:36:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:30,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:36:30,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:30,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:30,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 13:36:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:36:30,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:30,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:30,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063268557] [2024-11-13 13:36:30,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66961902] [2024-11-13 13:36:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66961902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:30,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:30,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:30,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831242630] [2024-11-13 13:36:30,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:30,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:30,341 INFO L87 Difference]: Start difference. First operand 252 states and 301 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:34,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:38,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:42,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:42,681 INFO L93 Difference]: Finished difference Result 277 states and 325 transitions. [2024-11-13 13:36:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:36:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-11-13 13:36:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:42,684 INFO L225 Difference]: With dead ends: 277 [2024-11-13 13:36:42,685 INFO L226 Difference]: Without dead ends: 276 [2024-11-13 13:36:42,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:36:42,687 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 113 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:42,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 345 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-13 13:36:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-13 13:36:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2024-11-13 13:36:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 184 states have (on average 1.3967391304347827) internal successors, (257), 226 states have internal predecessors, (257), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 303 transitions. [2024-11-13 13:36:42,722 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 303 transitions. Word has length 72 [2024-11-13 13:36:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:42,722 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 303 transitions. [2024-11-13 13:36:42,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 303 transitions. [2024-11-13 13:36:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:36:42,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:42,725 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:42,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:36:42,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:36:42,926 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:42,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1138429158, now seen corresponding path program 1 times [2024-11-13 13:36:42,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:42,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545103853] [2024-11-13 13:36:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277147647] [2024-11-13 13:36:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:42,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:42,965 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:42,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:36:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:43,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:36:43,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:43,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:36:43,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:43,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:43,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545103853] [2024-11-13 13:36:43,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:43,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277147647] [2024-11-13 13:36:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277147647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:43,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:43,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:43,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306926452] [2024-11-13 13:36:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:43,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:43,416 INFO L87 Difference]: Start difference. First operand 254 states and 303 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:43,765 INFO L93 Difference]: Finished difference Result 276 states and 324 transitions. [2024-11-13 13:36:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:36:43,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-13 13:36:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:43,772 INFO L225 Difference]: With dead ends: 276 [2024-11-13 13:36:43,773 INFO L226 Difference]: Without dead ends: 275 [2024-11-13 13:36:43,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:36:43,774 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 110 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:43,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 347 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:36:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-13 13:36:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2024-11-13 13:36:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 185 states have (on average 1.3945945945945946) internal successors, (258), 227 states have internal predecessors, (258), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 304 transitions. [2024-11-13 13:36:43,802 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 304 transitions. Word has length 73 [2024-11-13 13:36:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:43,802 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 304 transitions. [2024-11-13 13:36:43,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 304 transitions. [2024-11-13 13:36:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:36:43,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:43,804 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:43,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 13:36:44,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:36:44,005 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:44,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash -931565391, now seen corresponding path program 1 times [2024-11-13 13:36:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:44,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857893276] [2024-11-13 13:36:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:44,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:36:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:36:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:36:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:36:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:36:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:36:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:36:44,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:44,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857893276] [2024-11-13 13:36:44,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857893276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:44,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:44,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138569243] [2024-11-13 13:36:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:44,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:44,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:44,293 INFO L87 Difference]: Start difference. First operand 255 states and 304 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:44,658 INFO L93 Difference]: Finished difference Result 269 states and 323 transitions. [2024-11-13 13:36:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-11-13 13:36:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:44,661 INFO L225 Difference]: With dead ends: 269 [2024-11-13 13:36:44,662 INFO L226 Difference]: Without dead ends: 267 [2024-11-13 13:36:44,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:44,663 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 68 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:44,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 313 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:36:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-13 13:36:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 257. [2024-11-13 13:36:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 187 states have (on average 1.3903743315508021) internal successors, (260), 229 states have internal predecessors, (260), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 306 transitions. [2024-11-13 13:36:44,695 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 306 transitions. Word has length 74 [2024-11-13 13:36:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:44,696 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 306 transitions. [2024-11-13 13:36:44,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 306 transitions. [2024-11-13 13:36:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 13:36:44,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:44,697 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:44,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 13:36:44,698 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:44,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1881138669, now seen corresponding path program 1 times [2024-11-13 13:36:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307692238] [2024-11-13 13:36:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:44,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452201134] [2024-11-13 13:36:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:44,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:44,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:44,759 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:44,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:36:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:36:44,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:44,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:44,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:36:45,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:45,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307692238] [2024-11-13 13:36:45,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452201134] [2024-11-13 13:36:45,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452201134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:45,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:45,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940625818] [2024-11-13 13:36:45,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:45,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:36:45,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:36:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:36:45,502 INFO L87 Difference]: Start difference. First operand 257 states and 306 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:46,015 INFO L93 Difference]: Finished difference Result 273 states and 321 transitions. [2024-11-13 13:36:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:36:46,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-11-13 13:36:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:46,018 INFO L225 Difference]: With dead ends: 273 [2024-11-13 13:36:46,019 INFO L226 Difference]: Without dead ends: 271 [2024-11-13 13:36:46,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:36:46,021 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 91 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:46,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 447 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 205 Invalid, 3 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:36:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-13 13:36:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 259. [2024-11-13 13:36:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 189 states have (on average 1.3862433862433863) internal successors, (262), 231 states have internal predecessors, (262), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-13 13:36:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 308 transitions. [2024-11-13 13:36:46,050 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 308 transitions. Word has length 76 [2024-11-13 13:36:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:46,050 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 308 transitions. [2024-11-13 13:36:46,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 308 transitions. [2024-11-13 13:36:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:36:46,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:46,053 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:46,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 13:36:46,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 13:36:46,260 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_28_to_39_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:46,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash 865008927, now seen corresponding path program 1 times [2024-11-13 13:36:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607869838] [2024-11-13 13:36:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:46,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128543472] [2024-11-13 13:36:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:46,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:46,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:46,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:36:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:46,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 13:36:46,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:46,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:46,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:36:46,922 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 [2024-11-13 13:36:47,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 13:36:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 29 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:36:47,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607869838] [2024-11-13 13:36:47,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:36:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128543472] [2024-11-13 13:36:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128543472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:47,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-13 13:36:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35847621] [2024-11-13 13:36:47,355 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:47,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:36:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:36:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:36:47,357 INFO L87 Difference]: Start difference. First operand 259 states and 308 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 13:36:51,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:55,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:56,642 INFO L93 Difference]: Finished difference Result 273 states and 322 transitions. [2024-11-13 13:36:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:36:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2024-11-13 13:36:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:56,646 INFO L225 Difference]: With dead ends: 273 [2024-11-13 13:36:56,646 INFO L226 Difference]: Without dead ends: 271 [2024-11-13 13:36:56,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:36:56,649 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 311 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 33 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:56,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1412 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 746 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2024-11-13 13:36:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-13 13:36:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 259. [2024-11-13 13:36:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 190 states have (on average 1.3578947368421053) internal successors, (258), 230 states have internal predecessors, (258), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-13 13:36:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 306 transitions. [2024-11-13 13:36:56,694 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 306 transitions. Word has length 78 [2024-11-13 13:36:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:56,694 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 306 transitions. [2024-11-13 13:36:56,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 13:36:56,694 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 306 transitions. [2024-11-13 13:36:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:36:56,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:56,696 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:56,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:36:56,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 13:36:56,903 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:56,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash 406975349, now seen corresponding path program 1 times [2024-11-13 13:36:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:56,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284589627] [2024-11-13 13:36:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:36:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:36:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:36:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:36:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:36:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:36:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:36:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:57,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284589627] [2024-11-13 13:36:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284589627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:57,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:57,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:36:57,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692261726] [2024-11-13 13:36:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:57,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:57,164 INFO L87 Difference]: Start difference. First operand 259 states and 306 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:57,374 INFO L93 Difference]: Finished difference Result 267 states and 317 transitions. [2024-11-13 13:36:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-11-13 13:36:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:57,376 INFO L225 Difference]: With dead ends: 267 [2024-11-13 13:36:57,376 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 13:36:57,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:57,377 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 75 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:57,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 292 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:36:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 13:36:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2024-11-13 13:36:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 192 states have (on average 1.3541666666666667) internal successors, (260), 232 states have internal predecessors, (260), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-13 13:36:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 308 transitions. [2024-11-13 13:36:57,407 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 308 transitions. Word has length 78 [2024-11-13 13:36:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:57,407 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 308 transitions. [2024-11-13 13:36:57,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:36:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 308 transitions. [2024-11-13 13:36:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 13:36:57,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:57,410 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:57,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 13:36:57,411 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_28_to_39_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:36:57,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1045473022, now seen corresponding path program 1 times [2024-11-13 13:36:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:57,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265798102] [2024-11-13 13:36:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:57,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:36:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729846172] [2024-11-13 13:36:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:57,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:57,448 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:57,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:36:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:57,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-13 13:36:57,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:57,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:36:57,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:57,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:36:59,497 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 25 treesize of output 13 [2024-11-13 13:36:59,628 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 29 treesize of output 17 [2024-11-13 13:37:00,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:37:00,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 34 [2024-11-13 13:37:04,978 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 30 treesize of output 18 [2024-11-13 13:37:34,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:37:34,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 88 [2024-11-13 13:37:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 42 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:37:34,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:35,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:35,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265798102] [2024-11-13 13:37:35,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:37:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729846172] [2024-11-13 13:37:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729846172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:35,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:37:35,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2024-11-13 13:37:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295721612] [2024-11-13 13:37:35,724 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:35,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 13:37:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 13:37:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=768, Unknown=8, NotChecked=0, Total=870 [2024-11-13 13:37:35,726 INFO L87 Difference]: Start difference. First operand 261 states and 308 transitions. Second operand has 27 states, 25 states have (on average 2.56) internal successors, (64), 21 states have internal predecessors, (64), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 13:37:39,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:37:44,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:37:48,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:38:30,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:38:34,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:38:38,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:38:43,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:38:47,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:38:51,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:38:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:51,799 INFO L93 Difference]: Finished difference Result 338 states and 371 transitions. [2024-11-13 13:38:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:38:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.56) internal successors, (64), 21 states have internal predecessors, (64), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 79 [2024-11-13 13:38:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:51,815 INFO L225 Difference]: With dead ends: 338 [2024-11-13 13:38:51,815 INFO L226 Difference]: Without dead ends: 337 [2024-11-13 13:38:51,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 71.3s TimeCoverageRelationStatistics Valid=246, Invalid=1718, Unknown=16, NotChecked=0, Total=1980 [2024-11-13 13:38:51,817 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 391 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 40 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:51,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1657 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1340 Invalid, 9 Unknown, 0 Unchecked, 41.0s Time] [2024-11-13 13:38:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-13 13:38:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 283. [2024-11-13 13:38:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 210 states have (on average 1.3666666666666667) internal successors, (287), 250 states have internal predecessors, (287), 22 states have call successors, (22), 8 states have call predecessors, (22), 12 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-13 13:38:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 339 transitions. [2024-11-13 13:38:51,850 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 339 transitions. Word has length 79 [2024-11-13 13:38:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:51,851 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 339 transitions. [2024-11-13 13:38:51,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.56) internal successors, (64), 21 states have internal predecessors, (64), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 13:38:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 339 transitions. [2024-11-13 13:38:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:38:51,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:51,853 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:51,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:38:52,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:52,054 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_28_to_39_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:38:52,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1950074623, now seen corresponding path program 1 times [2024-11-13 13:38:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306780521] [2024-11-13 13:38:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:38:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:38:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:38:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:38:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:38:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:38:53,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:53,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306780521] [2024-11-13 13:38:53,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306780521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:53,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492653033] [2024-11-13 13:38:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:53,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:53,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:53,093 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:53,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:38:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:53,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 13:38:53,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:53,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:38:53,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:38:53,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:38:55,646 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 [2024-11-13 13:38:55,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:38:55,986 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-13 13:38:55,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-13 13:38:56,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:38:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:38:56,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:38:57,787 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 30 treesize of output 22 [2024-11-13 13:38:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:38:58,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492653033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:38:58,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:38:58,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 33 [2024-11-13 13:38:58,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631475343] [2024-11-13 13:38:58,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:38:58,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:38:58,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:38:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:38:58,103 INFO L87 Difference]: Start difference. First operand 283 states and 339 transitions. Second operand has 34 states, 30 states have (on average 5.166666666666667) internal successors, (155), 28 states have internal predecessors, (155), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 13:39:02,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:07,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:11,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:17,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:21,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:25,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:29,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:34,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:38,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:42,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:46,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:50,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:54,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:58,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:39:58,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:58,134 INFO L93 Difference]: Finished difference Result 339 states and 370 transitions. [2024-11-13 13:39:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:39:58,135 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 5.166666666666667) internal successors, (155), 28 states have internal predecessors, (155), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 80 [2024-11-13 13:39:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:58,137 INFO L225 Difference]: With dead ends: 339 [2024-11-13 13:39:58,138 INFO L226 Difference]: Without dead ends: 338 [2024-11-13 13:39:58,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=318, Invalid=2334, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:39:58,140 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 421 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 55 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:58,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 2354 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1637 Invalid, 14 Unknown, 0 Unchecked, 58.7s Time] [2024-11-13 13:39:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-13 13:39:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 283. [2024-11-13 13:39:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 210 states have (on average 1.361904761904762) internal successors, (286), 250 states have internal predecessors, (286), 22 states have call successors, (22), 8 states have call predecessors, (22), 12 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-13 13:39:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 338 transitions. [2024-11-13 13:39:58,173 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 338 transitions. Word has length 80 [2024-11-13 13:39:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:58,173 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 338 transitions. [2024-11-13 13:39:58,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 5.166666666666667) internal successors, (155), 28 states have internal predecessors, (155), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 13:39:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 338 transitions. [2024-11-13 13:39:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:39:58,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:58,175 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:58,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 13:39:58,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 13:39:58,381 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:39:58,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash 261291223, now seen corresponding path program 1 times [2024-11-13 13:39:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:58,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303680358] [2024-11-13 13:39:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:39:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:39:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:39:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:39:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:39:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:39:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:39:58,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:58,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303680358] [2024-11-13 13:39:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303680358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:58,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:39:58,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:39:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688664475] [2024-11-13 13:39:58,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:58,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:39:58,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:39:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:39:58,756 INFO L87 Difference]: Start difference. First operand 283 states and 338 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:39:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:59,296 INFO L93 Difference]: Finished difference Result 289 states and 345 transitions. [2024-11-13 13:39:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:39:59,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2024-11-13 13:39:59,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:59,300 INFO L225 Difference]: With dead ends: 289 [2024-11-13 13:39:59,301 INFO L226 Difference]: Without dead ends: 287 [2024-11-13 13:39:59,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:39:59,302 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 54 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:59,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 336 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:39:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-13 13:39:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2024-11-13 13:39:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 213 states have (on average 1.3615023474178405) internal successors, (290), 253 states have internal predecessors, (290), 22 states have call successors, (22), 8 states have call predecessors, (22), 12 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-13 13:39:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 342 transitions. [2024-11-13 13:39:59,339 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 342 transitions. Word has length 80 [2024-11-13 13:39:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:59,339 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 342 transitions. [2024-11-13 13:39:59,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:39:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 342 transitions. [2024-11-13 13:39:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 13:39:59,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:59,340 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-13 13:39:59,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-13 13:39:59,341 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_28_to_39_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:39:59,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash -322771104, now seen corresponding path program 1 times [2024-11-13 13:39:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:59,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461867845] [2024-11-13 13:39:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:40:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:40:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:40:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:40:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:40:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:40:00,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:00,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461867845] [2024-11-13 13:40:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461867845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118858852] [2024-11-13 13:40:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:00,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:40:00,254 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:40:00,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:40:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:00,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 13:40:00,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:00,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:40:00,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:40:00,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:40:02,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 13:40:02,442 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-13 13:40:02,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-13 13:40:02,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:40:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:40:02,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:40:03,758 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 29 treesize of output 21 [2024-11-13 13:40:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:40:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118858852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:40:03,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:40:03,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 33 [2024-11-13 13:40:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820999003] [2024-11-13 13:40:03,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:40:03,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:40:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:40:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:40:03,997 INFO L87 Difference]: Start difference. First operand 286 states and 342 transitions. Second operand has 34 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 13:40:10,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:14,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:40:14,846 INFO L93 Difference]: Finished difference Result 336 states and 367 transitions. [2024-11-13 13:40:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 13:40:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 81 [2024-11-13 13:40:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:40:14,849 INFO L225 Difference]: With dead ends: 336 [2024-11-13 13:40:14,850 INFO L226 Difference]: Without dead ends: 335 [2024-11-13 13:40:14,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 142 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=307, Invalid=1855, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:40:14,852 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 332 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:40:14,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1413 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 978 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2024-11-13 13:40:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-13 13:40:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 286. [2024-11-13 13:40:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 213 states have (on average 1.3568075117370892) internal successors, (289), 253 states have internal predecessors, (289), 22 states have call successors, (22), 8 states have call predecessors, (22), 12 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-13 13:40:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 341 transitions. [2024-11-13 13:40:14,892 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 341 transitions. Word has length 81 [2024-11-13 13:40:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:40:14,893 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 341 transitions. [2024-11-13 13:40:14,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 13:40:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 341 transitions. [2024-11-13 13:40:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 13:40:14,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:40:14,895 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:40:14,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:40:15,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 13:40:15,096 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:40:15,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:40:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash -489906526, now seen corresponding path program 1 times [2024-11-13 13:40:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:40:15,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333552890] [2024-11-13 13:40:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:40:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:40:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 13:40:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:40:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 13:40:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:40:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:40:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:40:15,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333552890] [2024-11-13 13:40:15,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333552890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:40:15,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:40:15,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:40:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114187229] [2024-11-13 13:40:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:40:15,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:40:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:40:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:40:15,894 INFO L87 Difference]: Start difference. First operand 286 states and 341 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:40:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:40:16,903 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2024-11-13 13:40:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:40:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-11-13 13:40:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:40:16,906 INFO L225 Difference]: With dead ends: 289 [2024-11-13 13:40:16,907 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 13:40:16,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:40:16,908 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 53 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:40:16,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 379 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:40:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 13:40:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-13 13:40:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.3936170212765957) internal successors, (262), 228 states have internal predecessors, (262), 20 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-13 13:40:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 309 transitions. [2024-11-13 13:40:16,948 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 309 transitions. Word has length 81 [2024-11-13 13:40:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:40:16,949 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 309 transitions. [2024-11-13 13:40:16,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:40:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 309 transitions. [2024-11-13 13:40:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 13:40:16,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:40:16,950 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-11-13 13:40:16,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-13 13:40:16,951 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_28_to_39_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:40:16,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:40:16,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1415969565, now seen corresponding path program 1 times [2024-11-13 13:40:16,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:40:16,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329586738] [2024-11-13 13:40:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:16,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:40:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:40:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401316660] [2024-11-13 13:40:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:17,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:17,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:40:17,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:40:17,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:40:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:17,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-13 13:40:17,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:17,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:40:17,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:40:17,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:40:18,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:40:18,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 13:40:18,697 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 [2024-11-13 13:40:19,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:40:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:40:19,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:40:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329586738] [2024-11-13 13:40:20,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:40:20,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401316660] [2024-11-13 13:40:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401316660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:20,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:40:20,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-13 13:40:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976038198] [2024-11-13 13:40:20,360 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 13:40:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:40:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:40:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:40:20,362 INFO L87 Difference]: Start difference. First operand 258 states and 309 transitions. Second operand has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:40:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:40:22,134 INFO L93 Difference]: Finished difference Result 302 states and 333 transitions. [2024-11-13 13:40:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:40:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2024-11-13 13:40:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:40:22,137 INFO L225 Difference]: With dead ends: 302 [2024-11-13 13:40:22,137 INFO L226 Difference]: Without dead ends: 301 [2024-11-13 13:40:22,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:40:22,139 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 181 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:40:22,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 868 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 13:40:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-13 13:40:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2024-11-13 13:40:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.3882978723404256) internal successors, (261), 228 states have internal predecessors, (261), 20 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-13 13:40:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 308 transitions. [2024-11-13 13:40:22,174 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 308 transitions. Word has length 82 [2024-11-13 13:40:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:40:22,174 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 308 transitions. [2024-11-13 13:40:22,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:40:22,175 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 308 transitions. [2024-11-13 13:40:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 13:40:22,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:40:22,176 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-13 13:40:22,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:40:22,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 13:40:22,377 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_28_to_39_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:40:22,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:40:22,377 INFO L85 PathProgramCache]: Analyzing trace with hash -945383486, now seen corresponding path program 1 times [2024-11-13 13:40:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:40:22,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207537912] [2024-11-13 13:40:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:22,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:40:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:40:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:40:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:40:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:40:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:40:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:40:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207537912] [2024-11-13 13:40:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207537912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585671153] [2024-11-13 13:40:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:23,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:23,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:40:23,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:40:23,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:40:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:23,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 13:40:23,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:23,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:40:23,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:40:23,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:40:25,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 13:40:25,737 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-13 13:40:25,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-11-13 13:40:26,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:40:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:40:26,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:40:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585671153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:27,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:40:27,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 24 [2024-11-13 13:40:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912851660] [2024-11-13 13:40:27,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:40:27,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:40:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:40:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:40:27,175 INFO L87 Difference]: Start difference. First operand 258 states and 308 transitions. Second operand has 25 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 6 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-13 13:40:31,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:36,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:40,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:46,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:51,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:55,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:40:59,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:03,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:07,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:11,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:15,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:19,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:23,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:41:23,632 INFO L93 Difference]: Finished difference Result 303 states and 332 transitions. [2024-11-13 13:41:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:41:23,633 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 6 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 83 [2024-11-13 13:41:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:41:23,635 INFO L225 Difference]: With dead ends: 303 [2024-11-13 13:41:23,635 INFO L226 Difference]: Without dead ends: 302 [2024-11-13 13:41:23,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 79 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=241, Invalid=1651, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:41:23,637 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 308 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 40 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:41:23,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1788 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1143 Invalid, 13 Unknown, 0 Unchecked, 55.1s Time] [2024-11-13 13:41:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-13 13:41:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2024-11-13 13:41:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.3829787234042554) internal successors, (260), 228 states have internal predecessors, (260), 20 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-13 13:41:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2024-11-13 13:41:23,674 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 83 [2024-11-13 13:41:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:41:23,675 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2024-11-13 13:41:23,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 6 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-13 13:41:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2024-11-13 13:41:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 13:41:23,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:41:23,676 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-11-13 13:41:23,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:41:23,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 13:41:23,877 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_28_to_39_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:41:23,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:41:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 757883077, now seen corresponding path program 1 times [2024-11-13 13:41:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:41:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79650597] [2024-11-13 13:41:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:41:23,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:41:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:41:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:41:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:41:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:41:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:41:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:41:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:41:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79650597] [2024-11-13 13:41:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79650597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:41:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103529405] [2024-11-13 13:41:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:41:24,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:41:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:41:24,458 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:41:24,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:41:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:24,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 13:41:24,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:41:24,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:41:25,744 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 [2024-11-13 13:41:25,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:41:26,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:41:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:41:26,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:41:26,840 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 25 treesize of output 17 [2024-11-13 13:41:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:41:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103529405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:41:27,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:41:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 12] total 32 [2024-11-13 13:41:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365831900] [2024-11-13 13:41:27,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:41:27,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 13:41:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:41:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 13:41:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 13:41:27,459 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 33 states, 29 states have (on average 5.931034482758621) internal successors, (172), 27 states have internal predecessors, (172), 12 states have call successors, (21), 9 states have call predecessors, (21), 6 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 13:41:31,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:36,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:42,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:46,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:41:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:41:46,951 INFO L93 Difference]: Finished difference Result 268 states and 310 transitions. [2024-11-13 13:41:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:41:46,952 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.931034482758621) internal successors, (172), 27 states have internal predecessors, (172), 12 states have call successors, (21), 9 states have call predecessors, (21), 6 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 84 [2024-11-13 13:41:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:41:46,953 INFO L225 Difference]: With dead ends: 268 [2024-11-13 13:41:46,953 INFO L226 Difference]: Without dead ends: 267 [2024-11-13 13:41:46,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 149 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=471, Invalid=2609, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 13:41:46,954 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 650 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 74 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:41:46,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1268 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 912 Invalid, 4 Unknown, 0 Unchecked, 17.9s Time] [2024-11-13 13:41:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-13 13:41:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 261. [2024-11-13 13:41:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 191 states have (on average 1.361256544502618) internal successors, (260), 230 states have internal predecessors, (260), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-13 13:41:46,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 307 transitions. [2024-11-13 13:41:46,987 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 307 transitions. Word has length 84 [2024-11-13 13:41:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:41:46,987 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 307 transitions. [2024-11-13 13:41:46,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.931034482758621) internal successors, (172), 27 states have internal predecessors, (172), 12 states have call successors, (21), 9 states have call predecessors, (21), 6 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 13:41:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 307 transitions. [2024-11-13 13:41:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 13:41:46,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:41:46,989 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-13 13:41:47,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 13:41:47,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-13 13:41:47,193 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_28_to_39_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:41:47,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:41:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2019538980, now seen corresponding path program 1 times [2024-11-13 13:41:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:41:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979587557] [2024-11-13 13:41:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:41:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:41:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:41:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:41:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:41:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:41:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:41:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:41:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:41:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979587557] [2024-11-13 13:41:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979587557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:41:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851181971] [2024-11-13 13:41:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:41:47,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:41:47,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:41:47,659 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:41:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:41:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:47,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 13:41:47,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:41:47,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:41:48,421 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 [2024-11-13 13:41:48,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:41:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:41:48,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:41:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:41:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851181971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:41:49,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:41:49,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 21 [2024-11-13 13:41:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430106682] [2024-11-13 13:41:49,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:41:49,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:41:49,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:41:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:41:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:41:49,129 INFO L87 Difference]: Start difference. First operand 261 states and 307 transitions. Second operand has 22 states, 18 states have (on average 8.722222222222221) internal successors, (157), 17 states have internal predecessors, (157), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 13:41:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:41:50,336 INFO L93 Difference]: Finished difference Result 320 states and 337 transitions. [2024-11-13 13:41:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:41:50,337 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 8.722222222222221) internal successors, (157), 17 states have internal predecessors, (157), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 85 [2024-11-13 13:41:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:41:50,339 INFO L225 Difference]: With dead ends: 320 [2024-11-13 13:41:50,339 INFO L226 Difference]: Without dead ends: 318 [2024-11-13 13:41:50,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 159 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:41:50,340 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 448 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:41:50,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1094 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:41:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-13 13:41:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 261. [2024-11-13 13:41:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 191 states have (on average 1.3455497382198953) internal successors, (257), 230 states have internal predecessors, (257), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-13 13:41:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 304 transitions. [2024-11-13 13:41:50,379 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 304 transitions. Word has length 85 [2024-11-13 13:41:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:41:50,379 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 304 transitions. [2024-11-13 13:41:50,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 8.722222222222221) internal successors, (157), 17 states have internal predecessors, (157), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 13:41:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 304 transitions. [2024-11-13 13:41:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 13:41:50,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:41:50,381 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 13:41:50,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 13:41:50,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4efa36-bc3c-4aee-8208-4411d0091ab2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-13 13:41:50,582 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_28_to_39_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-13 13:41:50,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:41:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1818800985, now seen corresponding path program 1 times [2024-11-13 13:41:50,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:41:50,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256063636] [2024-11-13 13:41:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:41:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:41:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat