./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.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_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/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_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/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_ea51da50-ae1c-491f-ab1e-10d105df3443/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 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:07:43,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:07:43,262 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 14:07:43,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:07:43,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:07:43,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:07:43,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:07:43,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:07:43,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:07:43,314 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:07:43,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:07:43,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:07:43,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:07:43,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:07:43,316 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:07:43,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:07:43,317 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:07:43,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:07:43,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:43,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:07:43,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:07:43,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:07:43,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:07:43,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:07:43,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:07:43,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:07:43,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:07:43,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:07:43,322 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_ea51da50-ae1c-491f-ab1e-10d105df3443/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 -> 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 [2024-11-13 14:07:43,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:07:43,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:07:43,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:07:43,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:07:43,681 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:07:43,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c Unable to find full path for "g++" [2024-11-13 14:07:45,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:07:45,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:07:45,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2024-11-13 14:07:45,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/data/406f9ad46/cb6deefb9ae2448893924bc8fb7c2b35/FLAG9ca249d3c [2024-11-13 14:07:46,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/data/406f9ad46/cb6deefb9ae2448893924bc8fb7c2b35 [2024-11-13 14:07:46,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:07:46,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:07:46,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:46,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:07:46,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:07:46,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5b5acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46, skipping insertion in model container [2024-11-13 14:07:46,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:07:46,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:46,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:07:46,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:46,376 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:07:46,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46 WrapperNode [2024-11-13 14:07:46,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:46,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:46,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:07:46,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:07:46,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,436 INFO L138 Inliner]: procedures = 17, calls = 91, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-13 14:07:46,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:46,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:07:46,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:07:46,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:07:46,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,491 INFO L175 MemorySlicer]: Split 56 memory accesses to 8 slices as follows [2, 9, 8, 12, 6, 8, 5, 6]. 21 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 3, 0, 3, 1, 2, 1, 2]. [2024-11-13 14:07:46,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:07:46,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:07:46,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:07:46,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:07:46,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (1/1) ... [2024-11-13 14:07:46,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:46,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:07:46,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:07:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:07:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_50_0 [2024-11-13 14:07:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_50_0 [2024-11-13 14:07:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:07:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:07:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:07:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:07:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 14:07:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 14:07:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 14:07:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 14:07:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:07:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:07:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:07:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:07:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:07:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_37_0 [2024-11-13 14:07:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_37_0 [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:07:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:07:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:07:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:07:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:07:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 14:07:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 14:07:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 14:07:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 14:07:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:07:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:07:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:07:46,787 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:07:46,790 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:07:47,406 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-13 14:07:47,406 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:07:47,433 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:07:47,436 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:07:47,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:47 BoogieIcfgContainer [2024-11-13 14:07:47,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:07:47,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:07:47,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:07:47,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:07:47,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:07:46" (1/3) ... [2024-11-13 14:07:47,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b8bdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:47, skipping insertion in model container [2024-11-13 14:07:47,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:46" (2/3) ... [2024-11-13 14:07:47,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b8bdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:47, skipping insertion in model container [2024-11-13 14:07:47,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:47" (3/3) ... [2024-11-13 14:07:47,452 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard2.c [2024-11-13 14:07:47,476 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:07:47,478 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_hard2.c that has 4 procedures, 89 locations, 1 initial locations, 0 loop locations, and 24 error locations. [2024-11-13 14:07:47,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:07:47,598 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;@245a7efe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:07:47,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-13 14:07:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 50 states have (on average 1.6) internal successors, (80), 76 states have internal predecessors, (80), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:07:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:07:47,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:47,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:47,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:07:47,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash 772551977, now seen corresponding path program 1 times [2024-11-13 14:07:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942623510] [2024-11-13 14:07:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:48,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:07:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:48,052 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 14:07:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:48,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942623510] [2024-11-13 14:07:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942623510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:48,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867436543] [2024-11-13 14:07:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:48,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:48,096 INFO L87 Difference]: Start difference. First operand has 89 states, 50 states have (on average 1.6) internal successors, (80), 76 states have internal predecessors, (80), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:07:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:48,304 INFO L93 Difference]: Finished difference Result 178 states and 216 transitions. [2024-11-13 14:07:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:48,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-13 14:07:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:48,316 INFO L225 Difference]: With dead ends: 178 [2024-11-13 14:07:48,316 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 14:07:48,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:48,324 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 41 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:48,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 109 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:07:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 14:07:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-13 14:07:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 69 states have internal predecessors, (70), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 14:07:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-11-13 14:07:48,382 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 11 [2024-11-13 14:07:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:48,384 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-11-13 14:07:48,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:07:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-11-13 14:07:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:07:48,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:48,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:48,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:07:48,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_37_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:07:48,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1242848448, now seen corresponding path program 1 times [2024-11-13 14:07:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:48,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889036338] [2024-11-13 14:07:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:07:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338836015] [2024-11-13 14:07:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:48,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:48,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:48,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:07:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:48,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:07:48,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:48,822 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 14:07:48,840 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 14:07:49,271 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 14:07:49,302 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 14:07:49,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:07:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889036338] [2024-11-13 14:07:49,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:07:49,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338836015] [2024-11-13 14:07:49,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338836015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:49,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:49,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:07:49,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635835474] [2024-11-13 14:07:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:49,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:07:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:07:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:49,310 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 14:07:53,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:07:57,700 WARN L539 Checker$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 14:07:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:57,773 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2024-11-13 14:07:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:07:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 18 [2024-11-13 14:07:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:57,776 INFO L225 Difference]: With dead ends: 146 [2024-11-13 14:07:57,776 INFO L226 Difference]: Without dead ends: 145 [2024-11-13 14:07:57,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:07:57,778 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 90 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:57,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 342 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 14:07:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-13 14:07:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 113. [2024-11-13 14:07:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 93 states have internal predecessors, (103), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 14:07:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2024-11-13 14:07:57,805 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 18 [2024-11-13 14:07:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:57,805 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2024-11-13 14:07:57,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 14:07:57,806 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2024-11-13 14:07:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:07:57,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:57,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:57,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:07:58,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:58,008 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:07:58,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 126403868, now seen corresponding path program 1 times [2024-11-13 14:07:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145031822] [2024-11-13 14:07:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:07:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571119887] [2024-11-13 14:07:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:58,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:58,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:58,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:58,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:07:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:58,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 14:07:58,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:58,258 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 14:07:58,266 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 14:07:58,613 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 14:07:58,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:07:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145031822] [2024-11-13 14:07:58,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:07:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571119887] [2024-11-13 14:07:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571119887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:58,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:07:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191245542] [2024-11-13 14:07:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:58,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:07:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:07:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:58,616 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 14:07:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:58,977 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2024-11-13 14:07:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:07:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 19 [2024-11-13 14:07:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:58,980 INFO L225 Difference]: With dead ends: 145 [2024-11-13 14:07:58,980 INFO L226 Difference]: Without dead ends: 144 [2024-11-13 14:07:58,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:07:58,981 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 86 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:58,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 328 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:07:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-13 14:07:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2024-11-13 14:07:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 68 states have (on average 1.5) internal successors, (102), 93 states have internal predecessors, (102), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 14:07:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2024-11-13 14:07:59,009 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 19 [2024-11-13 14:07:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:59,010 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2024-11-13 14:07:59,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 14:07:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2024-11-13 14:07:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 14:07:59,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:59,011 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] [2024-11-13 14:07:59,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:07:59,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:59,212 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_37_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:07:59,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1005098156, now seen corresponding path program 1 times [2024-11-13 14:07:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:59,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966162226] [2024-11-13 14:07:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:07:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:07:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:07:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,991 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 14:07:59,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966162226] [2024-11-13 14:07:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966162226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:59,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254221617] [2024-11-13 14:07:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:59,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:07:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:59,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:07:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:59,996 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 14:08:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:00,223 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2024-11-13 14:08:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 27 [2024-11-13 14:08:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:00,227 INFO L225 Difference]: With dead ends: 117 [2024-11-13 14:08:00,227 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 14:08:00,227 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 14:08:00,230 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 16 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:00,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 364 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:08:00,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 14:08:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-13 14:08:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 95 states have internal predecessors, (104), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 14:08:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2024-11-13 14:08:00,265 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 27 [2024-11-13 14:08:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:00,265 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2024-11-13 14:08:00,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 14:08:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2024-11-13 14:08:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:08:00,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:00,267 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] [2024-11-13 14:08:00,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:08:00,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_37_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:00,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -468310418, now seen corresponding path program 1 times [2024-11-13 14:08:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086517681] [2024-11-13 14:08:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:00,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:08:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:00,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:08:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:00,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:08:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:00,692 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 14:08:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086517681] [2024-11-13 14:08:00,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086517681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:00,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:00,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:00,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10809199] [2024-11-13 14:08:00,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:00,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:08:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:08:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:00,697 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:00,885 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2024-11-13 14:08:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:00,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-13 14:08:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:00,887 INFO L225 Difference]: With dead ends: 119 [2024-11-13 14:08:00,888 INFO L226 Difference]: Without dead ends: 117 [2024-11-13 14:08:00,889 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 14:08:00,890 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 18 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:00,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 372 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:08:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-13 14:08:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-13 14:08:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 97 states have internal predecessors, (106), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-13 14:08:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2024-11-13 14:08:00,924 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 29 [2024-11-13 14:08:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:00,925 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2024-11-13 14:08:00,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2024-11-13 14:08:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:08:00,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:00,929 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] [2024-11-13 14:08:00,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:08:00,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:00,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1899176057, now seen corresponding path program 1 times [2024-11-13 14:08:00,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:00,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632059581] [2024-11-13 14:08:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:08:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925713062] [2024-11-13 14:08:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:00,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:00,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:00,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:08:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:01,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 14:08:01,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:01,195 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 14:08:01,204 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 14:08:01,647 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 14:08:01,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632059581] [2024-11-13 14:08:01,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:08:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925713062] [2024-11-13 14:08:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925713062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:01,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:01,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86900486] [2024-11-13 14:08:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:01,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:08:01,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:08:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:08:01,652 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:02,014 INFO L93 Difference]: Finished difference Result 174 states and 203 transitions. [2024-11-13 14:08:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:08:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-13 14:08:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:02,018 INFO L225 Difference]: With dead ends: 174 [2024-11-13 14:08:02,018 INFO L226 Difference]: Without dead ends: 173 [2024-11-13 14:08:02,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:08:02,019 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 100 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:02,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 333 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:08:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-13 14:08:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2024-11-13 14:08:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.4731182795698925) internal successors, (137), 119 states have internal predecessors, (137), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-13 14:08:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 180 transitions. [2024-11-13 14:08:02,069 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 180 transitions. Word has length 32 [2024-11-13 14:08:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:02,072 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 180 transitions. [2024-11-13 14:08:02,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 180 transitions. [2024-11-13 14:08:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:08:02,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:02,074 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] [2024-11-13 14:08:02,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:08:02,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:08:02,274 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:02,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:02,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1255084414, now seen corresponding path program 1 times [2024-11-13 14:08:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608120049] [2024-11-13 14:08:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:02,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:08:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082281436] [2024-11-13 14:08:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:02,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:02,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:02,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:08:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:02,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 14:08:02,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:02,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:08:02,530 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 14:08:02,899 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 14:08:02,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:02,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608120049] [2024-11-13 14:08:02,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:08:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082281436] [2024-11-13 14:08:02,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082281436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:02,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:02,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:02,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168606165] [2024-11-13 14:08:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:02,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:08:02,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:08:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:08:02,906 INFO L87 Difference]: Start difference. First operand 144 states and 180 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:03,269 INFO L93 Difference]: Finished difference Result 173 states and 201 transitions. [2024-11-13 14:08:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:08:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-13 14:08:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:03,271 INFO L225 Difference]: With dead ends: 173 [2024-11-13 14:08:03,271 INFO L226 Difference]: Without dead ends: 172 [2024-11-13 14:08:03,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:08:03,272 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 96 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:03,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 338 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:08:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-13 14:08:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2024-11-13 14:08:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 119 states have internal predecessors, (135), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-13 14:08:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 178 transitions. [2024-11-13 14:08:03,312 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 178 transitions. Word has length 33 [2024-11-13 14:08:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:03,313 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 178 transitions. [2024-11-13 14:08:03,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 178 transitions. [2024-11-13 14:08:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:08:03,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:03,316 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] [2024-11-13 14:08:03,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:08:03,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:08:03,517 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_40_to_50_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:03,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 252911209, now seen corresponding path program 1 times [2024-11-13 14:08:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:03,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154948660] [2024-11-13 14:08:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:08:03,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555806602] [2024-11-13 14:08:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:03,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:03,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:03,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:08:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:03,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 14:08:03,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:03,784 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 14:08:03,817 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 14:08:04,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 14:08:04,243 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 14:08:04,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:04,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154948660] [2024-11-13 14:08:04,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:08:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555806602] [2024-11-13 14:08:04,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555806602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:04,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:04,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:08:04,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042304375] [2024-11-13 14:08:04,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:04,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:08:04,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:08:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:08:04,247 INFO L87 Difference]: Start difference. First operand 144 states and 178 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:08,610 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 14:08:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:08,798 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2024-11-13 14:08:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:08:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-13 14:08:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:08,801 INFO L225 Difference]: With dead ends: 168 [2024-11-13 14:08:08,801 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 14:08:08,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:08:08,803 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 88 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:08,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 411 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 14:08:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 14:08:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144. [2024-11-13 14:08:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 119 states have internal predecessors, (133), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-13 14:08:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2024-11-13 14:08:08,854 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 34 [2024-11-13 14:08:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:08,854 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2024-11-13 14:08:08,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2024-11-13 14:08:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:08:08,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:08,858 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] [2024-11-13 14:08:08,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:09,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:08:09,060 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_40_to_50_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:09,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash -749687072, now seen corresponding path program 1 times [2024-11-13 14:08:09,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:09,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444219379] [2024-11-13 14:08:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:10,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:08:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:10,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:08:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:10,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:08:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:10,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:08:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:10,535 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 14:08:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444219379] [2024-11-13 14:08:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444219379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:10,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:10,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:08:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861366544] [2024-11-13 14:08:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:10,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:08:10,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:08:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:08:10,541 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:11,576 INFO L93 Difference]: Finished difference Result 191 states and 229 transitions. [2024-11-13 14:08:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:08:11,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-13 14:08:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:11,582 INFO L225 Difference]: With dead ends: 191 [2024-11-13 14:08:11,583 INFO L226 Difference]: Without dead ends: 190 [2024-11-13 14:08:11,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:08:11,585 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 134 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:11,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 481 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:08:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-13 14:08:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2024-11-13 14:08:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.415929203539823) internal successors, (160), 140 states have internal predecessors, (160), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-13 14:08:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 215 transitions. [2024-11-13 14:08:11,656 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 215 transitions. Word has length 35 [2024-11-13 14:08:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:11,657 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 215 transitions. [2024-11-13 14:08:11,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:08:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 215 transitions. [2024-11-13 14:08:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:08:11,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:11,659 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] [2024-11-13 14:08:11,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:08:11,660 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_40_to_50_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:11,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1515743234, now seen corresponding path program 1 times [2024-11-13 14:08:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:11,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617150766] [2024-11-13 14:08:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:08:11,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941662183] [2024-11-13 14:08:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:11,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:11,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:11,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:08:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:11,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 14:08:11,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:11,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:08:11,941 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 14:08:12,363 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 14:08:12,397 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 14:08:12,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617150766] [2024-11-13 14:08:12,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:08:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941662183] [2024-11-13 14:08:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941662183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:12,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:08:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724956498] [2024-11-13 14:08:12,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:12,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:08:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:08:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:08:12,400 INFO L87 Difference]: Start difference. First operand 171 states and 215 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:08:16,674 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 14:08:20,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:08:24,923 WARN L539 Checker$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 14:08:28,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:08:33,004 WARN L539 Checker$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 14:08:37,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:08:41,064 WARN L539 Checker$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 14:08:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:41,087 INFO L93 Difference]: Finished difference Result 190 states and 231 transitions. [2024-11-13 14:08:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:08:41,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2024-11-13 14:08:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:41,090 INFO L225 Difference]: With dead ends: 190 [2024-11-13 14:08:41,090 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 14:08:41,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:08:41,091 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 170 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:41,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 300 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 156 Invalid, 7 Unknown, 0 Unchecked, 28.5s Time] [2024-11-13 14:08:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 14:08:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2024-11-13 14:08:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.407079646017699) internal successors, (159), 140 states have internal predecessors, (159), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-13 14:08:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 214 transitions. [2024-11-13 14:08:41,135 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 214 transitions. Word has length 42 [2024-11-13 14:08:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:41,136 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 214 transitions. [2024-11-13 14:08:41,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:08:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 214 transitions. [2024-11-13 14:08:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:08:41,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:41,137 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] [2024-11-13 14:08:41,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:41,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:08:41,342 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_40_to_50_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:41,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 256600049, now seen corresponding path program 1 times [2024-11-13 14:08:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645175494] [2024-11-13 14:08:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:41,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:08:41,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650819194] [2024-11-13 14:08:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:41,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:41,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:41,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:08:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:41,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 14:08:41,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:41,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:08:41,641 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 14:08:42,052 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 14:08:42,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:42,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:42,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645175494] [2024-11-13 14:08:42,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:08:42,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650819194] [2024-11-13 14:08:42,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650819194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:42,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:42,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:08:42,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488408229] [2024-11-13 14:08:42,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:42,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:08:42,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:08:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:08:42,054 INFO L87 Difference]: Start difference. First operand 171 states and 214 transitions. Second operand has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:08:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:42,668 INFO L93 Difference]: Finished difference Result 189 states and 230 transitions. [2024-11-13 14:08:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:08:42,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2024-11-13 14:08:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:42,671 INFO L225 Difference]: With dead ends: 189 [2024-11-13 14:08:42,671 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 14:08:42,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:08:42,672 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 216 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:42,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 335 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:08:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 14:08:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 171. [2024-11-13 14:08:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 140 states have internal predecessors, (158), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-13 14:08:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2024-11-13 14:08:42,706 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 43 [2024-11-13 14:08:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:42,706 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2024-11-13 14:08:42,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:08:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2024-11-13 14:08:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:08:42,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:42,708 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:42,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:08:42,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:42,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_30_to_37_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:08:42,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1768960708, now seen corresponding path program 1 times [2024-11-13 14:08:42,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:42,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543209932] [2024-11-13 14:08:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:08:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558145773] [2024-11-13 14:08:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:42,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:42,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:42,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:08:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:43,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 14:08:43,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:43,181 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 14:08:43,186 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 14:08:43,585 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 14:08:43,847 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 14:08:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:08:43,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:44,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:44,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543209932] [2024-11-13 14:08:44,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:08:44,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558145773] [2024-11-13 14:08:44,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558145773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:44,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:08:44,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:08:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105732774] [2024-11-13 14:08:44,088 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:44,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:08:44,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:08:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:08:44,089 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 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 14:08:48,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:08:52,261 WARN L539 Checker$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 14:08:56,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:00,577 WARN L539 Checker$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 14:09:04,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:08,819 WARN L539 Checker$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 14:09:12,832 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 14:09:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:12,886 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2024-11-13 14:09:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:09:12,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 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 46 [2024-11-13 14:09:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:12,889 INFO L225 Difference]: With dead ends: 230 [2024-11-13 14:09:12,889 INFO L226 Difference]: Without dead ends: 228 [2024-11-13 14:09:12,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:09:12,890 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 138 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 26 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:12,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 585 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 28.6s Time] [2024-11-13 14:09:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-13 14:09:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 188. [2024-11-13 14:09:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 128 states have (on average 1.3671875) internal successors, (175), 153 states have internal predecessors, (175), 23 states have call successors, (23), 11 states have call predecessors, (23), 15 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-13 14:09:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2024-11-13 14:09:12,942 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 46 [2024-11-13 14:09:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:12,944 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2024-11-13 14:09:12,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 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 14:09:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2024-11-13 14:09:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:09:12,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:12,946 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:12,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:09:13,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:13,147 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:13,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash 996792992, now seen corresponding path program 1 times [2024-11-13 14:09:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:13,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975801801] [2024-11-13 14:09:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:09:13,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079976828] [2024-11-13 14:09:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:13,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:13,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:13,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:09:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:13,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 14:09:13,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:13,397 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 14:09:13,406 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 14:09:13,796 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 14:09:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:09:14,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:14,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975801801] [2024-11-13 14:09:14,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:09:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079976828] [2024-11-13 14:09:14,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079976828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:14,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:09:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:09:14,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353861748] [2024-11-13 14:09:14,601 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:14,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:09:14,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:09:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:09:14,602 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 3 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 14:09:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:15,468 INFO L93 Difference]: Finished difference Result 269 states and 322 transitions. [2024-11-13 14:09:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:09:15,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 3 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 47 [2024-11-13 14:09:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:15,471 INFO L225 Difference]: With dead ends: 269 [2024-11-13 14:09:15,471 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 14:09:15,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:09:15,472 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 131 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:15,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 657 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:09:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 14:09:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 224. [2024-11-13 14:09:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 153 states have (on average 1.3398692810457515) internal successors, (205), 179 states have internal predecessors, (205), 30 states have call successors, (30), 14 states have call predecessors, (30), 19 states have return successors, (47), 30 states have call predecessors, (47), 30 states have call successors, (47) [2024-11-13 14:09:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 282 transitions. [2024-11-13 14:09:15,521 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 282 transitions. Word has length 47 [2024-11-13 14:09:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:15,521 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 282 transitions. [2024-11-13 14:09:15,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 3 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 14:09:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 282 transitions. [2024-11-13 14:09:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 14:09:15,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:15,523 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] [2024-11-13 14:09:15,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:09:15,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:15,726 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_40_to_50_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:15,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash -842278396, now seen corresponding path program 1 times [2024-11-13 14:09:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667097571] [2024-11-13 14:09:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:15,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:09:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:09:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:09:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:09:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:09:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-13 14:09:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,095 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 14:09:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:16,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667097571] [2024-11-13 14:09:16,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667097571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:09:16,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:09:16,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:09:16,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790313481] [2024-11-13 14:09:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:09:16,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:09:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:09:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:09:16,098 INFO L87 Difference]: Start difference. First operand 224 states and 282 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:09:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:16,421 INFO L93 Difference]: Finished difference Result 293 states and 350 transitions. [2024-11-13 14:09:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:09:16,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2024-11-13 14:09:16,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:16,424 INFO L225 Difference]: With dead ends: 293 [2024-11-13 14:09:16,424 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 14:09:16,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:09:16,425 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 123 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:16,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 313 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:09:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 14:09:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2024-11-13 14:09:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 135 states have (on average 1.3185185185185184) internal successors, (178), 160 states have internal predecessors, (178), 27 states have call successors, (27), 13 states have call predecessors, (27), 17 states have return successors, (38), 27 states have call predecessors, (38), 27 states have call successors, (38) [2024-11-13 14:09:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 243 transitions. [2024-11-13 14:09:16,461 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 243 transitions. Word has length 51 [2024-11-13 14:09:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:16,461 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 243 transitions. [2024-11-13 14:09:16,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:09:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 243 transitions. [2024-11-13 14:09:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:09:16,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:16,462 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] [2024-11-13 14:09:16,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:09:16,462 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:16,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1116771322, now seen corresponding path program 1 times [2024-11-13 14:09:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:16,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548880879] [2024-11-13 14:09:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:09:16,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586148958] [2024-11-13 14:09:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:16,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:16,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:16,496 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:16,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:09:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:16,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:09:16,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:16,695 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 14:09:16,702 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 14:09:16,999 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 14:09:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:09:17,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:17,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548880879] [2024-11-13 14:09:17,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:09:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586148958] [2024-11-13 14:09:17,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586148958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:17,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:09:17,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-13 14:09:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892523923] [2024-11-13 14:09:17,197 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:17,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:09:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:17,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:09:17,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:09:17,198 INFO L87 Difference]: Start difference. First operand 201 states and 243 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:09:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:17,777 INFO L93 Difference]: Finished difference Result 231 states and 267 transitions. [2024-11-13 14:09:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:09:17,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2024-11-13 14:09:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:17,780 INFO L225 Difference]: With dead ends: 231 [2024-11-13 14:09:17,780 INFO L226 Difference]: Without dead ends: 230 [2024-11-13 14:09:17,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:09:17,784 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 133 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:17,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 185 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:09:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-13 14:09:17,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 203. [2024-11-13 14:09:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 137 states have (on average 1.313868613138686) internal successors, (180), 161 states have internal predecessors, (180), 27 states have call successors, (27), 13 states have call predecessors, (27), 17 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2024-11-13 14:09:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 245 transitions. [2024-11-13 14:09:17,852 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 245 transitions. Word has length 54 [2024-11-13 14:09:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:17,854 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 245 transitions. [2024-11-13 14:09:17,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:09:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 245 transitions. [2024-11-13 14:09:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:09:17,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:17,855 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:17,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:09:18,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:18,056 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_37_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:18,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash 254666288, now seen corresponding path program 1 times [2024-11-13 14:09:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298029417] [2024-11-13 14:09:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:09:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:09:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:09:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:09:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:09:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 14:09:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 14:09:18,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:18,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298029417] [2024-11-13 14:09:18,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298029417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:18,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442129082] [2024-11-13 14:09:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:18,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:18,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:18,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:18,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:09:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:18,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:09:18,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:18,828 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 14:09:19,217 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 28 treesize of output 16 [2024-11-13 14:09:20,050 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 14:09:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:09:20,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 14:09:20,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442129082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:09:20,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:09:20,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 23 [2024-11-13 14:09:20,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97643513] [2024-11-13 14:09:20,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:20,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:09:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:09:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:09:20,373 INFO L87 Difference]: Start difference. First operand 203 states and 245 transitions. Second operand has 24 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-13 14:09:24,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:29,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:33,172 WARN L539 Checker$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 14:09:37,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:41,211 WARN L539 Checker$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 14:09:45,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:49,308 WARN L539 Checker$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 14:09:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:49,325 INFO L93 Difference]: Finished difference Result 227 states and 265 transitions. [2024-11-13 14:09:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:09:49,326 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 55 [2024-11-13 14:09:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:49,328 INFO L225 Difference]: With dead ends: 227 [2024-11-13 14:09:49,328 INFO L226 Difference]: Without dead ends: 226 [2024-11-13 14:09:49,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 97 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:09:49,330 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 150 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:49,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1129 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 514 Invalid, 7 Unknown, 0 Unchecked, 28.7s Time] [2024-11-13 14:09:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-13 14:09:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2024-11-13 14:09:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 138 states have (on average 1.3043478260869565) internal successors, (180), 161 states have internal predecessors, (180), 27 states have call successors, (27), 13 states have call predecessors, (27), 18 states have return successors, (40), 29 states have call predecessors, (40), 27 states have call successors, (40) [2024-11-13 14:09:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 247 transitions. [2024-11-13 14:09:49,388 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 247 transitions. Word has length 55 [2024-11-13 14:09:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:49,388 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 247 transitions. [2024-11-13 14:09:49,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-13 14:09:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 247 transitions. [2024-11-13 14:09:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:09:49,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:49,392 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] [2024-11-13 14:09:49,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:09:49,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:09:49,595 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:49,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash -260172493, now seen corresponding path program 1 times [2024-11-13 14:09:49,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:49,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770135763] [2024-11-13 14:09:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:09:49,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260447543] [2024-11-13 14:09:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:49,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:49,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:49,636 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:49,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:09:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:49,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:09:49,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:49,856 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 14:09:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:09:50,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:53,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:53,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770135763] [2024-11-13 14:09:53,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:09:53,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260447543] [2024-11-13 14:09:53,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260447543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:53,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:09:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-13 14:09:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755387072] [2024-11-13 14:09:53,101 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:53,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:09:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:09:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:09:53,102 INFO L87 Difference]: Start difference. First operand 204 states and 247 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:09:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:53,473 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2024-11-13 14:09:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:09:53,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2024-11-13 14:09:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:53,475 INFO L225 Difference]: With dead ends: 231 [2024-11-13 14:09:53,475 INFO L226 Difference]: Without dead ends: 229 [2024-11-13 14:09:53,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:09:53,476 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 117 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:53,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 169 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:09:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-13 14:09:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 206. [2024-11-13 14:09:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 139 states have (on average 1.3021582733812949) internal successors, (181), 163 states have internal predecessors, (181), 28 states have call successors, (28), 13 states have call predecessors, (28), 18 states have return successors, (42), 30 states have call predecessors, (42), 28 states have call successors, (42) [2024-11-13 14:09:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 251 transitions. [2024-11-13 14:09:53,529 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 251 transitions. Word has length 55 [2024-11-13 14:09:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:53,529 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 251 transitions. [2024-11-13 14:09:53,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:09:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 251 transitions. [2024-11-13 14:09:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:09:53,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:53,531 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:53,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:09:53,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:53,731 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_30_to_37_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:53,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash -695279562, now seen corresponding path program 1 times [2024-11-13 14:09:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:53,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673819087] [2024-11-13 14:09:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:09:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:09:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:09:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:09:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:09:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 14:09:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 14:09:54,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:54,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673819087] [2024-11-13 14:09:54,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673819087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:54,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241058084] [2024-11-13 14:09:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:54,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:54,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:54,279 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:54,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:09:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:54,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:09:54,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:54,526 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 14:09:54,932 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 28 treesize of output 16 [2024-11-13 14:09:55,653 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 26 treesize of output 14 [2024-11-13 14:09:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:09:55,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 14:09:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241058084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:09:55,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:09:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 23 [2024-11-13 14:09:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238801694] [2024-11-13 14:09:55,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:55,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:09:55,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:55,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:09:55,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:09:55,982 INFO L87 Difference]: Start difference. First operand 206 states and 251 transitions. Second operand has 24 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-13 14:09:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:57,392 INFO L93 Difference]: Finished difference Result 274 states and 326 transitions. [2024-11-13 14:09:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:09:57,393 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 56 [2024-11-13 14:09:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:57,395 INFO L225 Difference]: With dead ends: 274 [2024-11-13 14:09:57,395 INFO L226 Difference]: Without dead ends: 273 [2024-11-13 14:09:57,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 99 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:09:57,397 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 166 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:57,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1213 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:09:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-13 14:09:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 248. [2024-11-13 14:09:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 169 states have (on average 1.2840236686390532) internal successors, (217), 195 states have internal predecessors, (217), 36 states have call successors, (36), 15 states have call predecessors, (36), 22 states have return successors, (54), 38 states have call predecessors, (54), 36 states have call successors, (54) [2024-11-13 14:09:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 307 transitions. [2024-11-13 14:09:57,468 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 307 transitions. Word has length 56 [2024-11-13 14:09:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:57,468 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 307 transitions. [2024-11-13 14:09:57,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-13 14:09:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 307 transitions. [2024-11-13 14:09:57,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:09:57,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:57,470 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] [2024-11-13 14:09:57,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:09:57,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:09:57,674 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:09:57,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:57,674 INFO L85 PathProgramCache]: Analyzing trace with hash 524587432, now seen corresponding path program 1 times [2024-11-13 14:09:57,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:57,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553261773] [2024-11-13 14:09:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:57,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:09:57,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239151893] [2024-11-13 14:09:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:57,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:57,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:57,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:09:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:57,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:09:57,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:57,964 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 14:09:57,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:09:57,987 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 11 treesize of output 7 [2024-11-13 14:09:58,566 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 14:09:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:09:58,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:59,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553261773] [2024-11-13 14:09:59,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:09:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239151893] [2024-11-13 14:09:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239151893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:59,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:09:59,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-13 14:09:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066111696] [2024-11-13 14:09:59,031 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:59,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:09:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:09:59,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:09:59,032 INFO L87 Difference]: Start difference. First operand 248 states and 307 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:10:03,723 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 14:10:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:03,989 INFO L93 Difference]: Finished difference Result 271 states and 323 transitions. [2024-11-13 14:10:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:10:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2024-11-13 14:10:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:03,993 INFO L225 Difference]: With dead ends: 271 [2024-11-13 14:10:03,993 INFO L226 Difference]: Without dead ends: 270 [2024-11-13 14:10:03,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:10:03,994 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 94 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:03,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 240 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 256 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 14:10:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-13 14:10:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 252. [2024-11-13 14:10:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 173 states have (on average 1.277456647398844) internal successors, (221), 198 states have internal predecessors, (221), 36 states have call successors, (36), 15 states have call predecessors, (36), 22 states have return successors, (54), 39 states have call predecessors, (54), 36 states have call successors, (54) [2024-11-13 14:10:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 311 transitions. [2024-11-13 14:10:04,086 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 311 transitions. Word has length 56 [2024-11-13 14:10:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:04,086 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 311 transitions. [2024-11-13 14:10:04,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:10:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 311 transitions. [2024-11-13 14:10:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:10:04,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:04,087 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] [2024-11-13 14:10:04,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:10:04,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:04,288 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:10:04,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash -917658667, now seen corresponding path program 1 times [2024-11-13 14:10:04,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:04,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703663872] [2024-11-13 14:10:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:04,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:04,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:10:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:10:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:10:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:10:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 14:10:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 14:10:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:10:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:05,333 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 14:10:05,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:05,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703663872] [2024-11-13 14:10:05,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703663872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:05,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:05,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 14:10:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345728742] [2024-11-13 14:10:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:05,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:10:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:10:05,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:10:05,336 INFO L87 Difference]: Start difference. First operand 252 states and 311 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 14:10:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:06,618 INFO L93 Difference]: Finished difference Result 256 states and 315 transitions. [2024-11-13 14:10:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:10:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2024-11-13 14:10:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:06,622 INFO L225 Difference]: With dead ends: 256 [2024-11-13 14:10:06,622 INFO L226 Difference]: Without dead ends: 232 [2024-11-13 14:10:06,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:10:06,623 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 122 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:06,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 288 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:10:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-13 14:10:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2024-11-13 14:10:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 156 states have (on average 1.3012820512820513) internal successors, (203), 181 states have internal predecessors, (203), 33 states have call successors, (33), 14 states have call predecessors, (33), 20 states have return successors, (50), 35 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-13 14:10:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 286 transitions. [2024-11-13 14:10:06,708 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 286 transitions. Word has length 57 [2024-11-13 14:10:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:06,708 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 286 transitions. [2024-11-13 14:10:06,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 14:10:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 286 transitions. [2024-11-13 14:10:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 14:10:06,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:06,709 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:06,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:10:06,710 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_30_to_37_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:10:06,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1851242424, now seen corresponding path program 1 times [2024-11-13 14:10:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:06,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033126210] [2024-11-13 14:10:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:06,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:10:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:10:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:10:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:10:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:10:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 14:10:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 14:10:07,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:07,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033126210] [2024-11-13 14:10:07,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033126210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:07,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426156951] [2024-11-13 14:10:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:07,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:07,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:07,205 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:07,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:10:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:07,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 14:10:07,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:07,443 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 14:10:07,850 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 14:10:08,059 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 14:10:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:10:08,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 14:10:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426156951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:08,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 21 [2024-11-13 14:10:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312590283] [2024-11-13 14:10:08,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:08,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:10:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:10:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:10:08,406 INFO L87 Difference]: Start difference. First operand 230 states and 286 transitions. Second operand has 22 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 8 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-13 14:10:09,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:09,151 INFO L93 Difference]: Finished difference Result 253 states and 303 transitions. [2024-11-13 14:10:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:10:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 8 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 58 [2024-11-13 14:10:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:09,153 INFO L225 Difference]: With dead ends: 253 [2024-11-13 14:10:09,153 INFO L226 Difference]: Without dead ends: 252 [2024-11-13 14:10:09,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 105 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:10:09,154 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 161 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:09,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 554 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:10:09,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-13 14:10:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2024-11-13 14:10:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 158 states have (on average 1.2848101265822784) internal successors, (203), 183 states have internal predecessors, (203), 33 states have call successors, (33), 14 states have call predecessors, (33), 20 states have return successors, (50), 35 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-13 14:10:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 286 transitions. [2024-11-13 14:10:09,220 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 286 transitions. Word has length 58 [2024-11-13 14:10:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:09,221 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 286 transitions. [2024-11-13 14:10:09,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 8 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-13 14:10:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 286 transitions. [2024-11-13 14:10:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:10:09,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:09,222 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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 14:10:09,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:10:09,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:09,424 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_40_to_50_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:10:09,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash -232515595, now seen corresponding path program 1 times [2024-11-13 14:10:09,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:09,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125280297] [2024-11-13 14:10:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:10:09,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087255900] [2024-11-13 14:10:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:09,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:09,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:09,518 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:09,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:10:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:09,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 14:10:09,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:09,851 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 14:10:09,868 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 14:10:10,439 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 14:10:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-13 14:10:10,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:10:10,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125280297] [2024-11-13 14:10:10,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:10:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087255900] [2024-11-13 14:10:10,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087255900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:10,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:10,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:10:10,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862556434] [2024-11-13 14:10:10,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:10,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:10:10,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:10:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:10:10,480 INFO L87 Difference]: Start difference. First operand 232 states and 286 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:10:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:11,026 INFO L93 Difference]: Finished difference Result 254 states and 302 transitions. [2024-11-13 14:10:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:10:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2024-11-13 14:10:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:11,029 INFO L225 Difference]: With dead ends: 254 [2024-11-13 14:10:11,029 INFO L226 Difference]: Without dead ends: 253 [2024-11-13 14:10:11,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:10:11,032 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 112 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:11,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 316 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:10:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-13 14:10:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 232. [2024-11-13 14:10:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 183 states have internal predecessors, (200), 33 states have call successors, (33), 14 states have call predecessors, (33), 20 states have return successors, (50), 35 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-13 14:10:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 283 transitions. [2024-11-13 14:10:11,101 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 283 transitions. Word has length 65 [2024-11-13 14:10:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:11,101 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 283 transitions. [2024-11-13 14:10:11,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:10:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 283 transitions. [2024-11-13 14:10:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 14:10:11,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:11,103 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 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 14:10:11,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 14:10:11,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:11,308 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_40_to_50_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:10:11,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1537950391, now seen corresponding path program 1 times [2024-11-13 14:10:11,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:11,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132100981] [2024-11-13 14:10:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:10:11,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550448784] [2024-11-13 14:10:11,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:11,349 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:11,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:10:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:11,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 14:10:11,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:11,634 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 14:10:11,643 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 14:10:12,308 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 14:10:20,690 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 14:10:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-13 14:10:20,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132100981] [2024-11-13 14:10:20,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:10:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550448784] [2024-11-13 14:10:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550448784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:20,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:10:20,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-13 14:10:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794311925] [2024-11-13 14:10:20,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:20,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:10:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:10:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2024-11-13 14:10:20,873 INFO L87 Difference]: Start difference. First operand 232 states and 283 transitions. Second operand has 14 states, 10 states have (on average 3.8) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 14:10:24,919 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 14:10:29,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:33,153 WARN L539 Checker$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 14:10:37,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:41,215 WARN L539 Checker$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 14:10:45,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:49,733 WARN L539 Checker$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 14:10:53,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:10:57,851 WARN L539 Checker$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 14:11:01,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:05,936 WARN L539 Checker$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 14:11:09,976 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 14:11:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:10,004 INFO L93 Difference]: Finished difference Result 255 states and 303 transitions. [2024-11-13 14:11:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:11:10,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 3.8) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 72 [2024-11-13 14:11:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:10,007 INFO L225 Difference]: With dead ends: 255 [2024-11-13 14:11:10,007 INFO L226 Difference]: Without dead ends: 254 [2024-11-13 14:11:10,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=84, Invalid=294, Unknown=2, NotChecked=0, Total=380 [2024-11-13 14:11:10,008 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 136 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 21 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:10,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 460 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 336 Invalid, 12 Unknown, 0 Unchecked, 48.9s Time] [2024-11-13 14:11:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-13 14:11:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2024-11-13 14:11:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 161 states have (on average 1.2546583850931676) internal successors, (202), 186 states have internal predecessors, (202), 33 states have call successors, (33), 15 states have call predecessors, (33), 21 states have return successors, (50), 35 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-13 14:11:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 285 transitions. [2024-11-13 14:11:10,085 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 285 transitions. Word has length 72 [2024-11-13 14:11:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:10,085 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 285 transitions. [2024-11-13 14:11:10,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 3.8) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 14:11:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 285 transitions. [2024-11-13 14:11:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 14:11:10,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:10,087 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 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 14:11:10,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 14:11:10,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:11:10,292 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_40_to_50_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:10,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -431821818, now seen corresponding path program 1 times [2024-11-13 14:11:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:10,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117435373] [2024-11-13 14:11:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:10,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:11:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994852930] [2024-11-13 14:11:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:10,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:10,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:10,382 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:10,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:11:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:10,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 14:11:10,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:10,700 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 14:11:10,708 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 14:11:11,228 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 14:11:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-13 14:11:11,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117435373] [2024-11-13 14:11:11,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:11:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994852930] [2024-11-13 14:11:11,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994852930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:11,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:11:11,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-13 14:11:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965588120] [2024-11-13 14:11:11,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:11,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:11:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:11:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:11:11,938 INFO L87 Difference]: Start difference. First operand 236 states and 285 transitions. Second operand has 14 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 14:11:13,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:13,015 INFO L93 Difference]: Finished difference Result 254 states and 302 transitions. [2024-11-13 14:11:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:11:13,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 73 [2024-11-13 14:11:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:13,018 INFO L225 Difference]: With dead ends: 254 [2024-11-13 14:11:13,018 INFO L226 Difference]: Without dead ends: 253 [2024-11-13 14:11:13,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:11:13,020 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 177 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:13,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 508 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:11:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-13 14:11:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 236. [2024-11-13 14:11:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 161 states have (on average 1.2484472049689441) internal successors, (201), 186 states have internal predecessors, (201), 33 states have call successors, (33), 15 states have call predecessors, (33), 21 states have return successors, (50), 35 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-13 14:11:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 284 transitions. [2024-11-13 14:11:13,106 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 284 transitions. Word has length 73 [2024-11-13 14:11:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:13,109 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 284 transitions. [2024-11-13 14:11:13,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 14:11:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 284 transitions. [2024-11-13 14:11:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 14:11:13,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:13,110 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:11:13,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 14:11:13,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:11:13,311 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:13,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1631895004, now seen corresponding path program 2 times [2024-11-13 14:11:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:13,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074191991] [2024-11-13 14:11:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:13,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:11:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388883040] [2024-11-13 14:11:13,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:11:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:13,366 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:13,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:11:13,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:11:13,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:13,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-13 14:11:13,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:13,665 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 14:11:13,672 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 14:11:14,048 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 14:11:14,471 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 14:11:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:11:14,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074191991] [2024-11-13 14:11:15,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:11:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388883040] [2024-11-13 14:11:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388883040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:15,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:11:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-13 14:11:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685510989] [2024-11-13 14:11:15,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:15,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:11:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:11:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:11:15,367 INFO L87 Difference]: Start difference. First operand 236 states and 284 transitions. Second operand has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 14:11:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:16,630 INFO L93 Difference]: Finished difference Result 291 states and 340 transitions. [2024-11-13 14:11:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:11:16,631 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-13 14:11:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:16,633 INFO L225 Difference]: With dead ends: 291 [2024-11-13 14:11:16,633 INFO L226 Difference]: Without dead ends: 290 [2024-11-13 14:11:16,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:11:16,634 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 135 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:16,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 916 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:11:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-13 14:11:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 258. [2024-11-13 14:11:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 177 states have (on average 1.2372881355932204) internal successors, (219), 202 states have internal predecessors, (219), 36 states have call successors, (36), 17 states have call predecessors, (36), 24 states have return successors, (56), 39 states have call predecessors, (56), 36 states have call successors, (56) [2024-11-13 14:11:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 311 transitions. [2024-11-13 14:11:16,737 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 311 transitions. Word has length 75 [2024-11-13 14:11:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:16,737 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 311 transitions. [2024-11-13 14:11:16,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 14:11:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 311 transitions. [2024-11-13 14:11:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:11:16,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:16,740 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-11-13 14:11:16,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:11:16,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 14:11:16,940 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_40_to_50_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:16,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash 815560985, now seen corresponding path program 1 times [2024-11-13 14:11:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329907771] [2024-11-13 14:11:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:17,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:11:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:11:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:11:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 14:11:18,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:18,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329907771] [2024-11-13 14:11:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329907771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:18,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820192844] [2024-11-13 14:11:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:18,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:18,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:18,412 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:18,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:11:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:18,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:11:18,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:19,242 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 14:11:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-13 14:11:19,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:11:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820192844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:11:19,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:11:19,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-11-13 14:11:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208092793] [2024-11-13 14:11:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:11:19,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:11:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:11:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:11:19,505 INFO L87 Difference]: Start difference. First operand 258 states and 311 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:11:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:20,847 INFO L93 Difference]: Finished difference Result 260 states and 314 transitions. [2024-11-13 14:11:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:11:20,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2024-11-13 14:11:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:20,850 INFO L225 Difference]: With dead ends: 260 [2024-11-13 14:11:20,850 INFO L226 Difference]: Without dead ends: 259 [2024-11-13 14:11:20,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:11:20,851 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:20,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 421 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:11:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-13 14:11:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2024-11-13 14:11:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 177 states have (on average 1.2259887005649717) internal successors, (217), 201 states have internal predecessors, (217), 36 states have call successors, (36), 17 states have call predecessors, (36), 24 states have return successors, (56), 39 states have call predecessors, (56), 36 states have call successors, (56) [2024-11-13 14:11:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2024-11-13 14:11:20,949 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 81 [2024-11-13 14:11:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:20,949 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2024-11-13 14:11:20,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:11:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2024-11-13 14:11:20,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 14:11:20,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:20,953 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-11-13 14:11:20,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:11:21,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:11:21,153 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_40_to_50_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:21,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash -487413184, now seen corresponding path program 1 times [2024-11-13 14:11:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717006459] [2024-11-13 14:11:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:21,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:21,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:11:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:11:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:11:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-13 14:11:22,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:22,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717006459] [2024-11-13 14:11:22,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717006459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541379093] [2024-11-13 14:11:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:22,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:22,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:22,438 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:22,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:11:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:22,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:11:22,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:26,524 WARN L873 $PredicateComparison]: unable to prove that (exists ((|func_to_recursive_line_40_to_50_0_#t~mem8| Int) (|func_to_recursive_line_40_to_50_0_#t~mem9| Int)) (let ((.cse0 (* |func_to_recursive_line_40_to_50_0_#t~mem9| |func_to_recursive_line_40_to_50_0_#t~mem8|))) (and (<= (select (select |c_#memory_int#3| c_func_to_recursive_line_40_to_50_0_~d.base) c_func_to_recursive_line_40_to_50_0_~d.offset) .cse0) (<= .cse0 2147483647)))) is different from true [2024-11-13 14:11:26,553 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 17 treesize of output 9 [2024-11-13 14:11:29,732 WARN L873 $PredicateComparison]: unable to prove that (exists ((|func_to_recursive_line_40_to_50_0_#t~mem8| Int) (|func_to_recursive_line_40_to_50_0_#t~mem9| Int)) (let ((.cse0 (* |func_to_recursive_line_40_to_50_0_#t~mem9| |func_to_recursive_line_40_to_50_0_#t~mem8|))) (and (<= |c_func_to_recursive_line_40_to_50_0_#t~mem12| .cse0) (<= .cse0 2147483647)))) is different from true [2024-11-13 14:11:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-13 14:11:29,748 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:11:29,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541379093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:11:29,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:11:29,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-11-13 14:11:29,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141077388] [2024-11-13 14:11:29,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:11:29,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:11:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:11:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=331, Unknown=2, NotChecked=74, Total=462 [2024-11-13 14:11:29,750 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:11:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:30,264 INFO L93 Difference]: Finished difference Result 257 states and 309 transitions. [2024-11-13 14:11:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:11:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2024-11-13 14:11:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:30,267 INFO L225 Difference]: With dead ends: 257 [2024-11-13 14:11:30,267 INFO L226 Difference]: Without dead ends: 256 [2024-11-13 14:11:30,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=59, Invalid=367, Unknown=2, NotChecked=78, Total=506 [2024-11-13 14:11:30,269 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 2 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:30,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 321 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 181 Unchecked, 0.3s Time] [2024-11-13 14:11:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-13 14:11:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-13 14:11:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 177 states have (on average 1.2146892655367232) internal successors, (215), 200 states have internal predecessors, (215), 36 states have call successors, (36), 17 states have call predecessors, (36), 24 states have return successors, (56), 39 states have call predecessors, (56), 36 states have call successors, (56) [2024-11-13 14:11:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 307 transitions. [2024-11-13 14:11:30,384 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 307 transitions. Word has length 82 [2024-11-13 14:11:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:30,384 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 307 transitions. [2024-11-13 14:11:30,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:11:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 307 transitions. [2024-11-13 14:11:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 14:11:30,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:30,385 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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 14:11:30,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:11:30,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 14:11:30,586 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_40_to_50_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:30,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2070060539, now seen corresponding path program 1 times [2024-11-13 14:11:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487646641] [2024-11-13 14:11:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:11:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:11:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:11:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 14:11:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487646641] [2024-11-13 14:11:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487646641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030297699] [2024-11-13 14:11:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:31,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:31,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:31,652 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:31,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:11:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:31,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:11:31,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:31,981 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 14:11:32,206 WARN L873 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_30_to_37_0_~p.offset Int)) (let ((.cse0 (select (select |c_#memory_int#1| |c_func_to_recursive_line_30_to_37_0_#in~p.base|) func_to_recursive_line_30_to_37_0_~p.offset))) (and (<= 0 (+ .cse0 2147483648)) (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |c_func_to_recursive_line_30_to_37_0_#in~p.base| (store (select |c_old(#memory_int#1)| |c_func_to_recursive_line_30_to_37_0_#in~p.base|) func_to_recursive_line_30_to_37_0_~p.offset .cse0)))))) is different from true [2024-11-13 14:11:32,319 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-13 14:11:32,319 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 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 14:11:32,886 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 13 [2024-11-13 14:11:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 2 not checked. [2024-11-13 14:11:32,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030297699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:34,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:11:34,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-11-13 14:11:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880714946] [2024-11-13 14:11:34,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:34,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:11:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:11:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=659, Unknown=1, NotChecked=52, Total=812 [2024-11-13 14:11:34,462 INFO L87 Difference]: Start difference. First operand 256 states and 307 transitions. Second operand has 23 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 10 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-13 14:11:40,054 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 14:11:44,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:48,149 WARN L539 Checker$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 14:11:52,157 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 14:11:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:52,273 INFO L93 Difference]: Finished difference Result 387 states and 459 transitions. [2024-11-13 14:11:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 14:11:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 10 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) Word has length 83 [2024-11-13 14:11:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:52,276 INFO L225 Difference]: With dead ends: 387 [2024-11-13 14:11:52,276 INFO L226 Difference]: Without dead ends: 377 [2024-11-13 14:11:52,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=353, Invalid=1812, Unknown=1, NotChecked=90, Total=2256 [2024-11-13 14:11:52,278 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 342 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 83 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:52,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 636 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 499 Invalid, 4 Unknown, 202 Unchecked, 16.8s Time] [2024-11-13 14:11:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-13 14:11:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 313. [2024-11-13 14:11:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 222 states have (on average 1.2477477477477477) internal successors, (277), 247 states have internal predecessors, (277), 43 states have call successors, (43), 21 states have call predecessors, (43), 29 states have return successors, (66), 46 states have call predecessors, (66), 43 states have call successors, (66) [2024-11-13 14:11:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 386 transitions. [2024-11-13 14:11:52,385 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 386 transitions. Word has length 83 [2024-11-13 14:11:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:52,385 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 386 transitions. [2024-11-13 14:11:52,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 10 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-13 14:11:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 386 transitions. [2024-11-13 14:11:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 14:11:52,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:52,389 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1] [2024-11-13 14:11:52,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-13 14:11:52,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 14:11:52,594 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_40_to_50_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:52,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash -252632670, now seen corresponding path program 1 times [2024-11-13 14:11:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142823924] [2024-11-13 14:11:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:11:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:11:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:11:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 14:11:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142823924] [2024-11-13 14:11:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142823924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780768988] [2024-11-13 14:11:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:53,595 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:53,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:11:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:53,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:11:53,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:53,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:11:54,216 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 14:11:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 14:11:54,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:55,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:11:55,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780768988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:55,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:11:55,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2024-11-13 14:11:55,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910004494] [2024-11-13 14:11:55,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:55,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:11:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:11:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:11:55,279 INFO L87 Difference]: Start difference. First operand 313 states and 386 transitions. Second operand has 22 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 9 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-13 14:11:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:56,376 INFO L93 Difference]: Finished difference Result 356 states and 430 transitions. [2024-11-13 14:11:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:11:56,377 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 9 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 84 [2024-11-13 14:11:56,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:56,380 INFO L225 Difference]: With dead ends: 356 [2024-11-13 14:11:56,380 INFO L226 Difference]: Without dead ends: 355 [2024-11-13 14:11:56,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:11:56,381 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 247 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:56,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 640 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:11:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-13 14:11:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 313. [2024-11-13 14:11:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 222 states have (on average 1.2387387387387387) internal successors, (275), 247 states have internal predecessors, (275), 43 states have call successors, (43), 21 states have call predecessors, (43), 29 states have return successors, (66), 46 states have call predecessors, (66), 43 states have call successors, (66) [2024-11-13 14:11:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2024-11-13 14:11:56,491 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 84 [2024-11-13 14:11:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:56,491 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2024-11-13 14:11:56,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 9 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-13 14:11:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2024-11-13 14:11:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 14:11:56,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:56,493 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1] [2024-11-13 14:11:56,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:11:56,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:11:56,694 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_40_to_50_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:56,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2033142052, now seen corresponding path program 1 times [2024-11-13 14:11:56,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:56,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479740342] [2024-11-13 14:11:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:56,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:11:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:11:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:11:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-13 14:11:56,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:56,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479740342] [2024-11-13 14:11:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479740342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:11:56,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:11:56,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:11:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171053999] [2024-11-13 14:11:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:11:56,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:11:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:11:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:11:56,919 INFO L87 Difference]: Start difference. First operand 313 states and 384 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:11:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:57,166 INFO L93 Difference]: Finished difference Result 317 states and 390 transitions. [2024-11-13 14:11:57,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:11:57,167 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2024-11-13 14:11:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:57,173 INFO L225 Difference]: With dead ends: 317 [2024-11-13 14:11:57,173 INFO L226 Difference]: Without dead ends: 316 [2024-11-13 14:11:57,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:11:57,174 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 37 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:57,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 231 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:11:57,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-13 14:11:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2024-11-13 14:11:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 222 states have (on average 1.2297297297297298) internal successors, (273), 246 states have internal predecessors, (273), 43 states have call successors, (43), 21 states have call predecessors, (43), 29 states have return successors, (66), 46 states have call predecessors, (66), 43 states have call successors, (66) [2024-11-13 14:11:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 382 transitions. [2024-11-13 14:11:57,270 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 382 transitions. Word has length 86 [2024-11-13 14:11:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:57,270 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 382 transitions. [2024-11-13 14:11:57,271 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:11:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 382 transitions. [2024-11-13 14:11:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-13 14:11:57,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:57,274 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1] [2024-11-13 14:11:57,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 14:11:57,274 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_40_to_50_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:11:57,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1397105760, now seen corresponding path program 1 times [2024-11-13 14:11:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:57,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433410476] [2024-11-13 14:11:57,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:57,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:58,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:58,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:58,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:58,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:58,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:11:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:11:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:11:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:11:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:11:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:11:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-13 14:11:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433410476] [2024-11-13 14:11:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433410476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59197405] [2024-11-13 14:11:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:59,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:59,135 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:59,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:11:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:59,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 14:11:59,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:59,411 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 14:11:59,417 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 14:12:00,093 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 14:12:00,611 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 23 treesize of output 3 [2024-11-13 14:12:00,665 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 14:12:00,670 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 14:12:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 14:12:00,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:12:02,160 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 14:12:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59197405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:03,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:12:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 30 [2024-11-13 14:12:03,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426603613] [2024-11-13 14:12:03,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:12:03,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:12:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:12:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1655, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 14:12:03,515 INFO L87 Difference]: Start difference. First operand 312 states and 382 transitions. Second operand has 31 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-13 14:12:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:07,176 INFO L93 Difference]: Finished difference Result 363 states and 452 transitions. [2024-11-13 14:12:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 14:12:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 87 [2024-11-13 14:12:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:07,179 INFO L225 Difference]: With dead ends: 363 [2024-11-13 14:12:07,179 INFO L226 Difference]: Without dead ends: 362 [2024-11-13 14:12:07,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=429, Invalid=4127, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 14:12:07,181 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 171 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:07,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1255 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1744 Invalid, 3 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 14:12:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-13 14:12:07,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 350. [2024-11-13 14:12:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 253 states have (on average 1.2450592885375493) internal successors, (315), 278 states have internal predecessors, (315), 46 states have call successors, (46), 22 states have call predecessors, (46), 33 states have return successors, (78), 50 states have call predecessors, (78), 46 states have call successors, (78) [2024-11-13 14:12:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 439 transitions. [2024-11-13 14:12:07,303 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 439 transitions. Word has length 87 [2024-11-13 14:12:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:07,303 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 439 transitions. [2024-11-13 14:12:07,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-13 14:12:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 439 transitions. [2024-11-13 14:12:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 14:12:07,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:07,305 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1] [2024-11-13 14:12:07,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:12:07,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 14:12:07,509 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_40_to_50_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:12:07,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -360605530, now seen corresponding path program 1 times [2024-11-13 14:12:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159715412] [2024-11-13 14:12:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:07,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:12:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:12:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:12:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:12:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:12:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:12:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:12:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:12:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:12:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:12:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 14:12:08,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159715412] [2024-11-13 14:12:08,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159715412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525919366] [2024-11-13 14:12:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:08,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:08,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:08,730 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:08,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:12:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:09,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:12:09,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:09,029 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 14:12:09,786 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 14:12:09,850 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 14:12:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-13 14:12:09,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:12:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525919366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2024-11-13 14:12:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374913717] [2024-11-13 14:12:09,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:09,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:12:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:12:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:12:09,889 INFO L87 Difference]: Start difference. First operand 350 states and 439 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:12:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:10,454 INFO L93 Difference]: Finished difference Result 374 states and 464 transitions. [2024-11-13 14:12:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:12:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88 [2024-11-13 14:12:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:10,458 INFO L225 Difference]: With dead ends: 374 [2024-11-13 14:12:10,458 INFO L226 Difference]: Without dead ends: 373 [2024-11-13 14:12:10,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 93 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:12:10,459 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 60 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:10,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 370 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:12:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-13 14:12:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 356. [2024-11-13 14:12:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 259 states have (on average 1.2432432432432432) internal successors, (322), 284 states have internal predecessors, (322), 46 states have call successors, (46), 22 states have call predecessors, (46), 33 states have return successors, (78), 50 states have call predecessors, (78), 46 states have call successors, (78) [2024-11-13 14:12:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 446 transitions. [2024-11-13 14:12:10,588 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 446 transitions. Word has length 88 [2024-11-13 14:12:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:10,588 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 446 transitions. [2024-11-13 14:12:10,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:12:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 446 transitions. [2024-11-13 14:12:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 14:12:10,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:10,590 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:10,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:12:10,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 14:12:10,791 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_40_to_50_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:12:10,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1706130530, now seen corresponding path program 1 times [2024-11-13 14:12:10,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:10,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185607061] [2024-11-13 14:12:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:12:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:12:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:12:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:12:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 14:12:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:12:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:12:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 14:12:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:12:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 14:12:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-13 14:12:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185607061] [2024-11-13 14:12:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185607061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:12:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571939614] [2024-11-13 14:12:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:11,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:12:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:12:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:12:11,214 INFO L87 Difference]: Start difference. First operand 356 states and 446 transitions. Second operand has 8 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:12:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:11,797 INFO L93 Difference]: Finished difference Result 371 states and 461 transitions. [2024-11-13 14:12:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:12:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 89 [2024-11-13 14:12:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:11,800 INFO L225 Difference]: With dead ends: 371 [2024-11-13 14:12:11,800 INFO L226 Difference]: Without dead ends: 370 [2024-11-13 14:12:11,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:12:11,801 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 90 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:11,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 342 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:12:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-13 14:12:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 358. [2024-11-13 14:12:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 261 states have (on average 1.2375478927203065) internal successors, (323), 286 states have internal predecessors, (323), 46 states have call successors, (46), 22 states have call predecessors, (46), 33 states have return successors, (78), 50 states have call predecessors, (78), 46 states have call successors, (78) [2024-11-13 14:12:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 447 transitions. [2024-11-13 14:12:11,906 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 447 transitions. Word has length 89 [2024-11-13 14:12:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:11,906 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 447 transitions. [2024-11-13 14:12:11,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 14:12:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 447 transitions. [2024-11-13 14:12:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 14:12:11,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:11,908 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:11,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 14:12:11,909 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:12:11,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash -29578387, now seen corresponding path program 1 times [2024-11-13 14:12:11,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205985000] [2024-11-13 14:12:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:12:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067068249] [2024-11-13 14:12:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:11,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:11,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:11,976 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:11,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:12:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:12,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-13 14:12:12,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:12,349 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 14:12:12,357 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 14:12:12,365 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 14:12:12,374 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 14:12:13,431 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 14:12:13,443 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 14:12:14,528 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 23 treesize of output 3 [2024-11-13 14:12:14,631 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 14:12:14,759 INFO L349 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2024-11-13 14:12:14,759 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 30 treesize of output 22 [2024-11-13 14:12:14,887 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 14:12:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 48 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 14:12:14,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:12:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205985000] [2024-11-13 14:12:16,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:12:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067068249] [2024-11-13 14:12:16,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067068249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:16,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:16,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-13 14:12:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813879553] [2024-11-13 14:12:16,977 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:12:16,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:12:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:12:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:12:16,979 INFO L87 Difference]: Start difference. First operand 358 states and 447 transitions. Second operand has 21 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 7 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-13 14:12:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:19,564 INFO L93 Difference]: Finished difference Result 404 states and 497 transitions. [2024-11-13 14:12:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:12:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 7 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 93 [2024-11-13 14:12:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:19,568 INFO L225 Difference]: With dead ends: 404 [2024-11-13 14:12:19,568 INFO L226 Difference]: Without dead ends: 403 [2024-11-13 14:12:19,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:12:19,569 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 143 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:19,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 714 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 981 Invalid, 3 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:12:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-13 14:12:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 381. [2024-11-13 14:12:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 279 states have (on average 1.2437275985663083) internal successors, (347), 305 states have internal predecessors, (347), 49 states have call successors, (49), 23 states have call predecessors, (49), 35 states have return successors, (85), 53 states have call predecessors, (85), 49 states have call successors, (85) [2024-11-13 14:12:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 481 transitions. [2024-11-13 14:12:19,714 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 481 transitions. Word has length 93 [2024-11-13 14:12:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:19,715 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 481 transitions. [2024-11-13 14:12:19,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 7 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-13 14:12:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 481 transitions. [2024-11-13 14:12:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 14:12:19,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:19,717 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:19,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 14:12:19,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 14:12:19,921 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:12:19,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash -916929960, now seen corresponding path program 1 times [2024-11-13 14:12:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476882306] [2024-11-13 14:12:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:12:19,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418222278] [2024-11-13 14:12:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:19,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:19,973 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:19,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:12:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:20,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-13 14:12:20,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:20,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:12:20,372 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 14:12:20,380 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 11 treesize of output 7 [2024-11-13 14:12:20,390 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 14:12:21,553 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 14:12:21,567 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 14:12:22,830 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 14:12:23,079 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-13 14:12:23,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-11-13 14:12:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 48 proven. 19 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-13 14:12:23,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:12:37,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:37,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476882306] [2024-11-13 14:12:37,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:12:37,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418222278] [2024-11-13 14:12:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418222278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:37,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:37,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-13 14:12:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202715482] [2024-11-13 14:12:37,578 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:12:37,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:12:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:12:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=763, Unknown=3, NotChecked=0, Total=870 [2024-11-13 14:12:37,580 INFO L87 Difference]: Start difference. First operand 381 states and 481 transitions. Second operand has 23 states, 19 states have (on average 3.0) internal successors, (57), 20 states have internal predecessors, (57), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-13 14:12:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:41,309 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2024-11-13 14:12:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:12:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 3.0) internal successors, (57), 20 states have internal predecessors, (57), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 94 [2024-11-13 14:12:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:41,312 INFO L225 Difference]: With dead ends: 403 [2024-11-13 14:12:41,312 INFO L226 Difference]: Without dead ends: 402 [2024-11-13 14:12:41,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=186, Invalid=1293, Unknown=3, NotChecked=0, Total=1482 [2024-11-13 14:12:41,314 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 143 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 28 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:41,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 824 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1258 Invalid, 5 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 14:12:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-13 14:12:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 381. [2024-11-13 14:12:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 279 states have (on average 1.2365591397849462) internal successors, (345), 305 states have internal predecessors, (345), 49 states have call successors, (49), 23 states have call predecessors, (49), 35 states have return successors, (85), 53 states have call predecessors, (85), 49 states have call successors, (85) [2024-11-13 14:12:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 479 transitions. [2024-11-13 14:12:41,456 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 479 transitions. Word has length 94 [2024-11-13 14:12:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:41,457 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 479 transitions. [2024-11-13 14:12:41,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 3.0) internal successors, (57), 20 states have internal predecessors, (57), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-13 14:12:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 479 transitions. [2024-11-13 14:12:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 14:12:41,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:41,459 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:41,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 14:12:41,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea51da50-ae1c-491f-ab1e-10d105df3443/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 14:12:41,660 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_40_to_50_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-13 14:12:41,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1639942351, now seen corresponding path program 1 times [2024-11-13 14:12:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:41,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325802167] [2024-11-13 14:12:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:41,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat