./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB --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 e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:03:26,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:03:26,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:03:26,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:03:26,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:03:26,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:03:26,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:03:26,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:03:26,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:03:26,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:03:26,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:03:26,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:03:26,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:03:26,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:03:26,634 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:03:26,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:03:26,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:03:26,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:03:26,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:03:26,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:03:26,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:03:26,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:03:26,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:03:26,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:03:26,636 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:03:26,636 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:03:26,636 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:03:26,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:03:26,636 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:03:26,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:03:26,637 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:03:26,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:26,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:26,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:26,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:26,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:03:26,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:26,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:03:26,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:03:26,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:03:26,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:03:26,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:03:26,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:03:26,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:03:26,639 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_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 [2024-11-28 04:03:26,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:03:26,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:03:26,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:03:26,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:03:26,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:03:26,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2024-11-28 04:03:30,001 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/data/9deebd851/829c05edbc4547378323a9eeee12a5ac/FLAGf5ee1434d [2024-11-28 04:03:30,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:03:30,319 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2024-11-28 04:03:30,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/data/9deebd851/829c05edbc4547378323a9eeee12a5ac/FLAGf5ee1434d [2024-11-28 04:03:30,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/data/9deebd851/829c05edbc4547378323a9eeee12a5ac [2024-11-28 04:03:30,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:03:30,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:03:30,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:30,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:03:30,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:03:30,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4a8dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30, skipping insertion in model container [2024-11-28 04:03:30,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:03:30,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:30,668 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:03:30,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:30,728 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:03:30,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30 WrapperNode [2024-11-28 04:03:30,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:30,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:30,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:03:30,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:03:30,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,781 INFO L138 Inliner]: procedures = 16, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2024-11-28 04:03:30,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:30,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:03:30,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:03:30,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:03:30,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,838 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 6, 4, 5, 27, 3]. 57 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 2, 1]. [2024-11-28 04:03:30,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,850 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:03:30,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:03:30,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:03:30,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:03:30,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:30,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:30,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:03:30,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:03:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:03:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-28 04:03:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-28 04:03:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:03:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:03:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:03:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:03:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:03:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:03:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:03:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:03:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:03:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:03:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:03:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:03:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:03:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:03:31,054 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:03:31,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:03:31,697 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-11-28 04:03:31,697 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:03:31,711 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:03:31,712 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:03:31,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:31 BoogieIcfgContainer [2024-11-28 04:03:31,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:03:31,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:03:31,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:03:31,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:03:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:03:30" (1/3) ... [2024-11-28 04:03:31,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0501a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:31, skipping insertion in model container [2024-11-28 04:03:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (2/3) ... [2024-11-28 04:03:31,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0501a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:31, skipping insertion in model container [2024-11-28 04:03:31,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:31" (3/3) ... [2024-11-28 04:03:31,722 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_ps4.c [2024-11-28 04:03:31,738 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:03:31,739 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps4.c that has 3 procedures, 145 locations, 1 initial locations, 0 loop locations, and 60 error locations. [2024-11-28 04:03:31,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:03:31,810 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;@6861c41c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:03:31,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-28 04:03:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 138 states have internal predecessors, (140), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:03:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:03:31,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:31,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:03:31,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:31,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1066099455, now seen corresponding path program 1 times [2024-11-28 04:03:31,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879147447] [2024-11-28 04:03:31,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:32,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879147447] [2024-11-28 04:03:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879147447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:32,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:32,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147058022] [2024-11-28 04:03:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:32,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:32,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:32,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:32,566 INFO L87 Difference]: Start difference. First operand has 145 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 138 states have internal predecessors, (140), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:32,884 INFO L93 Difference]: Finished difference Result 370 states and 392 transitions. [2024-11-28 04:03:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:32,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:03:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:32,894 INFO L225 Difference]: With dead ends: 370 [2024-11-28 04:03:32,895 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 04:03:32,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:32,902 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:32,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 642 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 04:03:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 167. [2024-11-28 04:03:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 159 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2024-11-28 04:03:32,960 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 6 [2024-11-28 04:03:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:32,961 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2024-11-28 04:03:32,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2024-11-28 04:03:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:03:32,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:32,962 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:32,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:03:32,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:32,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1975608675, now seen corresponding path program 1 times [2024-11-28 04:03:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175805512] [2024-11-28 04:03:32,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519839695] [2024-11-28 04:03:33,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:33,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:33,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:33,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:33,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:03:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:33,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:03:33,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:33,186 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 [2024-11-28 04:03:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:33,255 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:33,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:33,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175805512] [2024-11-28 04:03:33,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519839695] [2024-11-28 04:03:33,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519839695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:33,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:33,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875543107] [2024-11-28 04:03:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:33,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:33,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:33,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:33,261 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:33,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:33,643 INFO L93 Difference]: Finished difference Result 246 states and 251 transitions. [2024-11-28 04:03:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:33,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:03:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:33,648 INFO L225 Difference]: With dead ends: 246 [2024-11-28 04:03:33,648 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 04:03:33,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:33,652 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 172 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:33,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 534 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 04:03:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 167. [2024-11-28 04:03:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7575757575757576) internal successors, (174), 159 states have internal predecessors, (174), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2024-11-28 04:03:33,674 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 8 [2024-11-28 04:03:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:33,674 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2024-11-28 04:03:33,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2024-11-28 04:03:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:03:33,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:33,675 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:33,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:33,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:33,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:33,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash -204185975, now seen corresponding path program 1 times [2024-11-28 04:03:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:33,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826174200] [2024-11-28 04:03:33,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:33,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826174200] [2024-11-28 04:03:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826174200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:34,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684016790] [2024-11-28 04:03:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:34,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:34,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:34,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:34,298 INFO L87 Difference]: Start difference. First operand 167 states and 185 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:34,582 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2024-11-28 04:03:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 04:03:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:34,584 INFO L225 Difference]: With dead ends: 216 [2024-11-28 04:03:34,584 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 04:03:34,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:34,585 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 176 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:34,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 611 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 04:03:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2024-11-28 04:03:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7474747474747474) internal successors, (173), 159 states have internal predecessors, (173), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 184 transitions. [2024-11-28 04:03:34,603 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 184 transitions. Word has length 14 [2024-11-28 04:03:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:34,604 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 184 transitions. [2024-11-28 04:03:34,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:34,604 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 184 transitions. [2024-11-28 04:03:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:03:34,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:34,605 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:34,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:03:34,605 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:34,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2034797876, now seen corresponding path program 1 times [2024-11-28 04:03:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:34,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59447597] [2024-11-28 04:03:34,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:34,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241355757] [2024-11-28 04:03:34,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:34,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:34,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:34,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:34,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:03:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:34,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:03:34,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:34,744 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 [2024-11-28 04:03:34,750 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 [2024-11-28 04:03:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:34,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:34,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59447597] [2024-11-28 04:03:34,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:34,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241355757] [2024-11-28 04:03:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241355757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:34,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:34,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222448198] [2024-11-28 04:03:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:34,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:34,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:34,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:34,925 INFO L87 Difference]: Start difference. First operand 167 states and 184 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:35,318 INFO L93 Difference]: Finished difference Result 203 states and 208 transitions. [2024-11-28 04:03:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 04:03:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:35,320 INFO L225 Difference]: With dead ends: 203 [2024-11-28 04:03:35,320 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 04:03:35,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:35,321 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 152 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:35,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 639 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 04:03:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 167. [2024-11-28 04:03:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7373737373737375) internal successors, (172), 159 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 183 transitions. [2024-11-28 04:03:35,337 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 183 transitions. Word has length 15 [2024-11-28 04:03:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:35,337 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 183 transitions. [2024-11-28 04:03:35,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 183 transitions. [2024-11-28 04:03:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:03:35,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:35,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:35,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:35,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:35,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:35,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1345775339, now seen corresponding path program 1 times [2024-11-28 04:03:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:35,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841106280] [2024-11-28 04:03:35,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:35,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:35,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841106280] [2024-11-28 04:03:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841106280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:35,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818887462] [2024-11-28 04:03:35,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:35,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:35,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:35,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:35,846 INFO L87 Difference]: Start difference. First operand 167 states and 183 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:36,128 INFO L93 Difference]: Finished difference Result 238 states and 243 transitions. [2024-11-28 04:03:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:03:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:36,131 INFO L225 Difference]: With dead ends: 238 [2024-11-28 04:03:36,131 INFO L226 Difference]: Without dead ends: 232 [2024-11-28 04:03:36,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:36,132 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 134 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:36,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 541 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-28 04:03:36,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 167. [2024-11-28 04:03:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6767676767676767) internal successors, (166), 159 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2024-11-28 04:03:36,146 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 16 [2024-11-28 04:03:36,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:36,146 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2024-11-28 04:03:36,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2024-11-28 04:03:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:03:36,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:36,148 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:36,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:03:36,148 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:36,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1662312431, now seen corresponding path program 1 times [2024-11-28 04:03:36,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:36,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469594827] [2024-11-28 04:03:36,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:36,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010141502] [2024-11-28 04:03:36,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:36,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:36,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:36,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:03:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:36,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:03:36,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:36,318 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 [2024-11-28 04:03:36,327 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 [2024-11-28 04:03:36,411 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 [2024-11-28 04:03:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:36,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:36,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:36,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469594827] [2024-11-28 04:03:36,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:36,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010141502] [2024-11-28 04:03:36,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010141502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:36,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:03:36,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053638948] [2024-11-28 04:03:36,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:36,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:03:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:36,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:03:36,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:36,600 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:37,247 INFO L93 Difference]: Finished difference Result 196 states and 201 transitions. [2024-11-28 04:03:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:03:37,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-28 04:03:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:37,249 INFO L225 Difference]: With dead ends: 196 [2024-11-28 04:03:37,249 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 04:03:37,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:03:37,250 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 126 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:37,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 714 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:03:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 04:03:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 167. [2024-11-28 04:03:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 159 states have internal predecessors, (165), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2024-11-28 04:03:37,278 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 22 [2024-11-28 04:03:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:37,278 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2024-11-28 04:03:37,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2024-11-28 04:03:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:03:37,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:37,282 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:37,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:37,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:37,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:37,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 7922260, now seen corresponding path program 1 times [2024-11-28 04:03:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:37,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295374297] [2024-11-28 04:03:37,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:37,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:37,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430480509] [2024-11-28 04:03:37,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:37,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:37,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:37,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:37,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:03:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:37,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:03:37,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:37,668 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 [2024-11-28 04:03:37,675 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 [2024-11-28 04:03:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:37,928 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:37,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295374297] [2024-11-28 04:03:37,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430480509] [2024-11-28 04:03:37,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430480509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:37,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:37,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:03:37,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209182006] [2024-11-28 04:03:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:37,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:03:37,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:37,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:03:37,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:37,931 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:38,337 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2024-11-28 04:03:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:03:38,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 04:03:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:38,339 INFO L225 Difference]: With dead ends: 195 [2024-11-28 04:03:38,340 INFO L226 Difference]: Without dead ends: 194 [2024-11-28 04:03:38,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:03:38,341 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 119 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:38,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 635 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-28 04:03:38,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 167. [2024-11-28 04:03:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6565656565656566) internal successors, (164), 159 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2024-11-28 04:03:38,352 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 23 [2024-11-28 04:03:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:38,352 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2024-11-28 04:03:38,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2024-11-28 04:03:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:03:38,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:38,353 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:38,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:03:38,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:38,554 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:38,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash 245590131, now seen corresponding path program 1 times [2024-11-28 04:03:38,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:38,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446475370] [2024-11-28 04:03:38,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:38,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:38,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55904146] [2024-11-28 04:03:38,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:38,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:38,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:38,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:38,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:03:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:38,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:03:38,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:38,699 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 [2024-11-28 04:03:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:38,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:38,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446475370] [2024-11-28 04:03:38,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:38,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55904146] [2024-11-28 04:03:38,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55904146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:38,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:38,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329250843] [2024-11-28 04:03:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:38,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:38,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:38,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:38,786 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:38,984 INFO L93 Difference]: Finished difference Result 230 states and 235 transitions. [2024-11-28 04:03:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-28 04:03:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:38,986 INFO L225 Difference]: With dead ends: 230 [2024-11-28 04:03:38,986 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 04:03:38,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:38,987 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 108 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:38,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 560 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 04:03:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2024-11-28 04:03:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6363636363636365) internal successors, (162), 159 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 173 transitions. [2024-11-28 04:03:39,000 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 173 transitions. Word has length 24 [2024-11-28 04:03:39,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:39,001 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 173 transitions. [2024-11-28 04:03:39,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:39,001 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 173 transitions. [2024-11-28 04:03:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 04:03:39,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:39,002 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:39,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:39,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:39,203 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:39,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:39,203 INFO L85 PathProgramCache]: Analyzing trace with hash -211083051, now seen corresponding path program 1 times [2024-11-28 04:03:39,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:39,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752423541] [2024-11-28 04:03:39,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:39,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956593411] [2024-11-28 04:03:39,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:39,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:39,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:03:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:39,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:03:39,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:39,340 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 [2024-11-28 04:03:39,346 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 [2024-11-28 04:03:39,397 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 [2024-11-28 04:03:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:39,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:39,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:39,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752423541] [2024-11-28 04:03:39,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956593411] [2024-11-28 04:03:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956593411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:39,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:03:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94984765] [2024-11-28 04:03:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:39,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:03:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:39,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:03:39,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:39,651 INFO L87 Difference]: Start difference. First operand 167 states and 173 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:40,169 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2024-11-28 04:03:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:40,169 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 04:03:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:40,171 INFO L225 Difference]: With dead ends: 192 [2024-11-28 04:03:40,171 INFO L226 Difference]: Without dead ends: 191 [2024-11-28 04:03:40,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:03:40,172 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 96 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:40,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 701 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:03:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-28 04:03:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 167. [2024-11-28 04:03:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6262626262626263) internal successors, (161), 159 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 172 transitions. [2024-11-28 04:03:40,182 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 172 transitions. Word has length 26 [2024-11-28 04:03:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:40,183 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 172 transitions. [2024-11-28 04:03:40,183 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 172 transitions. [2024-11-28 04:03:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:03:40,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:40,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:40,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:40,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:40,388 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:40,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2046360088, now seen corresponding path program 1 times [2024-11-28 04:03:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339180311] [2024-11-28 04:03:40,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:40,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420235954] [2024-11-28 04:03:40,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:40,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:40,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:40,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:40,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:03:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:40,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:03:40,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:40,517 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 [2024-11-28 04:03:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:40,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339180311] [2024-11-28 04:03:40,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420235954] [2024-11-28 04:03:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420235954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376779199] [2024-11-28 04:03:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:40,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:40,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:40,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:40,703 INFO L87 Difference]: Start difference. First operand 167 states and 172 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:41,056 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2024-11-28 04:03:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:41,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-28 04:03:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:41,058 INFO L225 Difference]: With dead ends: 227 [2024-11-28 04:03:41,058 INFO L226 Difference]: Without dead ends: 226 [2024-11-28 04:03:41,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:41,059 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 101 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:41,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 615 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-28 04:03:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 167. [2024-11-28 04:03:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-11-28 04:03:41,068 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 27 [2024-11-28 04:03:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:41,068 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-11-28 04:03:41,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-11-28 04:03:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:03:41,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:41,071 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:41,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:41,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:41,272 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:41,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1229763169, now seen corresponding path program 1 times [2024-11-28 04:03:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:41,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243518380] [2024-11-28 04:03:41,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:41,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243518380] [2024-11-28 04:03:41,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243518380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:41,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:41,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969462560] [2024-11-28 04:03:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:41,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:41,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:41,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:41,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:41,613 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-11-28 04:03:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:41,748 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2024-11-28 04:03:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:41,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 35 [2024-11-28 04:03:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:41,751 INFO L225 Difference]: With dead ends: 230 [2024-11-28 04:03:41,751 INFO L226 Difference]: Without dead ends: 229 [2024-11-28 04:03:41,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:41,751 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 93 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:41,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 673 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-28 04:03:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 168. [2024-11-28 04:03:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.61) internal successors, (161), 160 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2024-11-28 04:03:41,760 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 35 [2024-11-28 04:03:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:41,760 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2024-11-28 04:03:41,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-11-28 04:03:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2024-11-28 04:03:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 04:03:41,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:41,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:41,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:03:41,762 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:41,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash -532047338, now seen corresponding path program 1 times [2024-11-28 04:03:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008610054] [2024-11-28 04:03:41,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008610054] [2024-11-28 04:03:42,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008610054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:42,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:42,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914047572] [2024-11-28 04:03:42,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:42,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:42,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:42,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:42,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:42,107 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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) [2024-11-28 04:03:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:42,217 INFO L93 Difference]: Finished difference Result 168 states and 172 transitions. [2024-11-28 04:03:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 36 [2024-11-28 04:03:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:42,220 INFO L225 Difference]: With dead ends: 168 [2024-11-28 04:03:42,220 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 04:03:42,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:42,221 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 114 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:42,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 632 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 04:03:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-28 04:03:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 100 states have (on average 1.6) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-11-28 04:03:42,229 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 36 [2024-11-28 04:03:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:42,229 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-11-28 04:03:42,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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) [2024-11-28 04:03:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-11-28 04:03:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:03:42,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:42,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:42,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:03:42,231 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:42,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash 686401795, now seen corresponding path program 1 times [2024-11-28 04:03:42,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:42,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189584531] [2024-11-28 04:03:42,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:42,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:42,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:42,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189584531] [2024-11-28 04:03:42,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189584531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:42,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:42,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125671470] [2024-11-28 04:03:42,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:42,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:42,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:42,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:42,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:42,467 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (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) [2024-11-28 04:03:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:42,628 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-11-28 04:03:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (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 37 [2024-11-28 04:03:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:42,630 INFO L225 Difference]: With dead ends: 223 [2024-11-28 04:03:42,630 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 04:03:42,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:42,631 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 85 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:42,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 571 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 04:03:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2024-11-28 04:03:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 103 states have (on average 1.5825242718446602) internal successors, (163), 162 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:03:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2024-11-28 04:03:42,643 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 37 [2024-11-28 04:03:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:42,644 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2024-11-28 04:03:42,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (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) [2024-11-28 04:03:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2024-11-28 04:03:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:03:42,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:42,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:42,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:03:42,645 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:42,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash -196515477, now seen corresponding path program 1 times [2024-11-28 04:03:42,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56812018] [2024-11-28 04:03:42,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:42,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:42,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868715782] [2024-11-28 04:03:42,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:42,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:42,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:42,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:03:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:42,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:03:42,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:42,811 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 [2024-11-28 04:03:42,816 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 [2024-11-28 04:03:42,825 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 [2024-11-28 04:03:43,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:03:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:43,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:43,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:43,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56812018] [2024-11-28 04:03:43,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:43,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868715782] [2024-11-28 04:03:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868715782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:43,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:03:43,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350875256] [2024-11-28 04:03:43,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:43,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:03:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:43,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:03:43,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:43,460 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:43,848 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-11-28 04:03:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-28 04:03:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:43,850 INFO L225 Difference]: With dead ends: 223 [2024-11-28 04:03:43,851 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 04:03:43,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:03:43,852 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 112 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:43,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 669 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 04:03:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 174. [2024-11-28 04:03:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 106 states have (on average 1.5660377358490567) internal successors, (166), 164 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:03:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2024-11-28 04:03:43,862 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 38 [2024-11-28 04:03:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:43,862 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2024-11-28 04:03:43,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2024-11-28 04:03:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:03:43,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:43,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:43,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:44,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:03:44,064 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:44,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1797012374, now seen corresponding path program 1 times [2024-11-28 04:03:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439786197] [2024-11-28 04:03:44,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:44,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819454925] [2024-11-28 04:03:44,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:44,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:44,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:44,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:03:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:44,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:03:44,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:44,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:44,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439786197] [2024-11-28 04:03:44,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819454925] [2024-11-28 04:03:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819454925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:44,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:44,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:03:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402412257] [2024-11-28 04:03:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:44,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:44,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:44,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:44,296 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:44,456 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2024-11-28 04:03:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-11-28 04:03:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:44,458 INFO L225 Difference]: With dead ends: 222 [2024-11-28 04:03:44,458 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 04:03:44,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:44,459 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 86 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:44,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 381 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 04:03:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2024-11-28 04:03:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.560747663551402) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:03:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-11-28 04:03:44,468 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 39 [2024-11-28 04:03:44,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:44,468 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-11-28 04:03:44,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-11-28 04:03:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:03:44,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:44,471 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:44,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:03:44,672 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:44,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1792835675, now seen corresponding path program 1 times [2024-11-28 04:03:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:44,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650393406] [2024-11-28 04:03:44,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:44,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077966741] [2024-11-28 04:03:44,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:44,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:44,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:03:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:44,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:03:44,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:44,836 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 [2024-11-28 04:03:45,015 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 [2024-11-28 04:03:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:45,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:45,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650393406] [2024-11-28 04:03:45,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:45,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077966741] [2024-11-28 04:03:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077966741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:45,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:03:45,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959526917] [2024-11-28 04:03:45,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:45,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:03:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:45,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:03:45,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:45,036 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-11-28 04:03:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:45,304 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2024-11-28 04:03:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:45,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 39 [2024-11-28 04:03:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:45,306 INFO L225 Difference]: With dead ends: 223 [2024-11-28 04:03:45,306 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 04:03:45,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:03:45,307 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 220 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:45,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 498 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 04:03:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 173. [2024-11-28 04:03:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 163 states have internal predecessors, (165), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:03:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2024-11-28 04:03:45,318 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 39 [2024-11-28 04:03:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:45,318 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2024-11-28 04:03:45,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-11-28 04:03:45,318 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2024-11-28 04:03:45,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:03:45,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:45,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:45,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:45,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:03:45,523 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:45,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash 127191373, now seen corresponding path program 1 times [2024-11-28 04:03:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:45,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82574326] [2024-11-28 04:03:45,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:45,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786936605] [2024-11-28 04:03:45,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:45,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:45,551 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:45,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:03:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:45,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:03:45,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:45,687 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 [2024-11-28 04:03:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:45,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:45,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82574326] [2024-11-28 04:03:45,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786936605] [2024-11-28 04:03:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786936605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:45,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:45,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:03:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462944061] [2024-11-28 04:03:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:45,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:45,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:45,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:45,784 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:45,975 INFO L93 Difference]: Finished difference Result 219 states and 224 transitions. [2024-11-28 04:03:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-28 04:03:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:45,977 INFO L225 Difference]: With dead ends: 219 [2024-11-28 04:03:45,978 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 04:03:45,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:45,979 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 78 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:45,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 371 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 04:03:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 175. [2024-11-28 04:03:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5321100917431192) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:03:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-11-28 04:03:45,994 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 40 [2024-11-28 04:03:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:45,994 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-11-28 04:03:45,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-11-28 04:03:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:03:45,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:45,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:46,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:46,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:03:46,199 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:46,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash 256669018, now seen corresponding path program 1 times [2024-11-28 04:03:46,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800352414] [2024-11-28 04:03:46,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485941553] [2024-11-28 04:03:46,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:46,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:46,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:46,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:46,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:03:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:46,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:03:46,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:46,375 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 [2024-11-28 04:03:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:46,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:46,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:46,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800352414] [2024-11-28 04:03:46,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:46,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485941553] [2024-11-28 04:03:46,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485941553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:46,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:46,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:03:46,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694515387] [2024-11-28 04:03:46,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:46,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:03:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:46,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:03:46,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:46,540 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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) [2024-11-28 04:03:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:46,804 INFO L93 Difference]: Finished difference Result 236 states and 243 transitions. [2024-11-28 04:03:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:03:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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 40 [2024-11-28 04:03:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:46,806 INFO L225 Difference]: With dead ends: 236 [2024-11-28 04:03:46,806 INFO L226 Difference]: Without dead ends: 235 [2024-11-28 04:03:46,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:46,807 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 90 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:46,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 639 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-28 04:03:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 184. [2024-11-28 04:03:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 173 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 04:03:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 190 transitions. [2024-11-28 04:03:46,818 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 190 transitions. Word has length 40 [2024-11-28 04:03:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:46,819 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 190 transitions. [2024-11-28 04:03:46,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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) [2024-11-28 04:03:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 190 transitions. [2024-11-28 04:03:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:03:46,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:46,820 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:46,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:03:47,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:03:47,024 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:47,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -633194937, now seen corresponding path program 1 times [2024-11-28 04:03:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699943267] [2024-11-28 04:03:47,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167821125] [2024-11-28 04:03:47,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:47,049 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:47,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:03:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:47,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:03:47,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:47,199 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 [2024-11-28 04:03:47,366 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 [2024-11-28 04:03:47,401 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 13 [2024-11-28 04:03:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:47,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699943267] [2024-11-28 04:03:47,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167821125] [2024-11-28 04:03:47,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167821125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:47,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:03:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176844612] [2024-11-28 04:03:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:47,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:03:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:47,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:03:47,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:47,429 INFO L87 Difference]: Start difference. First operand 184 states and 190 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 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) [2024-11-28 04:03:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:47,749 INFO L93 Difference]: Finished difference Result 225 states and 230 transitions. [2024-11-28 04:03:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:03:47,750 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), 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 41 [2024-11-28 04:03:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:47,751 INFO L225 Difference]: With dead ends: 225 [2024-11-28 04:03:47,751 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 04:03:47,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:03:47,752 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 216 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:47,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 544 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 04:03:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 183. [2024-11-28 04:03:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.5086206896551724) internal successors, (175), 172 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 04:03:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 189 transitions. [2024-11-28 04:03:47,768 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 189 transitions. Word has length 41 [2024-11-28 04:03:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:47,768 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 189 transitions. [2024-11-28 04:03:47,769 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), 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) [2024-11-28 04:03:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 189 transitions. [2024-11-28 04:03:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:03:47,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:47,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:47,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:47,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:47,970 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:47,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1971829039, now seen corresponding path program 1 times [2024-11-28 04:03:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494372596] [2024-11-28 04:03:47,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429377625] [2024-11-28 04:03:48,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:48,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:48,006 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:48,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:03:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:48,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:03:48,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:48,136 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 [2024-11-28 04:03:48,140 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 [2024-11-28 04:03:48,205 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 [2024-11-28 04:03:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:48,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494372596] [2024-11-28 04:03:48,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:48,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429377625] [2024-11-28 04:03:48,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429377625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:48,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:48,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:48,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204570049] [2024-11-28 04:03:48,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:48,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:48,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:48,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:48,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:48,244 INFO L87 Difference]: Start difference. First operand 183 states and 189 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:48,441 INFO L93 Difference]: Finished difference Result 222 states and 226 transitions. [2024-11-28 04:03:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:48,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-28 04:03:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:48,443 INFO L225 Difference]: With dead ends: 222 [2024-11-28 04:03:48,444 INFO L226 Difference]: Without dead ends: 220 [2024-11-28 04:03:48,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:48,445 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 79 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:48,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 395 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-28 04:03:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 183. [2024-11-28 04:03:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 172 states have internal predecessors, (173), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 04:03:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2024-11-28 04:03:48,456 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 42 [2024-11-28 04:03:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:48,456 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2024-11-28 04:03:48,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2024-11-28 04:03:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:03:48,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:48,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:48,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:48,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:48,662 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:48,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1845793532, now seen corresponding path program 1 times [2024-11-28 04:03:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:48,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376061776] [2024-11-28 04:03:48,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:48,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025676470] [2024-11-28 04:03:48,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:48,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:48,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:48,688 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:48,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:03:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:48,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:03:48,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:48,828 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 11 treesize of output 7 [2024-11-28 04:03:48,972 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 [2024-11-28 04:03:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:49,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:49,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376061776] [2024-11-28 04:03:49,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025676470] [2024-11-28 04:03:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025676470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:49,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:03:49,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873594177] [2024-11-28 04:03:49,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:49,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:03:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:49,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:03:49,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:49,037 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2024-11-28 04:03:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:49,351 INFO L93 Difference]: Finished difference Result 233 states and 238 transitions. [2024-11-28 04:03:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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 42 [2024-11-28 04:03:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:49,353 INFO L225 Difference]: With dead ends: 233 [2024-11-28 04:03:49,354 INFO L226 Difference]: Without dead ends: 232 [2024-11-28 04:03:49,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:03:49,355 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 90 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:49,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 743 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-28 04:03:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 185. [2024-11-28 04:03:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.4830508474576272) internal successors, (175), 174 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 04:03:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2024-11-28 04:03:49,370 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 42 [2024-11-28 04:03:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:49,371 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2024-11-28 04:03:49,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2024-11-28 04:03:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2024-11-28 04:03:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:03:49,372 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:49,372 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:49,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:03:49,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:49,576 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:49,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1385024745, now seen corresponding path program 1 times [2024-11-28 04:03:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42579796] [2024-11-28 04:03:49,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42579796] [2024-11-28 04:03:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42579796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569797451] [2024-11-28 04:03:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:49,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:49,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:49,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:49,836 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-28 04:03:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:50,191 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2024-11-28 04:03:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:50,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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 43 [2024-11-28 04:03:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:50,193 INFO L225 Difference]: With dead ends: 190 [2024-11-28 04:03:50,196 INFO L226 Difference]: Without dead ends: 189 [2024-11-28 04:03:50,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:50,199 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 51 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:50,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 736 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-28 04:03:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2024-11-28 04:03:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 119 states have (on average 1.4789915966386555) internal successors, (176), 175 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 04:03:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2024-11-28 04:03:50,213 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 43 [2024-11-28 04:03:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:50,214 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2024-11-28 04:03:50,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-28 04:03:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2024-11-28 04:03:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:03:50,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:50,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:50,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:03:50,215 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:50,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -13905762, now seen corresponding path program 1 times [2024-11-28 04:03:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:50,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119886827] [2024-11-28 04:03:50,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:50,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119886827] [2024-11-28 04:03:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119886827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:50,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150112950] [2024-11-28 04:03:50,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:50,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:50,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:50,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:50,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:50,504 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-28 04:03:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:50,640 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2024-11-28 04:03:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:50,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 44 [2024-11-28 04:03:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:50,641 INFO L225 Difference]: With dead ends: 189 [2024-11-28 04:03:50,642 INFO L226 Difference]: Without dead ends: 188 [2024-11-28 04:03:50,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:50,642 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 48 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:50,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 623 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-28 04:03:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2024-11-28 04:03:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.475) internal successors, (177), 176 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 04:03:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2024-11-28 04:03:50,654 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 44 [2024-11-28 04:03:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:50,654 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2024-11-28 04:03:50,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-28 04:03:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2024-11-28 04:03:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:03:50,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:50,655 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:50,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:03:50,655 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:50,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash -305292993, now seen corresponding path program 1 times [2024-11-28 04:03:50,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:50,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512489962] [2024-11-28 04:03:50,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813577089] [2024-11-28 04:03:50,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:50,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:50,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:50,691 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:50,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:03:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:50,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 04:03:50,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:50,840 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 11 treesize of output 7 [2024-11-28 04:03:50,845 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 [2024-11-28 04:03:51,110 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 [2024-11-28 04:03:51,232 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 [2024-11-28 04:03:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:51,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512489962] [2024-11-28 04:03:51,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813577089] [2024-11-28 04:03:51,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813577089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:51,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:03:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-28 04:03:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330768199] [2024-11-28 04:03:51,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:51,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:03:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:51,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:03:51,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:03:51,739 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:54,398 INFO L93 Difference]: Finished difference Result 371 states and 381 transitions. [2024-11-28 04:03:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:03:54,399 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-28 04:03:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:54,401 INFO L225 Difference]: With dead ends: 371 [2024-11-28 04:03:54,402 INFO L226 Difference]: Without dead ends: 368 [2024-11-28 04:03:54,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:03:54,404 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 746 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:54,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1592 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:03:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-28 04:03:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 261. [2024-11-28 04:03:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 186 states have (on average 1.564516129032258) internal successors, (291), 244 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-28 04:03:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 317 transitions. [2024-11-28 04:03:54,426 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 317 transitions. Word has length 48 [2024-11-28 04:03:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:54,427 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 317 transitions. [2024-11-28 04:03:54,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 317 transitions. [2024-11-28 04:03:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:03:54,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:54,428 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:54,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:03:54,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:03:54,632 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:54,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -398433112, now seen corresponding path program 1 times [2024-11-28 04:03:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:54,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714821970] [2024-11-28 04:03:54,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:54,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:03:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714821970] [2024-11-28 04:03:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714821970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:54,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:03:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039837288] [2024-11-28 04:03:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:54,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:54,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:54,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:54,825 INFO L87 Difference]: Start difference. First operand 261 states and 317 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:03:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:55,001 INFO L93 Difference]: Finished difference Result 300 states and 361 transitions. [2024-11-28 04:03:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2024-11-28 04:03:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:55,005 INFO L225 Difference]: With dead ends: 300 [2024-11-28 04:03:55,007 INFO L226 Difference]: Without dead ends: 298 [2024-11-28 04:03:55,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:55,009 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 76 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:55,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 376 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-28 04:03:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 264. [2024-11-28 04:03:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 189 states have (on average 1.5555555555555556) internal successors, (294), 246 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-28 04:03:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 320 transitions. [2024-11-28 04:03:55,037 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 320 transitions. Word has length 50 [2024-11-28 04:03:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:55,037 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 320 transitions. [2024-11-28 04:03:55,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:03:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 320 transitions. [2024-11-28 04:03:55,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:03:55,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:55,038 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-28 04:03:55,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:03:55,038 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:55,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1328788959, now seen corresponding path program 1 times [2024-11-28 04:03:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195058991] [2024-11-28 04:03:55,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693232590] [2024-11-28 04:03:55,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:55,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:55,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:55,071 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:55,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:03:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:55,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:03:55,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:55,254 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 [2024-11-28 04:03:55,408 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 [2024-11-28 04:03:55,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:03:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:55,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195058991] [2024-11-28 04:03:55,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693232590] [2024-11-28 04:03:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693232590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:55,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:03:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-28 04:03:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136415218] [2024-11-28 04:03:55,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:55,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:03:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:55,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:03:55,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:03:55,738 INFO L87 Difference]: Start difference. First operand 264 states and 320 transitions. Second operand has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:56,379 INFO L93 Difference]: Finished difference Result 298 states and 355 transitions. [2024-11-28 04:03:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:03:56,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-28 04:03:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:56,382 INFO L225 Difference]: With dead ends: 298 [2024-11-28 04:03:56,382 INFO L226 Difference]: Without dead ends: 297 [2024-11-28 04:03:56,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:03:56,383 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 388 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:56,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 712 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:03:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-28 04:03:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 265. [2024-11-28 04:03:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 190 states have (on average 1.5368421052631578) internal successors, (292), 246 states have internal predecessors, (292), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:03:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 320 transitions. [2024-11-28 04:03:56,409 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 320 transitions. Word has length 50 [2024-11-28 04:03:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:56,410 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 320 transitions. [2024-11-28 04:03:56,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 320 transitions. [2024-11-28 04:03:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:03:56,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:56,413 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-28 04:03:56,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:56,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:03:56,618 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:03:56,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1757215272, now seen corresponding path program 1 times [2024-11-28 04:03:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:56,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618173513] [2024-11-28 04:03:56,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:56,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359682940] [2024-11-28 04:03:56,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:56,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:56,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:56,652 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:03:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:56,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:03:56,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:56,839 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 [2024-11-28 04:03:56,997 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 [2024-11-28 04:03:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:57,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:01,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:01,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618173513] [2024-11-28 04:04:01,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:01,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359682940] [2024-11-28 04:04:01,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359682940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:01,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:01,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-28 04:04:01,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996150919] [2024-11-28 04:04:01,614 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:01,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:04:01,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:01,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:04:01,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=167, Unknown=1, NotChecked=0, Total=210 [2024-11-28 04:04:01,615 INFO L87 Difference]: Start difference. First operand 265 states and 320 transitions. Second operand has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:02,165 INFO L93 Difference]: Finished difference Result 326 states and 359 transitions. [2024-11-28 04:04:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:04:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-28 04:04:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:02,168 INFO L225 Difference]: With dead ends: 326 [2024-11-28 04:04:02,168 INFO L226 Difference]: Without dead ends: 325 [2024-11-28 04:04:02,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2024-11-28 04:04:02,169 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 209 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:02,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 825 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:04:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-28 04:04:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 265. [2024-11-28 04:04:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 190 states have (on average 1.5315789473684212) internal successors, (291), 246 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 319 transitions. [2024-11-28 04:04:02,193 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 319 transitions. Word has length 51 [2024-11-28 04:04:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:02,194 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 319 transitions. [2024-11-28 04:04:02,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 319 transitions. [2024-11-28 04:04:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:04:02,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:02,195 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:02,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:04:02,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:04:02,399 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:02,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash -642127094, now seen corresponding path program 1 times [2024-11-28 04:04:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:02,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116484548] [2024-11-28 04:04:02,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:02,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:02,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336225330] [2024-11-28 04:04:02,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:02,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:02,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:02,428 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:02,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:04:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:02,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:04:02,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:02,580 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 [2024-11-28 04:04:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:02,718 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:02,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116484548] [2024-11-28 04:04:02,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:02,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336225330] [2024-11-28 04:04:02,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336225330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:02,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:02,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:04:02,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689640788] [2024-11-28 04:04:02,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:02,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:04:02,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:02,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:04:02,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:02,720 INFO L87 Difference]: Start difference. First operand 265 states and 319 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:03,044 INFO L93 Difference]: Finished difference Result 305 states and 358 transitions. [2024-11-28 04:04:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:04:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2024-11-28 04:04:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:03,046 INFO L225 Difference]: With dead ends: 305 [2024-11-28 04:04:03,046 INFO L226 Difference]: Without dead ends: 299 [2024-11-28 04:04:03,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:04:03,048 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 129 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:03,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 446 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 7 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-28 04:04:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 271. [2024-11-28 04:04:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 196 states have (on average 1.5153061224489797) internal successors, (297), 252 states have internal predecessors, (297), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 325 transitions. [2024-11-28 04:04:03,069 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 325 transitions. Word has length 52 [2024-11-28 04:04:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:03,069 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 325 transitions. [2024-11-28 04:04:03,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 325 transitions. [2024-11-28 04:04:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:04:03,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:03,070 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:03,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:04:03,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:04:03,271 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:03,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1360901373, now seen corresponding path program 1 times [2024-11-28 04:04:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:03,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546892914] [2024-11-28 04:04:03,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:03,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:03,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144247233] [2024-11-28 04:04:03,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:03,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:03,303 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:03,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:04:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:03,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:04:03,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:03,490 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 [2024-11-28 04:04:03,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:04:03,740 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 13 [2024-11-28 04:04:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:03,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:04,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546892914] [2024-11-28 04:04:04,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144247233] [2024-11-28 04:04:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144247233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:04,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-28 04:04:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652659034] [2024-11-28 04:04:04,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:04,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:04:04,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:04,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:04:04,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:04:04,099 INFO L87 Difference]: Start difference. First operand 271 states and 325 transitions. Second operand has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:05,307 INFO L93 Difference]: Finished difference Result 291 states and 345 transitions. [2024-11-28 04:04:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:04:05,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-11-28 04:04:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:05,309 INFO L225 Difference]: With dead ends: 291 [2024-11-28 04:04:05,309 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 04:04:05,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:05,310 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 372 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:05,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1121 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:04:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 04:04:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2024-11-28 04:04:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.5) internal successors, (294), 251 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 322 transitions. [2024-11-28 04:04:05,343 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 322 transitions. Word has length 52 [2024-11-28 04:04:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:05,343 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 322 transitions. [2024-11-28 04:04:05,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 322 transitions. [2024-11-28 04:04:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:04:05,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:05,344 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-28 04:04:05,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:04:05,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:04:05,545 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:05,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 761730442, now seen corresponding path program 1 times [2024-11-28 04:04:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036860773] [2024-11-28 04:04:05,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342281230] [2024-11-28 04:04:05,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:05,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:05,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:05,590 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:05,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:04:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:05,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:04:05,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:05,748 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 [2024-11-28 04:04:05,864 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 [2024-11-28 04:04:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:05,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:06,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036860773] [2024-11-28 04:04:06,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342281230] [2024-11-28 04:04:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342281230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:06,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:06,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:04:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113766267] [2024-11-28 04:04:06,504 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:06,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:04:06,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:06,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:04:06,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:04:06,505 INFO L87 Difference]: Start difference. First operand 270 states and 322 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:06,888 INFO L93 Difference]: Finished difference Result 317 states and 349 transitions. [2024-11-28 04:04:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:04:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-11-28 04:04:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:06,890 INFO L225 Difference]: With dead ends: 317 [2024-11-28 04:04:06,890 INFO L226 Difference]: Without dead ends: 316 [2024-11-28 04:04:06,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:04:06,891 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 222 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:06,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 790 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-28 04:04:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 270. [2024-11-28 04:04:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.4948979591836735) internal successors, (293), 251 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 321 transitions. [2024-11-28 04:04:06,907 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 321 transitions. Word has length 53 [2024-11-28 04:04:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:06,907 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 321 transitions. [2024-11-28 04:04:06,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 321 transitions. [2024-11-28 04:04:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:04:06,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:06,908 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-28 04:04:06,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:07,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:07,113 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:07,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2138807269, now seen corresponding path program 1 times [2024-11-28 04:04:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:07,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793289762] [2024-11-28 04:04:07,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7571161] [2024-11-28 04:04:07,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:07,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:07,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:07,144 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:04:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:07,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:04:07,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:07,322 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 [2024-11-28 04:04:07,471 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 36 treesize of output 13 [2024-11-28 04:04:07,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-28 04:04:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:26,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793289762] [2024-11-28 04:04:26,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7571161] [2024-11-28 04:04:26,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7571161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:26,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:26,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-28 04:04:26,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643155295] [2024-11-28 04:04:26,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:26,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:04:26,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:26,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:04:26,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=305, Unknown=4, NotChecked=0, Total=380 [2024-11-28 04:04:26,410 INFO L87 Difference]: Start difference. First operand 270 states and 321 transitions. Second operand has 20 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:30,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:04:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:32,392 INFO L93 Difference]: Finished difference Result 290 states and 341 transitions. [2024-11-28 04:04:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:04:32,393 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-11-28 04:04:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:32,394 INFO L225 Difference]: With dead ends: 290 [2024-11-28 04:04:32,395 INFO L226 Difference]: Without dead ends: 289 [2024-11-28 04:04:32,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=224, Invalid=702, Unknown=4, NotChecked=0, Total=930 [2024-11-28 04:04:32,396 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 388 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:32,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 997 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 584 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 04:04:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-28 04:04:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 269. [2024-11-28 04:04:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 196 states have (on average 1.4795918367346939) internal successors, (290), 250 states have internal predecessors, (290), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 318 transitions. [2024-11-28 04:04:32,415 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 318 transitions. Word has length 54 [2024-11-28 04:04:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:32,416 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 318 transitions. [2024-11-28 04:04:32,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 318 transitions. [2024-11-28 04:04:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:04:32,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:32,417 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:32,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:32,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:32,621 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:32,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1878515948, now seen corresponding path program 1 times [2024-11-28 04:04:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:32,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941118156] [2024-11-28 04:04:32,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:32,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:32,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260991703] [2024-11-28 04:04:32,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:32,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:32,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:32,658 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:32,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:04:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:32,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 04:04:32,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:32,856 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 [2024-11-28 04:04:32,862 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 [2024-11-28 04:04:33,157 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 [2024-11-28 04:04:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:33,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941118156] [2024-11-28 04:04:34,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260991703] [2024-11-28 04:04:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260991703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:34,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:04:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202009749] [2024-11-28 04:04:34,150 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:34,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:04:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:34,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:04:34,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:04:34,151 INFO L87 Difference]: Start difference. First operand 269 states and 318 transitions. Second operand has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:34,852 INFO L93 Difference]: Finished difference Result 314 states and 345 transitions. [2024-11-28 04:04:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:04:34,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-28 04:04:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:34,855 INFO L225 Difference]: With dead ends: 314 [2024-11-28 04:04:34,855 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 04:04:34,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:34,856 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 212 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:34,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1027 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:04:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 04:04:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 269. [2024-11-28 04:04:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 250 states have internal predecessors, (289), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 317 transitions. [2024-11-28 04:04:34,881 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 317 transitions. Word has length 55 [2024-11-28 04:04:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:34,882 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 317 transitions. [2024-11-28 04:04:34,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 317 transitions. [2024-11-28 04:04:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:04:34,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:34,883 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:04:34,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:35,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:04:35,087 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:35,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1895547705, now seen corresponding path program 1 times [2024-11-28 04:04:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465344083] [2024-11-28 04:04:35,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:35,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583589189] [2024-11-28 04:04:35,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:35,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:35,130 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:04:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:35,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 04:04:35,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:35,316 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 [2024-11-28 04:04:35,322 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 [2024-11-28 04:04:35,640 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 [2024-11-28 04:04:35,796 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 [2024-11-28 04:04:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:36,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:36,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465344083] [2024-11-28 04:04:36,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583589189] [2024-11-28 04:04:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583589189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:36,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-11-28 04:04:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088942202] [2024-11-28 04:04:36,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:36,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:04:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:36,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:04:36,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:04:36,950 INFO L87 Difference]: Start difference. First operand 269 states and 317 transitions. Second operand has 29 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 25 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:40,025 INFO L93 Difference]: Finished difference Result 312 states and 344 transitions. [2024-11-28 04:04:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:04:40,025 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 25 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-28 04:04:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:40,027 INFO L225 Difference]: With dead ends: 312 [2024-11-28 04:04:40,027 INFO L226 Difference]: Without dead ends: 307 [2024-11-28 04:04:40,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:04:40,029 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 694 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:40,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1238 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:04:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-28 04:04:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 266. [2024-11-28 04:04:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 196 states have (on average 1.4387755102040816) internal successors, (282), 247 states have internal predecessors, (282), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 310 transitions. [2024-11-28 04:04:40,051 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 310 transitions. Word has length 56 [2024-11-28 04:04:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:40,051 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 310 transitions. [2024-11-28 04:04:40,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 25 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 310 transitions. [2024-11-28 04:04:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:04:40,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:40,052 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:40,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:04:40,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:40,257 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:40,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:40,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1116085808, now seen corresponding path program 1 times [2024-11-28 04:04:40,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:40,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859832540] [2024-11-28 04:04:40,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:04:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:40,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859832540] [2024-11-28 04:04:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859832540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:40,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:40,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:04:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833122780] [2024-11-28 04:04:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:40,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:04:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:40,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:04:40,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:40,466 INFO L87 Difference]: Start difference. First operand 266 states and 310 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:40,815 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2024-11-28 04:04:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:04:40,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-11-28 04:04:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:40,818 INFO L225 Difference]: With dead ends: 289 [2024-11-28 04:04:40,819 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 04:04:40,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:40,820 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 56 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:40,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 453 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 04:04:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 267. [2024-11-28 04:04:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 197 states have (on average 1.4365482233502538) internal successors, (283), 248 states have internal predecessors, (283), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 311 transitions. [2024-11-28 04:04:40,843 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 311 transitions. Word has length 58 [2024-11-28 04:04:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:40,843 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 311 transitions. [2024-11-28 04:04:40,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 311 transitions. [2024-11-28 04:04:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:04:40,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:40,844 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:04:40,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:04:40,844 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:40,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash -555209303, now seen corresponding path program 1 times [2024-11-28 04:04:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504188891] [2024-11-28 04:04:40,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504188891] [2024-11-28 04:04:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504188891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103673000] [2024-11-28 04:04:41,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:41,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:41,340 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:04:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:41,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:04:41,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:41,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:04:41,781 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 [2024-11-28 04:04:41,825 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 [2024-11-28 04:04:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:41,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:42,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103673000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:42,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:42,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 20 [2024-11-28 04:04:42,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130083084] [2024-11-28 04:04:42,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:42,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:04:42,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:42,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:04:42,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:42,072 INFO L87 Difference]: Start difference. First operand 267 states and 311 transitions. Second operand has 21 states, 18 states have (on average 7.666666666666667) internal successors, (138), 17 states have internal predecessors, (138), 8 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:42,788 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2024-11-28 04:04:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:04:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.666666666666667) internal successors, (138), 17 states have internal predecessors, (138), 8 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-11-28 04:04:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:42,790 INFO L225 Difference]: With dead ends: 285 [2024-11-28 04:04:42,790 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 04:04:42,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:04:42,791 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 451 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:42,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 881 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:04:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 04:04:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 266. [2024-11-28 04:04:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 197 states have (on average 1.4213197969543148) internal successors, (280), 247 states have internal predecessors, (280), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 308 transitions. [2024-11-28 04:04:42,814 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 308 transitions. Word has length 58 [2024-11-28 04:04:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:42,815 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 308 transitions. [2024-11-28 04:04:42,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.666666666666667) internal successors, (138), 17 states have internal predecessors, (138), 8 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 308 transitions. [2024-11-28 04:04:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:04:42,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:42,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:42,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:04:43,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:43,020 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:43,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash 238921827, now seen corresponding path program 1 times [2024-11-28 04:04:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:43,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457150492] [2024-11-28 04:04:43,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:43,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:43,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930681423] [2024-11-28 04:04:43,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:43,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:43,046 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:43,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:04:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:43,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:04:43,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:43,240 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 [2024-11-28 04:04:43,245 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 [2024-11-28 04:04:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:43,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457150492] [2024-11-28 04:04:43,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930681423] [2024-11-28 04:04:43,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930681423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:43,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:43,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:04:43,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075972097] [2024-11-28 04:04:43,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:43,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:04:43,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:43,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:04:43,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:43,573 INFO L87 Difference]: Start difference. First operand 266 states and 308 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:43,926 INFO L93 Difference]: Finished difference Result 292 states and 333 transitions. [2024-11-28 04:04:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:04:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-11-28 04:04:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:43,928 INFO L225 Difference]: With dead ends: 292 [2024-11-28 04:04:43,929 INFO L226 Difference]: Without dead ends: 291 [2024-11-28 04:04:43,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:04:43,929 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 135 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:43,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 446 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-28 04:04:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 267. [2024-11-28 04:04:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 198 states have (on average 1.4191919191919191) internal successors, (281), 248 states have internal predecessors, (281), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 309 transitions. [2024-11-28 04:04:43,950 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 309 transitions. Word has length 59 [2024-11-28 04:04:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:43,950 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 309 transitions. [2024-11-28 04:04:43,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 309 transitions. [2024-11-28 04:04:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:04:43,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:43,952 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:04:43,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:44,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:44,153 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_25_to_33_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:44,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash -31619152, now seen corresponding path program 1 times [2024-11-28 04:04:44,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:44,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726957004] [2024-11-28 04:04:44,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:44,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726957004] [2024-11-28 04:04:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726957004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840496797] [2024-11-28 04:04:44,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:44,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:44,605 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:44,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:04:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:44,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:04:44,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:44,803 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 [2024-11-28 04:04:45,048 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 36 treesize of output 13 [2024-11-28 04:04:45,100 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 [2024-11-28 04:04:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:45,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840496797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:45,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-11-28 04:04:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991118332] [2024-11-28 04:04:45,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:45,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:04:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:45,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:04:45,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:45,386 INFO L87 Difference]: Start difference. First operand 267 states and 309 transitions. Second operand has 21 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:46,122 INFO L93 Difference]: Finished difference Result 327 states and 338 transitions. [2024-11-28 04:04:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:04:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-28 04:04:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:46,124 INFO L225 Difference]: With dead ends: 327 [2024-11-28 04:04:46,124 INFO L226 Difference]: Without dead ends: 326 [2024-11-28 04:04:46,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:04:46,125 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 458 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:46,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1062 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:04:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-28 04:04:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 267. [2024-11-28 04:04:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 198 states have (on average 1.4090909090909092) internal successors, (279), 248 states have internal predecessors, (279), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2024-11-28 04:04:46,149 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 59 [2024-11-28 04:04:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:46,149 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2024-11-28 04:04:46,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2024-11-28 04:04:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:04:46,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:46,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:46,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:46,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:04:46,351 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:46,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1183357806, now seen corresponding path program 1 times [2024-11-28 04:04:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855746474] [2024-11-28 04:04:46,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:04:46,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855746474] [2024-11-28 04:04:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855746474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:46,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:04:46,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329836146] [2024-11-28 04:04:46,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:46,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:46,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:46,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:46,514 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:46,745 INFO L93 Difference]: Finished difference Result 289 states and 330 transitions. [2024-11-28 04:04:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:04:46,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-11-28 04:04:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:46,748 INFO L225 Difference]: With dead ends: 289 [2024-11-28 04:04:46,748 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 04:04:46,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:46,749 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 48 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:46,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 327 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 04:04:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 273. [2024-11-28 04:04:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 204 states have (on average 1.3970588235294117) internal successors, (285), 254 states have internal predecessors, (285), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 313 transitions. [2024-11-28 04:04:46,771 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 313 transitions. Word has length 60 [2024-11-28 04:04:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:46,771 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 313 transitions. [2024-11-28 04:04:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 313 transitions. [2024-11-28 04:04:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:04:46,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:46,772 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:04:46,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 04:04:46,772 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_25_to_33_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:46,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:46,773 INFO L85 PathProgramCache]: Analyzing trace with hash -980193653, now seen corresponding path program 1 times [2024-11-28 04:04:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:46,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960347797] [2024-11-28 04:04:46,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751381795] [2024-11-28 04:04:46,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:46,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:46,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:46,801 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:46,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:04:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:47,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:04:47,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:47,012 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 [2024-11-28 04:04:47,153 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 [2024-11-28 04:04:47,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:04:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:47,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960347797] [2024-11-28 04:04:47,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:04:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751381795] [2024-11-28 04:04:47,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751381795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:47,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:47,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-28 04:04:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536614985] [2024-11-28 04:04:47,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:47,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:04:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:47,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:04:47,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:04:47,588 INFO L87 Difference]: Start difference. First operand 273 states and 313 transitions. Second operand has 17 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:51,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:04:53,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:04:55,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:04:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:55,999 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2024-11-28 04:04:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:04:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2024-11-28 04:04:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:56,002 INFO L225 Difference]: With dead ends: 277 [2024-11-28 04:04:56,002 INFO L226 Difference]: Without dead ends: 276 [2024-11-28 04:04:56,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:56,003 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 395 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:56,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 899 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 513 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 04:04:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-28 04:04:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2024-11-28 04:04:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 204 states have (on average 1.3823529411764706) internal successors, (282), 253 states have internal predecessors, (282), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:04:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 310 transitions. [2024-11-28 04:04:56,023 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 310 transitions. Word has length 60 [2024-11-28 04:04:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:56,023 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 310 transitions. [2024-11-28 04:04:56,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 310 transitions. [2024-11-28 04:04:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:04:56,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:56,028 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:04:56,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:04:56,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:56,232 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:04:56,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -321232110, now seen corresponding path program 1 times [2024-11-28 04:04:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:56,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43237740] [2024-11-28 04:04:56,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:56,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:56,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086444572] [2024-11-28 04:04:56,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:56,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:56,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:56,261 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:56,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:04:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:56,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:04:56,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:56,449 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 [2024-11-28 04:04:56,572 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 [2024-11-28 04:04:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:56,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43237740] [2024-11-28 04:05:01,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086444572] [2024-11-28 04:05:01,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086444572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:01,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:05:01,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:05:01,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316471998] [2024-11-28 04:05:01,185 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:01,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:05:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:01,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:05:01,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-28 04:05:01,186 INFO L87 Difference]: Start difference. First operand 272 states and 310 transitions. Second operand has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:01,622 INFO L93 Difference]: Finished difference Result 294 states and 321 transitions. [2024-11-28 04:05:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:05:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2024-11-28 04:05:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:01,624 INFO L225 Difference]: With dead ends: 294 [2024-11-28 04:05:01,624 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 04:05:01,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-28 04:05:01,625 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 160 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:01,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 848 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:05:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 04:05:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 272. [2024-11-28 04:05:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 204 states have (on average 1.3774509803921569) internal successors, (281), 253 states have internal predecessors, (281), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 309 transitions. [2024-11-28 04:05:01,644 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 309 transitions. Word has length 61 [2024-11-28 04:05:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:01,645 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 309 transitions. [2024-11-28 04:05:01,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 309 transitions. [2024-11-28 04:05:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:05:01,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:01,646 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:05:01,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:01,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:05:01,850 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:01,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1368260755, now seen corresponding path program 1 times [2024-11-28 04:05:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:01,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017545144] [2024-11-28 04:05:01,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:01,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226774248] [2024-11-28 04:05:01,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:01,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:01,877 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:01,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:05:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:02,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:05:02,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:02,085 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 [2024-11-28 04:05:02,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:05:02,347 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 13 [2024-11-28 04:05:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:02,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 5 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:26,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017545144] [2024-11-28 04:05:26,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226774248] [2024-11-28 04:05:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226774248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:26,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:26,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-28 04:05:26,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726362820] [2024-11-28 04:05:26,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:26,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:05:26,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:26,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:05:26,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=304, Unknown=5, NotChecked=0, Total=380 [2024-11-28 04:05:26,860 INFO L87 Difference]: Start difference. First operand 272 states and 309 transitions. Second operand has 20 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:28,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:28,165 INFO L93 Difference]: Finished difference Result 276 states and 313 transitions. [2024-11-28 04:05:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:05:28,166 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2024-11-28 04:05:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:28,166 INFO L225 Difference]: With dead ends: 276 [2024-11-28 04:05:28,166 INFO L226 Difference]: Without dead ends: 275 [2024-11-28 04:05:28,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=224, Invalid=701, Unknown=5, NotChecked=0, Total=930 [2024-11-28 04:05:28,167 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 399 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:28,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 797 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:05:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-28 04:05:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-11-28 04:05:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 204 states have (on average 1.3627450980392157) internal successors, (278), 252 states have internal predecessors, (278), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 306 transitions. [2024-11-28 04:05:28,191 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 306 transitions. Word has length 62 [2024-11-28 04:05:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:28,191 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 306 transitions. [2024-11-28 04:05:28,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 306 transitions. [2024-11-28 04:05:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:05:28,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:28,193 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:05:28,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 04:05:28,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-28 04:05:28,394 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:28,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash 533589620, now seen corresponding path program 1 times [2024-11-28 04:05:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874699534] [2024-11-28 04:05:28,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247022353] [2024-11-28 04:05:28,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:28,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:28,419 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:28,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:05:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:28,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:05:28,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:28,607 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 [2024-11-28 04:05:28,727 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 [2024-11-28 04:05:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:28,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:29,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874699534] [2024-11-28 04:05:29,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247022353] [2024-11-28 04:05:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247022353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:29,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:05:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:05:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40116654] [2024-11-28 04:05:29,724 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:29,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:05:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:29,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:05:29,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:05:29,725 INFO L87 Difference]: Start difference. First operand 271 states and 306 transitions. Second operand has 12 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:30,148 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-11-28 04:05:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:05:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-28 04:05:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:30,150 INFO L225 Difference]: With dead ends: 291 [2024-11-28 04:05:30,150 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 04:05:30,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:05:30,150 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 167 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:30,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 840 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:05:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 04:05:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 271. [2024-11-28 04:05:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 204 states have (on average 1.357843137254902) internal successors, (277), 252 states have internal predecessors, (277), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2024-11-28 04:05:30,170 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 63 [2024-11-28 04:05:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:30,171 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2024-11-28 04:05:30,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2024-11-28 04:05:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:05:30,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:30,172 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:05:30,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:05:30,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 04:05:30,372 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_25_to_33_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:30,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash -638590897, now seen corresponding path program 1 times [2024-11-28 04:05:30,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098648453] [2024-11-28 04:05:30,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:30,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892782906] [2024-11-28 04:05:30,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:30,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:30,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:30,410 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:30,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:05:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:30,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 04:05:30,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:30,626 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 [2024-11-28 04:05:30,631 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 [2024-11-28 04:05:30,899 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 [2024-11-28 04:05:31,027 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 [2024-11-28 04:05:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:31,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:33,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098648453] [2024-11-28 04:05:33,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892782906] [2024-11-28 04:05:33,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892782906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:33,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:33,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2024-11-28 04:05:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175852830] [2024-11-28 04:05:33,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:33,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:05:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:33,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:05:33,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:05:33,116 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 36 states, 33 states have (on average 3.606060606060606) internal successors, (119), 32 states have internal predecessors, (119), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:41,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:05:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:49,112 INFO L93 Difference]: Finished difference Result 308 states and 322 transitions. [2024-11-28 04:05:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:05:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 3.606060606060606) internal successors, (119), 32 states have internal predecessors, (119), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-28 04:05:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:49,113 INFO L225 Difference]: With dead ends: 308 [2024-11-28 04:05:49,113 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 04:05:49,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=669, Invalid=3491, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 04:05:49,115 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 619 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:49,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1676 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1775 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2024-11-28 04:05:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 04:05:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 271. [2024-11-28 04:05:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 204 states have (on average 1.3431372549019607) internal successors, (274), 252 states have internal predecessors, (274), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 302 transitions. [2024-11-28 04:05:49,139 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 302 transitions. Word has length 64 [2024-11-28 04:05:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:49,139 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 302 transitions. [2024-11-28 04:05:49,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 3.606060606060606) internal successors, (119), 32 states have internal predecessors, (119), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 302 transitions. [2024-11-28 04:05:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:05:49,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:49,141 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:49,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:49,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 04:05:49,345 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:49,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1458907208, now seen corresponding path program 1 times [2024-11-28 04:05:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:49,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847415759] [2024-11-28 04:05:49,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:49,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488609580] [2024-11-28 04:05:49,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:49,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:49,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:49,380 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:49,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:05:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:49,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:05:49,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:49,558 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 [2024-11-28 04:05:49,563 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 [2024-11-28 04:05:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:50,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:05:50,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847415759] [2024-11-28 04:05:50,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488609580] [2024-11-28 04:05:50,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488609580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:50,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:05:50,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:05:50,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978906642] [2024-11-28 04:05:50,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:50,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:05:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:50,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:05:50,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:05:50,031 INFO L87 Difference]: Start difference. First operand 271 states and 302 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:05:50,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:50,477 INFO L93 Difference]: Finished difference Result 283 states and 313 transitions. [2024-11-28 04:05:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:05:50,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2024-11-28 04:05:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:50,479 INFO L225 Difference]: With dead ends: 283 [2024-11-28 04:05:50,479 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 04:05:50,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:05:50,480 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 102 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:50,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 426 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:05:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 04:05:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 273. [2024-11-28 04:05:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 206 states have (on average 1.3398058252427185) internal successors, (276), 254 states have internal predecessors, (276), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 304 transitions. [2024-11-28 04:05:50,494 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 304 transitions. Word has length 66 [2024-11-28 04:05:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:50,495 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 304 transitions. [2024-11-28 04:05:50,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:05:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 304 transitions. [2024-11-28 04:05:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:05:50,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:50,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:50,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 04:05:50,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 04:05:50,696 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:50,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash 494473521, now seen corresponding path program 1 times [2024-11-28 04:05:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552230254] [2024-11-28 04:05:50,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:50,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5525042] [2024-11-28 04:05:50,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:50,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:50,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:50,721 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:50,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 04:05:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:50,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:05:50,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:50,919 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 [2024-11-28 04:05:51,045 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 [2024-11-28 04:05:51,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:05:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:51,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552230254] [2024-11-28 04:05:51,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5525042] [2024-11-28 04:05:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5525042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:51,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-28 04:05:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715325988] [2024-11-28 04:05:51,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:51,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:05:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:51,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:05:51,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:05:51,379 INFO L87 Difference]: Start difference. First operand 273 states and 304 transitions. Second operand has 15 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:51,847 INFO L93 Difference]: Finished difference Result 273 states and 304 transitions. [2024-11-28 04:05:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:05:51,847 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2024-11-28 04:05:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:51,849 INFO L225 Difference]: With dead ends: 273 [2024-11-28 04:05:51,849 INFO L226 Difference]: Without dead ends: 272 [2024-11-28 04:05:51,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 113 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:05:51,850 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 362 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:51,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 713 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:05:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-28 04:05:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-28 04:05:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 206 states have (on average 1.325242718446602) internal successors, (273), 253 states have internal predecessors, (273), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2024-11-28 04:05:51,876 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 66 [2024-11-28 04:05:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:51,877 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2024-11-28 04:05:51,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2024-11-28 04:05:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:05:51,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:51,879 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:51,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 04:05:52,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:52,080 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting func_to_recursive_line_25_to_33_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:52,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1851189960, now seen corresponding path program 1 times [2024-11-28 04:05:52,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:52,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673226949] [2024-11-28 04:05:52,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:52,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337405856] [2024-11-28 04:05:52,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:52,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:52,113 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:52,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 04:05:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:52,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:05:52,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:52,314 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 [2024-11-28 04:05:52,527 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 [2024-11-28 04:05:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:52,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:53,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673226949] [2024-11-28 04:05:53,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337405856] [2024-11-28 04:05:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337405856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:53,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2024-11-28 04:05:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826608541] [2024-11-28 04:05:53,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:53,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:05:53,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:53,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:05:53,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:05:53,260 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 20 states, 17 states have (on average 7.352941176470588) internal successors, (125), 15 states have internal predecessors, (125), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:54,712 INFO L93 Difference]: Finished difference Result 303 states and 314 transitions. [2024-11-28 04:05:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:05:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.352941176470588) internal successors, (125), 15 states have internal predecessors, (125), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2024-11-28 04:05:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:54,714 INFO L225 Difference]: With dead ends: 303 [2024-11-28 04:05:54,715 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 04:05:54,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:05:54,715 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 364 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:54,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1145 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:05:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 04:05:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 272. [2024-11-28 04:05:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 206 states have (on average 1.3155339805825244) internal successors, (271), 253 states have internal predecessors, (271), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 299 transitions. [2024-11-28 04:05:54,741 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 299 transitions. Word has length 67 [2024-11-28 04:05:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:54,741 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 299 transitions. [2024-11-28 04:05:54,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.352941176470588) internal successors, (125), 15 states have internal predecessors, (125), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 299 transitions. [2024-11-28 04:05:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:05:54,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:54,742 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:54,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 04:05:54,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 04:05:54,943 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:54,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1850483174, now seen corresponding path program 1 times [2024-11-28 04:05:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927281886] [2024-11-28 04:05:54,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657204822] [2024-11-28 04:05:54,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:54,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:54,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:54,967 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:54,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 04:05:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:55,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:05:55,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:55,159 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 [2024-11-28 04:05:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:55,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:05:55,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927281886] [2024-11-28 04:05:55,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657204822] [2024-11-28 04:05:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657204822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:05:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:05:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210936911] [2024-11-28 04:05:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:55,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:05:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:55,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:05:55,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:05:55,313 INFO L87 Difference]: Start difference. First operand 272 states and 299 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:05:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:55,616 INFO L93 Difference]: Finished difference Result 280 states and 306 transitions. [2024-11-28 04:05:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:05:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-28 04:05:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:55,618 INFO L225 Difference]: With dead ends: 280 [2024-11-28 04:05:55,618 INFO L226 Difference]: Without dead ends: 278 [2024-11-28 04:05:55,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:05:55,619 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 69 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:55,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 433 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 7 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:05:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-28 04:05:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2024-11-28 04:05:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 208 states have (on average 1.3125) internal successors, (273), 255 states have internal predecessors, (273), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:05:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 301 transitions. [2024-11-28 04:05:55,646 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 301 transitions. Word has length 68 [2024-11-28 04:05:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:55,646 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 301 transitions. [2024-11-28 04:05:55,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:05:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 301 transitions. [2024-11-28 04:05:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:05:55,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:55,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:55,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:55,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 04:05:55,848 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting func_to_recursive_line_25_to_33_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:05:55,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1552313837, now seen corresponding path program 1 times [2024-11-28 04:05:55,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:55,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709620080] [2024-11-28 04:05:55,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:55,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:05:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168108792] [2024-11-28 04:05:55,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:55,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:55,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:55,877 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:55,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 04:05:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:56,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 04:05:56,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:56,116 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 [2024-11-28 04:05:56,122 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 [2024-11-28 04:05:56,128 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 [2024-11-28 04:05:56,551 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 [2024-11-28 04:05:56,714 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 [2024-11-28 04:05:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:57,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:06:15,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709620080] [2024-11-28 04:06:15,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:06:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168108792] [2024-11-28 04:06:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168108792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:15,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:06:15,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-28 04:06:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430686069] [2024-11-28 04:06:15,731 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:06:15,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:06:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:15,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:06:15,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=872, Unknown=4, NotChecked=0, Total=992 [2024-11-28 04:06:15,732 INFO L87 Difference]: Start difference. First operand 274 states and 301 transitions. Second operand has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:06:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:18,104 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2024-11-28 04:06:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:06:18,105 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2024-11-28 04:06:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:18,106 INFO L225 Difference]: With dead ends: 281 [2024-11-28 04:06:18,106 INFO L226 Difference]: Without dead ends: 280 [2024-11-28 04:06:18,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=248, Invalid=1388, Unknown=4, NotChecked=0, Total=1640 [2024-11-28 04:06:18,107 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 150 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:18,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 922 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:06:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-28 04:06:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 274. [2024-11-28 04:06:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 208 states have (on average 1.3076923076923077) internal successors, (272), 255 states have internal predecessors, (272), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:06:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 300 transitions. [2024-11-28 04:06:18,133 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 300 transitions. Word has length 68 [2024-11-28 04:06:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:18,134 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 300 transitions. [2024-11-28 04:06:18,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:06:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 300 transitions. [2024-11-28 04:06:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:06:18,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:18,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:18,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 04:06:18,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 04:06:18,336 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:06:18,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -877088614, now seen corresponding path program 1 times [2024-11-28 04:06:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:18,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560371994] [2024-11-28 04:06:18,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:06:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560472013] [2024-11-28 04:06:18,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:18,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:18,374 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:18,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 04:06:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:18,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 04:06:18,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:18,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:06:18,592 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 [2024-11-28 04:06:18,950 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 [2024-11-28 04:06:19,063 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 22 treesize of output 14 [2024-11-28 04:06:19,217 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 18 treesize of output 10 [2024-11-28 04:06:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:06:26,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560371994] [2024-11-28 04:08:12,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:08:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560472013] [2024-11-28 04:08:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560472013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:12,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-28 04:08:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146484202] [2024-11-28 04:08:12,583 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:12,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:08:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:12,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:08:12,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=553, Unknown=20, NotChecked=0, Total=702 [2024-11-28 04:08:12,584 INFO L87 Difference]: Start difference. First operand 274 states and 300 transitions. Second operand has 16 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:08:18,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:08:31,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:31,478 INFO L93 Difference]: Finished difference Result 280 states and 303 transitions. [2024-11-28 04:08:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:08:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2024-11-28 04:08:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:31,480 INFO L225 Difference]: With dead ends: 280 [2024-11-28 04:08:31,480 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 04:08:31,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 124.7s TimeCoverageRelationStatistics Valid=253, Invalid=914, Unknown=23, NotChecked=0, Total=1190 [2024-11-28 04:08:31,481 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 117 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:31,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 934 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 596 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2024-11-28 04:08:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 04:08:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 274. [2024-11-28 04:08:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 208 states have (on average 1.3028846153846154) internal successors, (271), 255 states have internal predecessors, (271), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:08:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 299 transitions. [2024-11-28 04:08:31,507 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 299 transitions. Word has length 69 [2024-11-28 04:08:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:31,507 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 299 transitions. [2024-11-28 04:08:31,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:08:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 299 transitions. [2024-11-28 04:08:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:08:31,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:31,508 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:31,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:31,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 04:08:31,709 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:08:31,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -197864324, now seen corresponding path program 1 times [2024-11-28 04:08:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:31,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643673415] [2024-11-28 04:08:31,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:08:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656116922] [2024-11-28 04:08:31,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:31,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:31,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:31,733 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:31,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 04:08:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:31,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:08:31,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:31,945 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 [2024-11-28 04:08:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:32,436 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643673415] [2024-11-28 04:08:32,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:08:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656116922] [2024-11-28 04:08:32,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656116922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:32,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:08:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588891704] [2024-11-28 04:08:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:32,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:08:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:32,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:08:32,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:08:32,438 INFO L87 Difference]: Start difference. First operand 274 states and 299 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:08:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:32,914 INFO L93 Difference]: Finished difference Result 278 states and 302 transitions. [2024-11-28 04:08:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:08:32,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 70 [2024-11-28 04:08:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:32,916 INFO L225 Difference]: With dead ends: 278 [2024-11-28 04:08:32,916 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 04:08:32,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:08:32,917 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 66 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:32,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 344 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 165 Invalid, 7 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:08:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 04:08:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2024-11-28 04:08:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 209 states have (on average 1.3014354066985645) internal successors, (272), 256 states have internal predecessors, (272), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 04:08:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 300 transitions. [2024-11-28 04:08:32,935 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 300 transitions. Word has length 70 [2024-11-28 04:08:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:32,935 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 300 transitions. [2024-11-28 04:08:32,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:08:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 300 transitions. [2024-11-28 04:08:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:08:32,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:32,936 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:32,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:33,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 04:08:33,137 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:08:33,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1838826577, now seen corresponding path program 1 times [2024-11-28 04:08:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546244637] [2024-11-28 04:08:33,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:33,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:08:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822818026] [2024-11-28 04:08:33,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:33,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:33,162 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:33,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 04:08:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:33,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:08:33,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:33,375 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 [2024-11-28 04:08:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:33,766 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546244637] [2024-11-28 04:08:33,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:08:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822818026] [2024-11-28 04:08:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822818026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:33,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:08:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986384269] [2024-11-28 04:08:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:33,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:08:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:33,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:08:33,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:08:33,768 INFO L87 Difference]: Start difference. First operand 275 states and 300 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:08:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:34,358 INFO L93 Difference]: Finished difference Result 277 states and 301 transitions. [2024-11-28 04:08:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:08:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2024-11-28 04:08:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:34,360 INFO L225 Difference]: With dead ends: 277 [2024-11-28 04:08:34,360 INFO L226 Difference]: Without dead ends: 243 [2024-11-28 04:08:34,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:08:34,361 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 65 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:34,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 480 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:08:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-28 04:08:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-28 04:08:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 179 states have (on average 1.3463687150837989) internal successors, (241), 226 states have internal predecessors, (241), 9 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 04:08:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 266 transitions. [2024-11-28 04:08:34,386 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 266 transitions. Word has length 71 [2024-11-28 04:08:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:34,387 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 266 transitions. [2024-11-28 04:08:34,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:08:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 266 transitions. [2024-11-28 04:08:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:08:34,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:34,388 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:34,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:34,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-28 04:08:34,589 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:08:34,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1572259555, now seen corresponding path program 1 times [2024-11-28 04:08:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:34,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262860579] [2024-11-28 04:08:34,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:34,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:08:34,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:34,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262860579] [2024-11-28 04:08:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262860579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:34,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:34,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:08:34,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450889899] [2024-11-28 04:08:34,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:34,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:08:34,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:34,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:08:34,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:08:34,930 INFO L87 Difference]: Start difference. First operand 243 states and 266 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:08:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:35,153 INFO L93 Difference]: Finished difference Result 243 states and 266 transitions. [2024-11-28 04:08:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:08:35,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 77 [2024-11-28 04:08:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:35,156 INFO L225 Difference]: With dead ends: 243 [2024-11-28 04:08:35,156 INFO L226 Difference]: Without dead ends: 242 [2024-11-28 04:08:35,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:08:35,157 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 77 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:35,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 555 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-28 04:08:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-28 04:08:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 179 states have (on average 1.335195530726257) internal successors, (239), 225 states have internal predecessors, (239), 9 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 04:08:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 264 transitions. [2024-11-28 04:08:35,185 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 264 transitions. Word has length 77 [2024-11-28 04:08:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:35,185 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 264 transitions. [2024-11-28 04:08:35,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:08:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 264 transitions. [2024-11-28 04:08:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:08:35,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:35,186 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:35,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-28 04:08:35,187 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:08:35,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash 605022525, now seen corresponding path program 1 times [2024-11-28 04:08:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:35,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136673956] [2024-11-28 04:08:35,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:08:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538302877] [2024-11-28 04:08:35,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:35,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:35,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:35,217 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:35,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 04:08:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:35,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:08:35,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:35,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:08:35,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:08:35,547 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 [2024-11-28 04:08:36,988 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 13 treesize of output 9 [2024-11-28 04:08:37,184 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 [2024-11-28 04:08:37,222 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 [2024-11-28 04:08:37,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:08:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:08:37,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136673956] [2024-11-28 04:08:37,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:08:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538302877] [2024-11-28 04:08:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538302877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:37,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:08:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618607563] [2024-11-28 04:08:37,898 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:37,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:08:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:37,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:08:37,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:08:37,899 INFO L87 Difference]: Start difference. First operand 242 states and 264 transitions. Second operand has 12 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:08:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:38,547 INFO L93 Difference]: Finished difference Result 254 states and 280 transitions. [2024-11-28 04:08:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:08:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 82 [2024-11-28 04:08:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:38,548 INFO L225 Difference]: With dead ends: 254 [2024-11-28 04:08:38,548 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 04:08:38,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:08:38,549 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:38,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 547 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:08:38,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 04:08:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2024-11-28 04:08:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 181 states have (on average 1.3314917127071824) internal successors, (241), 226 states have internal predecessors, (241), 9 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 04:08:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 266 transitions. [2024-11-28 04:08:38,576 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 266 transitions. Word has length 82 [2024-11-28 04:08:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:38,576 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 266 transitions. [2024-11-28 04:08:38,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:08:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 266 transitions. [2024-11-28 04:08:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:08:38,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:38,578 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:38,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:38,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:38,780 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting func_to_recursive_line_25_to_33_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:08:38,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash 736420376, now seen corresponding path program 1 times [2024-11-28 04:08:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185782070] [2024-11-28 04:08:38,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:08:38,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336189429] [2024-11-28 04:08:38,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:38,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:38,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:38,829 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:38,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 04:08:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:39,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:08:39,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:39,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:08:39,301 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 [2024-11-28 04:08:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:39,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185782070] [2024-11-28 04:08:39,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:08:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336189429] [2024-11-28 04:08:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336189429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:39,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:08:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218305046] [2024-11-28 04:08:39,952 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:39,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:08:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:39,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:08:39,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:08:39,953 INFO L87 Difference]: Start difference. First operand 244 states and 266 transitions. Second operand has 12 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:08:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:40,619 INFO L93 Difference]: Finished difference Result 305 states and 325 transitions. [2024-11-28 04:08:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:08:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2024-11-28 04:08:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:40,621 INFO L225 Difference]: With dead ends: 305 [2024-11-28 04:08:40,621 INFO L226 Difference]: Without dead ends: 304 [2024-11-28 04:08:40,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:08:40,622 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 128 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:40,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 792 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:08:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-28 04:08:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2024-11-28 04:08:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 189 states have (on average 1.3386243386243386) internal successors, (253), 235 states have internal predecessors, (253), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 04:08:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 280 transitions. [2024-11-28 04:08:40,657 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 280 transitions. Word has length 82 [2024-11-28 04:08:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:40,658 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 280 transitions. [2024-11-28 04:08:40,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:08:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 280 transitions. [2024-11-28 04:08:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:08:40,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:40,659 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:40,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:40,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:40,860 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:08:40,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1575829208, now seen corresponding path program 1 times [2024-11-28 04:08:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:40,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076458891] [2024-11-28 04:08:40,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:08:40,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343665845] [2024-11-28 04:08:40,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:40,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:40,894 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:40,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 04:08:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:41,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-28 04:08:41,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:41,212 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 [2024-11-28 04:08:41,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:08:41,224 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 [2024-11-28 04:08:43,457 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 42 treesize of output 19 [2024-11-28 04:08:43,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:09:06,971 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 [2024-11-28 04:09:07,350 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 50 treesize of output 22 [2024-11-28 04:09:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:09:07,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:11,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076458891] [2024-11-28 04:09:11,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:09:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343665845] [2024-11-28 04:09:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343665845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:11,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:09:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-28 04:09:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235272268] [2024-11-28 04:09:11,096 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:11,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:09:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:11,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:09:11,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=481, Unknown=4, NotChecked=0, Total=552 [2024-11-28 04:09:11,098 INFO L87 Difference]: Start difference. First operand 254 states and 280 transitions. Second operand has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:09:15,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:16,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:20,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:24,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:28,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:32,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:36,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:40,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:45,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:49,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:53,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:09:57,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:05,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:10,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:14,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:18,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:33,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:37,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:45,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:49,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:10:57,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:11:01,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:11:05,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:11:05,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:05,665 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-11-28 04:11:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:11:05,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 83 [2024-11-28 04:11:05,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:05,667 INFO L225 Difference]: With dead ends: 258 [2024-11-28 04:11:05,667 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 04:11:05,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=125, Invalid=924, Unknown=7, NotChecked=0, Total=1056 [2024-11-28 04:11:05,668 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 46 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 8 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:05,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1012 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 859 Invalid, 22 Unknown, 0 Unchecked, 96.5s Time] [2024-11-28 04:11:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 04:11:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2024-11-28 04:11:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 189 states have (on average 1.3333333333333333) internal successors, (252), 235 states have internal predecessors, (252), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 04:11:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 279 transitions. [2024-11-28 04:11:05,702 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 279 transitions. Word has length 83 [2024-11-28 04:11:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:05,703 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 279 transitions. [2024-11-28 04:11:05,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 279 transitions. [2024-11-28 04:11:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:11:05,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:05,704 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:05,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-28 04:11:05,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:05,908 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:11:05,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1606065311, now seen corresponding path program 1 times [2024-11-28 04:11:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:05,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842386842] [2024-11-28 04:11:05,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:11:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726173168] [2024-11-28 04:11:05,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:05,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:05,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:05,945 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:05,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 04:11:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:06,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:11:06,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:06,235 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 [2024-11-28 04:11:07,031 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 [2024-11-28 04:11:07,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:11:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:11:07,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:07,599 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 9 treesize of output 5 [2024-11-28 04:11:07,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:07,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842386842] [2024-11-28 04:11:07,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:11:07,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726173168] [2024-11-28 04:11:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726173168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:07,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-28 04:11:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090502865] [2024-11-28 04:11:07,710 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:07,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:11:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:07,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:11:07,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:11:07,711 INFO L87 Difference]: Start difference. First operand 254 states and 279 transitions. Second operand has 10 states, 8 states have (on average 9.125) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:08,241 INFO L93 Difference]: Finished difference Result 254 states and 279 transitions. [2024-11-28 04:11:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:11:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.125) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 84 [2024-11-28 04:11:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:08,243 INFO L225 Difference]: With dead ends: 254 [2024-11-28 04:11:08,243 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 04:11:08,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:11:08,244 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 73 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:08,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 565 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:11:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 04:11:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-28 04:11:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 234 states have internal predecessors, (250), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 04:11:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 277 transitions. [2024-11-28 04:11:08,269 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 277 transitions. Word has length 84 [2024-11-28 04:11:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:08,269 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 277 transitions. [2024-11-28 04:11:08,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.125) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 277 transitions. [2024-11-28 04:11:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:11:08,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:08,270 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:08,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:08,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:08,470 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting func_to_recursive_line_25_to_33_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:11:08,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash -969619398, now seen corresponding path program 1 times [2024-11-28 04:11:08,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:08,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788238794] [2024-11-28 04:11:08,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:11:08,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400069071] [2024-11-28 04:11:08,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:08,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:08,515 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:08,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 04:11:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:08,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:11:08,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:08,822 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 [2024-11-28 04:11:09,085 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 [2024-11-28 04:11:09,444 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 [2024-11-28 04:11:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:09,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:10,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788238794] [2024-11-28 04:11:10,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:11:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400069071] [2024-11-28 04:11:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400069071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:10,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:11:10,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661222905] [2024-11-28 04:11:10,198 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:10,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:11:10,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:10,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:11:10,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:11:10,199 INFO L87 Difference]: Start difference. First operand 253 states and 277 transitions. Second operand has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:11:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:11,462 INFO L93 Difference]: Finished difference Result 302 states and 321 transitions. [2024-11-28 04:11:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:11:11,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2024-11-28 04:11:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:11,465 INFO L225 Difference]: With dead ends: 302 [2024-11-28 04:11:11,465 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 04:11:11,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:11:11,466 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 128 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:11,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1131 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:11:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 04:11:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 253. [2024-11-28 04:11:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 189 states have (on average 1.3174603174603174) internal successors, (249), 234 states have internal predecessors, (249), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 04:11:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 276 transitions. [2024-11-28 04:11:11,500 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 276 transitions. Word has length 84 [2024-11-28 04:11:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:11,500 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 276 transitions. [2024-11-28 04:11:11,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:11:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 276 transitions. [2024-11-28 04:11:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:11:11,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:11,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:11:11,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:11,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-28 04:11:11,702 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:11:11,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1751582790, now seen corresponding path program 1 times [2024-11-28 04:11:11,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:11,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484845471] [2024-11-28 04:11:11,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:11:11,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683554415] [2024-11-28 04:11:11,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:11,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:11,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:11,737 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:11,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 04:11:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:12,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:11:12,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:12,038 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 [2024-11-28 04:11:12,876 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 [2024-11-28 04:11:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:11:12,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484845471] [2024-11-28 04:11:17,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:11:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683554415] [2024-11-28 04:11:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683554415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:17,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:17,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-28 04:11:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909889735] [2024-11-28 04:11:17,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:17,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:11:17,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:17,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:11:17,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2024-11-28 04:11:17,613 INFO L87 Difference]: Start difference. First operand 253 states and 276 transitions. Second operand has 10 states, 8 states have (on average 9.25) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:18,313 INFO L93 Difference]: Finished difference Result 293 states and 313 transitions. [2024-11-28 04:11:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:11:18,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.25) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 85 [2024-11-28 04:11:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:18,315 INFO L225 Difference]: With dead ends: 293 [2024-11-28 04:11:18,315 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 04:11:18,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2024-11-28 04:11:18,316 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 83 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:18,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 593 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:11:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 04:11:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 253. [2024-11-28 04:11:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 189 states have (on average 1.312169312169312) internal successors, (248), 234 states have internal predecessors, (248), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 04:11:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 275 transitions. [2024-11-28 04:11:18,359 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 275 transitions. Word has length 85 [2024-11-28 04:11:18,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:18,360 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 275 transitions. [2024-11-28 04:11:18,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.25) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 275 transitions. [2024-11-28 04:11:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:18,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:18,361 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:11:18,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 04:11:18,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-28 04:11:18,561 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:11:18,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1535508481, now seen corresponding path program 1 times [2024-11-28 04:11:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978041196] [2024-11-28 04:11:18,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:11:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356911329] [2024-11-28 04:11:18,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:18,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:18,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:18,597 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:18,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 04:11:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:18,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:11:18,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:18,922 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 [2024-11-28 04:11:18,934 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 [2024-11-28 04:11:18,948 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 [2024-11-28 04:11:20,658 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 13 treesize of output 9 [2024-11-28 04:11:20,864 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 [2024-11-28 04:11:20,947 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 [2024-11-28 04:11:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:11:21,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:22,272 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 52 treesize of output 48 [2024-11-28 04:11:22,283 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 48 treesize of output 32 [2024-11-28 04:11:22,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978041196] [2024-11-28 04:11:22,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:11:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356911329] [2024-11-28 04:11:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356911329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:22,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:22,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:11:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339427636] [2024-11-28 04:11:22,764 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:22,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:11:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:22,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:11:22,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:11:22,765 INFO L87 Difference]: Start difference. First operand 253 states and 275 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:23,794 INFO L93 Difference]: Finished difference Result 255 states and 276 transitions. [2024-11-28 04:11:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:11:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 86 [2024-11-28 04:11:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:23,796 INFO L225 Difference]: With dead ends: 255 [2024-11-28 04:11:23,796 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 04:11:23,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:11:23,797 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 67 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:23,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 616 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:11:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 04:11:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2024-11-28 04:11:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 189 states have (on average 1.306878306878307) internal successors, (247), 234 states have internal predecessors, (247), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 04:11:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 274 transitions. [2024-11-28 04:11:23,831 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 274 transitions. Word has length 86 [2024-11-28 04:11:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:23,831 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 274 transitions. [2024-11-28 04:11:23,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 274 transitions. [2024-11-28 04:11:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:23,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:23,832 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:23,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:24,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:24,032 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:11:24,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash 203664988, now seen corresponding path program 1 times [2024-11-28 04:11:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:24,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894966136] [2024-11-28 04:11:24,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:24,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:11:24,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245731563] [2024-11-28 04:11:24,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:24,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:24,078 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:24,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 04:11:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:24,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-28 04:11:24,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:24,396 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 [2024-11-28 04:11:24,406 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 [2024-11-28 04:11:24,907 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 [2024-11-28 04:11:25,168 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 [2024-11-28 04:11:25,768 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 [2024-11-28 04:11:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:26,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:11:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894966136] [2024-11-28 04:11:28,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:11:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245731563] [2024-11-28 04:11:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245731563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:28,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:11:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2024-11-28 04:11:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907246265] [2024-11-28 04:11:28,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:28,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:11:28,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:28,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:11:28,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:11:28,794 INFO L87 Difference]: Start difference. First operand 253 states and 274 transitions. Second operand has 30 states, 27 states have (on average 5.777777777777778) internal successors, (156), 26 states have internal predecessors, (156), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:35,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:11:39,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:11:49,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 04:11:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:53,134 INFO L93 Difference]: Finished difference Result 378 states and 394 transitions. [2024-11-28 04:11:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:11:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.777777777777778) internal successors, (156), 26 states have internal predecessors, (156), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 86 [2024-11-28 04:11:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:53,137 INFO L225 Difference]: With dead ends: 378 [2024-11-28 04:11:53,137 INFO L226 Difference]: Without dead ends: 377 [2024-11-28 04:11:53,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=470, Invalid=2182, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:11:53,138 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 445 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 27 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:53,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1572 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 837 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2024-11-28 04:11:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-28 04:11:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 305. [2024-11-28 04:11:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.3248945147679325) internal successors, (314), 283 states have internal predecessors, (314), 12 states have call successors, (12), 8 states have call predecessors, (12), 12 states have return successors, (21), 13 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:11:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 347 transitions. [2024-11-28 04:11:53,172 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 347 transitions. Word has length 86 [2024-11-28 04:11:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:53,172 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 347 transitions. [2024-11-28 04:11:53,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.777777777777778) internal successors, (156), 26 states have internal predecessors, (156), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 347 transitions. [2024-11-28 04:11:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:11:53,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:53,174 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:53,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:53,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:53,375 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:11:53,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash 356122780, now seen corresponding path program 1 times [2024-11-28 04:11:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527970997] [2024-11-28 04:11:53,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:11:53,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502300044] [2024-11-28 04:11:53,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:53,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:53,425 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:53,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 04:11:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:53,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-28 04:11:53,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:53,765 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 [2024-11-28 04:11:53,770 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 [2024-11-28 04:11:53,781 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 [2024-11-28 04:11:56,737 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 [2024-11-28 04:11:56,797 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 [2024-11-28 04:11:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:11:56,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:58,803 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 52 treesize of output 48 [2024-11-28 04:11:58,816 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 48 treesize of output 32 [2024-11-28 04:12:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527970997] [2024-11-28 04:12:03,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:12:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502300044] [2024-11-28 04:12:03,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502300044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:03,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:03,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-28 04:12:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316172203] [2024-11-28 04:12:03,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:03,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:12:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:03,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:12:03,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:12:03,845 INFO L87 Difference]: Start difference. First operand 305 states and 347 transitions. Second operand has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:12:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:05,528 INFO L93 Difference]: Finished difference Result 307 states and 348 transitions. [2024-11-28 04:12:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:12:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 87 [2024-11-28 04:12:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:05,531 INFO L225 Difference]: With dead ends: 307 [2024-11-28 04:12:05,531 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 04:12:05,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:12:05,532 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 56 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:05,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 961 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:12:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 04:12:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2024-11-28 04:12:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.3206751054852321) internal successors, (313), 283 states have internal predecessors, (313), 12 states have call successors, (12), 8 states have call predecessors, (12), 12 states have return successors, (21), 13 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:12:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 346 transitions. [2024-11-28 04:12:05,583 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 346 transitions. Word has length 87 [2024-11-28 04:12:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:05,583 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 346 transitions. [2024-11-28 04:12:05,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:12:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 346 transitions. [2024-11-28 04:12:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:12:05,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:05,586 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:12:05,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:05,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:05,787 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:12:05,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1534552120, now seen corresponding path program 1 times [2024-11-28 04:12:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906590919] [2024-11-28 04:12:05,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:12:05,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794751330] [2024-11-28 04:12:05,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:05,828 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:05,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 04:12:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:06,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-28 04:12:06,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:06,155 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 [2024-11-28 04:12:06,164 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 [2024-11-28 04:12:06,673 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 [2024-11-28 04:12:06,949 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 [2024-11-28 04:12:07,501 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 [2024-11-28 04:12:07,814 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 [2024-11-28 04:12:07,921 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 [2024-11-28 04:12:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:07,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:12:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906590919] [2024-11-28 04:12:09,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:12:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794751330] [2024-11-28 04:12:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794751330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:09,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 35 [2024-11-28 04:12:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440710517] [2024-11-28 04:12:09,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:09,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:12:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:09,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:12:09,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:12:09,925 INFO L87 Difference]: Start difference. First operand 305 states and 346 transitions. Second operand has 36 states, 33 states have (on average 4.96969696969697) internal successors, (164), 30 states have internal predecessors, (164), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:12:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:19,701 INFO L93 Difference]: Finished difference Result 435 states and 452 transitions. [2024-11-28 04:12:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:12:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.96969696969697) internal successors, (164), 30 states have internal predecessors, (164), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 91 [2024-11-28 04:12:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:19,704 INFO L225 Difference]: With dead ends: 435 [2024-11-28 04:12:19,705 INFO L226 Difference]: Without dead ends: 434 [2024-11-28 04:12:19,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=827, Invalid=4143, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:12:19,706 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 1161 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:19,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1778 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 04:12:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-28 04:12:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 337. [2024-11-28 04:12:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 265 states have (on average 1.3283018867924528) internal successors, (352), 312 states have internal predecessors, (352), 14 states have call successors, (14), 9 states have call predecessors, (14), 14 states have return successors, (25), 15 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:12:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 391 transitions. [2024-11-28 04:12:19,768 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 391 transitions. Word has length 91 [2024-11-28 04:12:19,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:19,769 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 391 transitions. [2024-11-28 04:12:19,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.96969696969697) internal successors, (164), 30 states have internal predecessors, (164), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:12:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 391 transitions. [2024-11-28 04:12:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:12:19,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:19,772 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:12:19,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:19,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:19,973 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:12:19,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1530803542, now seen corresponding path program 2 times [2024-11-28 04:12:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377686218] [2024-11-28 04:12:19,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:12:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:20,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:12:20,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:12:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010425697] [2024-11-28 04:12:20,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:12:20,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:20,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:20,033 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:20,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 04:12:20,384 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:12:20,384 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:20,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 04:12:20,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:20,394 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 [2024-11-28 04:12:20,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:12:20,931 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 [2024-11-28 04:12:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:21,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:25,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:25,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377686218] [2024-11-28 04:12:25,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:12:25,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010425697] [2024-11-28 04:12:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010425697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:25,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:25,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:12:25,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742277072] [2024-11-28 04:12:25,921 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:25,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:12:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:25,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:12:25,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2024-11-28 04:12:25,922 INFO L87 Difference]: Start difference. First operand 337 states and 391 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:12:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:27,490 INFO L93 Difference]: Finished difference Result 392 states and 435 transitions. [2024-11-28 04:12:27,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:12:27,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2024-11-28 04:12:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:27,493 INFO L225 Difference]: With dead ends: 392 [2024-11-28 04:12:27,493 INFO L226 Difference]: Without dead ends: 391 [2024-11-28 04:12:27,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=115, Invalid=484, Unknown=1, NotChecked=0, Total=600 [2024-11-28 04:12:27,494 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 215 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:27,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1250 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:12:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-28 04:12:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 337. [2024-11-28 04:12:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 265 states have (on average 1.3245283018867924) internal successors, (351), 312 states have internal predecessors, (351), 14 states have call successors, (14), 9 states have call predecessors, (14), 14 states have return successors, (25), 15 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:12:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 390 transitions. [2024-11-28 04:12:27,535 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 390 transitions. Word has length 93 [2024-11-28 04:12:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:27,535 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 390 transitions. [2024-11-28 04:12:27,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:12:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 390 transitions. [2024-11-28 04:12:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:12:27,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:27,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:12:27,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:27,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:27,737 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:12:27,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1186707834, now seen corresponding path program 1 times [2024-11-28 04:12:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:27,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849527368] [2024-11-28 04:12:27,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:27,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:12:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849527368] [2024-11-28 04:12:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849527368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637026495] [2024-11-28 04:12:28,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:28,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:28,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:28,461 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:28,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 04:12:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:28,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:12:28,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:29,070 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 8 treesize of output 1 [2024-11-28 04:12:29,661 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 [2024-11-28 04:12:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:12:29,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:30,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637026495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:30,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2024-11-28 04:12:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596665819] [2024-11-28 04:12:30,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:30,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:12:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:30,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:12:30,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:12:30,656 INFO L87 Difference]: Start difference. First operand 337 states and 390 transitions. Second operand has 13 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:12:35,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:12:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:35,643 INFO L93 Difference]: Finished difference Result 337 states and 390 transitions. [2024-11-28 04:12:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:12:35,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 94 [2024-11-28 04:12:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:35,647 INFO L225 Difference]: With dead ends: 337 [2024-11-28 04:12:35,647 INFO L226 Difference]: Without dead ends: 336 [2024-11-28 04:12:35,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:12:35,648 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 183 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:35,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 401 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 244 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 04:12:35,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-28 04:12:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-11-28 04:12:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 265 states have (on average 1.320754716981132) internal successors, (350), 311 states have internal predecessors, (350), 14 states have call successors, (14), 9 states have call predecessors, (14), 14 states have return successors, (25), 15 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:12:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 389 transitions. [2024-11-28 04:12:35,706 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 389 transitions. Word has length 94 [2024-11-28 04:12:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:35,707 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 389 transitions. [2024-11-28 04:12:35,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:12:35,707 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 389 transitions. [2024-11-28 04:12:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:12:35,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:35,708 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:12:35,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 04:12:35,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-28 04:12:35,909 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:12:35,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1866762679, now seen corresponding path program 1 times [2024-11-28 04:12:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080507298] [2024-11-28 04:12:35,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:12:36,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080507298] [2024-11-28 04:12:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080507298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972554751] [2024-11-28 04:12:36,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:36,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:36,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:36,713 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:36,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 04:12:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:37,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:12:37,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:37,413 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 8 treesize of output 1 [2024-11-28 04:12:37,924 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 [2024-11-28 04:12:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:12:37,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972554751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:38,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2024-11-28 04:12:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570256321] [2024-11-28 04:12:38,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:38,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:12:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:38,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:12:38,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:12:38,665 INFO L87 Difference]: Start difference. First operand 336 states and 389 transitions. Second operand has 13 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:12:42,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:12:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:43,517 INFO L93 Difference]: Finished difference Result 336 states and 389 transitions. [2024-11-28 04:12:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:12:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 95 [2024-11-28 04:12:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:43,519 INFO L225 Difference]: With dead ends: 336 [2024-11-28 04:12:43,519 INFO L226 Difference]: Without dead ends: 335 [2024-11-28 04:12:43,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:12:43,520 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 269 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:43,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 374 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 225 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 04:12:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-28 04:12:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2024-11-28 04:12:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 265 states have (on average 1.3169811320754716) internal successors, (349), 310 states have internal predecessors, (349), 14 states have call successors, (14), 9 states have call predecessors, (14), 14 states have return successors, (25), 15 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:12:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 388 transitions. [2024-11-28 04:12:43,574 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 388 transitions. Word has length 95 [2024-11-28 04:12:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:43,575 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 388 transitions. [2024-11-28 04:12:43,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:12:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 388 transitions. [2024-11-28 04:12:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:12:43,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:43,575 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:12:43,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:43,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-28 04:12:43,776 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:12:43,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2071580044, now seen corresponding path program 2 times [2024-11-28 04:12:43,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581195352] [2024-11-28 04:12:43,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:12:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:43,807 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:12:43,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:12:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802522158] [2024-11-28 04:12:43,810 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:12:43,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:43,813 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:43,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 04:12:44,217 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:12:44,217 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:44,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 04:12:44,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:44,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:12:44,470 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 [2024-11-28 04:12:44,785 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 [2024-11-28 04:12:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:45,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581195352] [2024-11-28 04:12:46,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:12:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802522158] [2024-11-28 04:12:46,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802522158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:46,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:46,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-28 04:12:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185339728] [2024-11-28 04:12:46,026 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:46,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:12:46,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:46,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:12:46,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:12:46,027 INFO L87 Difference]: Start difference. First operand 335 states and 388 transitions. Second operand has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:12:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:47,900 INFO L93 Difference]: Finished difference Result 387 states and 430 transitions. [2024-11-28 04:12:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:12:47,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2024-11-28 04:12:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:47,903 INFO L225 Difference]: With dead ends: 387 [2024-11-28 04:12:47,903 INFO L226 Difference]: Without dead ends: 386 [2024-11-28 04:12:47,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:12:47,904 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 210 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:47,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1061 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:12:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-28 04:12:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 335. [2024-11-28 04:12:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 265 states have (on average 1.3132075471698113) internal successors, (348), 310 states have internal predecessors, (348), 14 states have call successors, (14), 9 states have call predecessors, (14), 14 states have return successors, (25), 15 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:12:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 387 transitions. [2024-11-28 04:12:47,969 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 387 transitions. Word has length 95 [2024-11-28 04:12:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:47,969 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 387 transitions. [2024-11-28 04:12:47,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:12:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 387 transitions. [2024-11-28 04:12:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 04:12:47,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:47,970 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:12:47,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 04:12:48,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 04:12:48,171 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:12:48,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2035068068, now seen corresponding path program 1 times [2024-11-28 04:12:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:48,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541359015] [2024-11-28 04:12:48,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:12:48,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713983000] [2024-11-28 04:12:48,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:48,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:48,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:48,210 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:48,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 04:12:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:48,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:12:48,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:48,551 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 [2024-11-28 04:12:49,556 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 [2024-11-28 04:12:57,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:12:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:12:57,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:57,819 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 9 treesize of output 5 [2024-11-28 04:12:57,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:57,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541359015] [2024-11-28 04:12:57,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:12:57,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713983000] [2024-11-28 04:12:57,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713983000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:57,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:57,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:12:57,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500679177] [2024-11-28 04:12:57,933 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:57,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:12:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:57,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:12:57,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=165, Unknown=2, NotChecked=0, Total=210 [2024-11-28 04:12:57,934 INFO L87 Difference]: Start difference. First operand 335 states and 387 transitions. Second operand has 11 states, 9 states have (on average 9.222222222222221) internal successors, (83), 11 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:13:01,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:06,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:10,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:14,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:18,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:22,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:26,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:30,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:34,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:38,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:42,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:46,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:50,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:55,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:13:59,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:03,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:03,055 INFO L93 Difference]: Finished difference Result 343 states and 393 transitions. [2024-11-28 04:14:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:14:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.222222222222221) internal successors, (83), 11 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 96 [2024-11-28 04:14:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:03,079 INFO L225 Difference]: With dead ends: 343 [2024-11-28 04:14:03,079 INFO L226 Difference]: Without dead ends: 342 [2024-11-28 04:14:03,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=62, Invalid=242, Unknown=2, NotChecked=0, Total=306 [2024-11-28 04:14:03,080 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 108 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:03,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 462 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 16 Unknown, 0 Unchecked, 65.0s Time] [2024-11-28 04:14:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-28 04:14:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 337. [2024-11-28 04:14:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 268 states have (on average 1.3059701492537314) internal successors, (350), 311 states have internal predecessors, (350), 13 states have call successors, (13), 10 states have call predecessors, (13), 15 states have return successors, (24), 15 states have call predecessors, (24), 13 states have call successors, (24) [2024-11-28 04:14:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 387 transitions. [2024-11-28 04:14:03,143 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 387 transitions. Word has length 96 [2024-11-28 04:14:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:03,143 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 387 transitions. [2024-11-28 04:14:03,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.222222222222221) internal successors, (83), 11 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:14:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 387 transitions. [2024-11-28 04:14:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:14:03,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:03,144 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:14:03,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-28 04:14:03,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-28 04:14:03,345 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:14:03,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1337399467, now seen corresponding path program 1 times [2024-11-28 04:14:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:03,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619617196] [2024-11-28 04:14:03,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:14:03,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660841559] [2024-11-28 04:14:03,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:03,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:03,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:03,388 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:03,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 04:14:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:03,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:14:03,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:03,772 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 [2024-11-28 04:14:04,530 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 [2024-11-28 04:14:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:14:04,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:04,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619617196] [2024-11-28 04:14:04,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:14:04,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660841559] [2024-11-28 04:14:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660841559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:04,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:14:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:14:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932692159] [2024-11-28 04:14:04,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:04,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:14:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:04,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:14:04,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:14:04,957 INFO L87 Difference]: Start difference. First operand 337 states and 387 transitions. Second operand has 11 states, 9 states have (on average 9.333333333333334) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:14:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:06,094 INFO L93 Difference]: Finished difference Result 384 states and 433 transitions. [2024-11-28 04:14:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:14:06,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.333333333333334) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 97 [2024-11-28 04:14:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:06,096 INFO L225 Difference]: With dead ends: 384 [2024-11-28 04:14:06,096 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 04:14:06,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:14:06,097 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 117 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:06,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 589 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 425 Invalid, 6 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:14:06,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 04:14:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 347. [2024-11-28 04:14:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 276 states have (on average 1.2971014492753623) internal successors, (358), 319 states have internal predecessors, (358), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:14:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 397 transitions. [2024-11-28 04:14:06,146 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 397 transitions. Word has length 97 [2024-11-28 04:14:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:06,146 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 397 transitions. [2024-11-28 04:14:06,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.333333333333334) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:14:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 397 transitions. [2024-11-28 04:14:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:14:06,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:06,147 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:14:06,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:06,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:06,347 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:14:06,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2076401554, now seen corresponding path program 2 times [2024-11-28 04:14:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:06,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882214982] [2024-11-28 04:14:06,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:06,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:06,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:14:06,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907468609] [2024-11-28 04:14:06,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:06,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:06,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:06,388 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:06,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 04:14:06,830 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:06,831 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:06,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 04:14:06,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:06,845 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 [2024-11-28 04:14:07,162 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 [2024-11-28 04:14:07,493 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 [2024-11-28 04:14:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:07,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:09,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:09,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882214982] [2024-11-28 04:14:09,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:14:09,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907468609] [2024-11-28 04:14:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907468609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:09,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:14:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-28 04:14:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695362447] [2024-11-28 04:14:09,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:09,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:14:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:09,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:14:09,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:14:09,137 INFO L87 Difference]: Start difference. First operand 347 states and 397 transitions. Second operand has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:10,778 INFO L93 Difference]: Finished difference Result 391 states and 432 transitions. [2024-11-28 04:14:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:14:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-28 04:14:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:10,781 INFO L225 Difference]: With dead ends: 391 [2024-11-28 04:14:10,781 INFO L226 Difference]: Without dead ends: 390 [2024-11-28 04:14:10,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:14:10,782 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 221 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:10,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1053 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:14:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-28 04:14:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 347. [2024-11-28 04:14:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 276 states have (on average 1.2934782608695652) internal successors, (357), 319 states have internal predecessors, (357), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:14:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 396 transitions. [2024-11-28 04:14:10,854 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 396 transitions. Word has length 97 [2024-11-28 04:14:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:10,854 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 396 transitions. [2024-11-28 04:14:10,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 396 transitions. [2024-11-28 04:14:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:14:10,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:10,855 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:10,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:11,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-28 04:14:11,060 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:14:11,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1490289346, now seen corresponding path program 1 times [2024-11-28 04:14:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:11,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697159039] [2024-11-28 04:14:11,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:14:11,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615089800] [2024-11-28 04:14:11,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:11,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:11,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:11,096 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:11,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 04:14:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:11,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:14:11,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:11,474 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 [2024-11-28 04:14:12,408 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 [2024-11-28 04:14:20,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 04:14:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:14:20,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:21,382 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 9 treesize of output 5 [2024-11-28 04:14:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697159039] [2024-11-28 04:14:21,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:14:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615089800] [2024-11-28 04:14:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615089800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:21,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:14:21,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:14:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855995670] [2024-11-28 04:14:21,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:21,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:14:21,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:21,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:14:21,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=218, Unknown=2, NotChecked=0, Total=272 [2024-11-28 04:14:21,506 INFO L87 Difference]: Start difference. First operand 347 states and 396 transitions. Second operand has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:14:25,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:14:29,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:14:33,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:14:37,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:41,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:45,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:49,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:53,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:14:57,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:15:02,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:06,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:10,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:14,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:18,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:15:22,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:15:26,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:15:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:26,789 INFO L93 Difference]: Finished difference Result 347 states and 396 transitions. [2024-11-28 04:15:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:15:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 98 [2024-11-28 04:15:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:26,820 INFO L225 Difference]: With dead ends: 347 [2024-11-28 04:15:26,820 INFO L226 Difference]: Without dead ends: 346 [2024-11-28 04:15:26,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=73, Invalid=305, Unknown=2, NotChecked=0, Total=380 [2024-11-28 04:15:26,820 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 109 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 4 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:26,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 546 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 405 Invalid, 16 Unknown, 0 Unchecked, 65.1s Time] [2024-11-28 04:15:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-28 04:15:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-28 04:15:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 276 states have (on average 1.289855072463768) internal successors, (356), 318 states have internal predecessors, (356), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:15:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 395 transitions. [2024-11-28 04:15:26,897 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 395 transitions. Word has length 98 [2024-11-28 04:15:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:26,898 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 395 transitions. [2024-11-28 04:15:26,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:15:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 395 transitions. [2024-11-28 04:15:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:15:26,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:26,899 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:15:26,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-28 04:15:27,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-28 04:15:27,100 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:15:27,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1045670669, now seen corresponding path program 1 times [2024-11-28 04:15:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975488837] [2024-11-28 04:15:27,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:27,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:15:27,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542068459] [2024-11-28 04:15:27,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:27,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:27,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:27,136 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:27,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 04:15:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:27,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:15:27,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:27,489 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 [2024-11-28 04:15:28,233 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 [2024-11-28 04:15:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:15:28,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975488837] [2024-11-28 04:15:28,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:15:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542068459] [2024-11-28 04:15:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542068459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:28,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:15:28,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:15:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432586947] [2024-11-28 04:15:28,868 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:28,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:15:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:28,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:15:28,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:15:28,870 INFO L87 Difference]: Start difference. First operand 346 states and 395 transitions. Second operand has 12 states, 10 states have (on average 8.6) internal successors, (86), 12 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:15:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:29,747 INFO L93 Difference]: Finished difference Result 381 states and 429 transitions. [2024-11-28 04:15:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:15:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.6) internal successors, (86), 12 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 99 [2024-11-28 04:15:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:29,750 INFO L225 Difference]: With dead ends: 381 [2024-11-28 04:15:29,750 INFO L226 Difference]: Without dead ends: 380 [2024-11-28 04:15:29,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:15:29,751 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 130 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:29,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 501 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 329 Invalid, 6 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:15:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-28 04:15:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 348. [2024-11-28 04:15:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 278 states have (on average 1.2877697841726619) internal successors, (358), 320 states have internal predecessors, (358), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:15:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 397 transitions. [2024-11-28 04:15:29,832 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 397 transitions. Word has length 99 [2024-11-28 04:15:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:29,833 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 397 transitions. [2024-11-28 04:15:29,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.6) internal successors, (86), 12 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:15:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 397 transitions. [2024-11-28 04:15:29,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:15:29,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:29,834 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:15:29,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-28 04:15:30,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:30,035 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:15:30,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1737900880, now seen corresponding path program 1 times [2024-11-28 04:15:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806394021] [2024-11-28 04:15:30,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:15:30,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384955310] [2024-11-28 04:15:30,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:30,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:30,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:30,064 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:30,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 04:15:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:30,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 04:15:30,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:30,436 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 [2024-11-28 04:15:30,669 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 [2024-11-28 04:15:30,972 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 [2024-11-28 04:15:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:31,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:37,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806394021] [2024-11-28 04:15:37,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:15:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384955310] [2024-11-28 04:15:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384955310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:37,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:15:37,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-28 04:15:37,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6111188] [2024-11-28 04:15:37,114 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:37,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:15:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:37,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:15:37,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=426, Unknown=1, NotChecked=0, Total=506 [2024-11-28 04:15:37,115 INFO L87 Difference]: Start difference. First operand 348 states and 397 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:15:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:39,089 INFO L93 Difference]: Finished difference Result 387 states and 428 transitions. [2024-11-28 04:15:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:15:39,090 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 99 [2024-11-28 04:15:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:39,092 INFO L225 Difference]: With dead ends: 387 [2024-11-28 04:15:39,092 INFO L226 Difference]: Without dead ends: 386 [2024-11-28 04:15:39,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=163, Invalid=766, Unknown=1, NotChecked=0, Total=930 [2024-11-28 04:15:39,093 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 215 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:39,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1392 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:15:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-28 04:15:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 348. [2024-11-28 04:15:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 278 states have (on average 1.2841726618705036) internal successors, (357), 320 states have internal predecessors, (357), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:15:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 396 transitions. [2024-11-28 04:15:39,178 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 396 transitions. Word has length 99 [2024-11-28 04:15:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:39,178 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 396 transitions. [2024-11-28 04:15:39,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:15:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 396 transitions. [2024-11-28 04:15:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:15:39,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:39,179 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:15:39,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-28 04:15:39,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2024-11-28 04:15:39,380 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:15:39,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1943947488, now seen corresponding path program 1 times [2024-11-28 04:15:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502758818] [2024-11-28 04:15:39,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:15:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839242765] [2024-11-28 04:15:39,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:39,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:39,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:39,411 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:39,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 04:15:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:39,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:15:39,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:39,803 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 [2024-11-28 04:15:40,649 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 [2024-11-28 04:15:48,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-28 04:15:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:15:48,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:56,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:56,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502758818] [2024-11-28 04:15:56,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:15:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839242765] [2024-11-28 04:15:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839242765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:56,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:15:56,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:15:56,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140562010] [2024-11-28 04:15:56,854 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:56,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:15:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:56,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:15:56,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=216, Unknown=4, NotChecked=0, Total=272 [2024-11-28 04:15:56,855 INFO L87 Difference]: Start difference. First operand 348 states and 396 transitions. Second operand has 13 states, 11 states have (on average 7.909090909090909) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:16:00,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:05,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:08,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:12,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:16,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:20,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:24,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:28,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:32,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:36,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:40,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:44,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:49,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:53,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:57,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:01,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:01,513 INFO L93 Difference]: Finished difference Result 348 states and 396 transitions. [2024-11-28 04:17:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:17:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.909090909090909) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 100 [2024-11-28 04:17:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:01,528 INFO L225 Difference]: With dead ends: 348 [2024-11-28 04:17:01,528 INFO L226 Difference]: Without dead ends: 347 [2024-11-28 04:17:01,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=74, Invalid=302, Unknown=4, NotChecked=0, Total=380 [2024-11-28 04:17:01,528 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 110 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 4 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:01,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 512 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 378 Invalid, 16 Unknown, 0 Unchecked, 64.5s Time] [2024-11-28 04:17:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-28 04:17:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2024-11-28 04:17:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 278 states have (on average 1.2805755395683454) internal successors, (356), 319 states have internal predecessors, (356), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:17:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 395 transitions. [2024-11-28 04:17:01,568 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 395 transitions. Word has length 100 [2024-11-28 04:17:01,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:01,568 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 395 transitions. [2024-11-28 04:17:01,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.909090909090909) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:17:01,568 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 395 transitions. [2024-11-28 04:17:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:17:01,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:01,569 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:17:01,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-11-28 04:17:01,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-28 04:17:01,774 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:17:01,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash -132829841, now seen corresponding path program 1 times [2024-11-28 04:17:01,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:01,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943182149] [2024-11-28 04:17:01,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:17:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368421010] [2024-11-28 04:17:01,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:01,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:01,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:01,803 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:01,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 04:17:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:02,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:17:02,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:02,226 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 [2024-11-28 04:17:03,108 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 [2024-11-28 04:17:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:17:03,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:03,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943182149] [2024-11-28 04:17:03,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:17:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368421010] [2024-11-28 04:17:03,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368421010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:03,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:17:03,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 04:17:03,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66591488] [2024-11-28 04:17:03,999 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:03,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:17:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:03,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:17:04,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:17:04,000 INFO L87 Difference]: Start difference. First operand 347 states and 395 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:17:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:05,094 INFO L93 Difference]: Finished difference Result 378 states and 425 transitions. [2024-11-28 04:17:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:17:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 101 [2024-11-28 04:17:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:05,096 INFO L225 Difference]: With dead ends: 378 [2024-11-28 04:17:05,097 INFO L226 Difference]: Without dead ends: 377 [2024-11-28 04:17:05,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:17:05,097 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 93 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:05,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 713 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 437 Invalid, 6 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:17:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-28 04:17:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 349. [2024-11-28 04:17:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 280 states have (on average 1.2785714285714285) internal successors, (358), 321 states have internal predecessors, (358), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:17:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 397 transitions. [2024-11-28 04:17:05,142 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 397 transitions. Word has length 101 [2024-11-28 04:17:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:05,142 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 397 transitions. [2024-11-28 04:17:05,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:17:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 397 transitions. [2024-11-28 04:17:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:17:05,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:05,143 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:17:05,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-11-28 04:17:05,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-28 04:17:05,343 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:17:05,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 177242370, now seen corresponding path program 1 times [2024-11-28 04:17:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:05,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837756491] [2024-11-28 04:17:05,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:17:05,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012011616] [2024-11-28 04:17:05,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:05,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:05,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:05,379 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:05,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 04:17:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:05,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 04:17:05,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:05,740 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 [2024-11-28 04:17:05,748 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 [2024-11-28 04:17:07,700 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 [2024-11-28 04:17:07,709 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 [2024-11-28 04:17:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:17:08,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:09,695 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 51 treesize of output 23 [2024-11-28 04:17:09,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-28 04:17:09,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:09,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837756491] [2024-11-28 04:17:09,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:17:09,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012011616] [2024-11-28 04:17:09,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012011616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:09,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:17:09,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-28 04:17:09,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403609384] [2024-11-28 04:17:09,929 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:09,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:17:09,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:09,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:17:09,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:17:09,930 INFO L87 Difference]: Start difference. First operand 349 states and 397 transitions. Second operand has 17 states, 14 states have (on average 6.357142857142857) internal successors, (89), 17 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:17:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:12,729 INFO L93 Difference]: Finished difference Result 377 states and 424 transitions. [2024-11-28 04:17:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:17:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.357142857142857) internal successors, (89), 17 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 102 [2024-11-28 04:17:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:12,732 INFO L225 Difference]: With dead ends: 377 [2024-11-28 04:17:12,732 INFO L226 Difference]: Without dead ends: 375 [2024-11-28 04:17:12,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:17:12,732 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 93 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:12,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 880 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 775 Invalid, 5 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:17:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-28 04:17:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 351. [2024-11-28 04:17:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 282 states have (on average 1.2765957446808511) internal successors, (360), 323 states have internal predecessors, (360), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:17:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions. [2024-11-28 04:17:12,770 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 102 [2024-11-28 04:17:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:12,770 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 399 transitions. [2024-11-28 04:17:12,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.357142857142857) internal successors, (89), 17 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:17:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions. [2024-11-28 04:17:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:17:12,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:12,772 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 04:17:12,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-28 04:17:12,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:12,972 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:17:12,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1631451412, now seen corresponding path program 2 times [2024-11-28 04:17:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388016490] [2024-11-28 04:17:12,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:13,010 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:13,010 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:17:13,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914516404] [2024-11-28 04:17:13,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:13,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:13,015 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:13,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 04:17:13,361 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:17:13,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:13,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:17:13,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:13,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2024-11-28 04:17:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:17:13,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:17:13,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388016490] [2024-11-28 04:17:13,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:17:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914516404] [2024-11-28 04:17:13,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914516404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:13,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:17:13,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:17:13,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387897329] [2024-11-28 04:17:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:13,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:17:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:13,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:17:13,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:17:13,704 INFO L87 Difference]: Start difference. First operand 351 states and 399 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:17:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:14,258 INFO L93 Difference]: Finished difference Result 351 states and 399 transitions. [2024-11-28 04:17:14,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:17:14,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2024-11-28 04:17:14,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:14,260 INFO L225 Difference]: With dead ends: 351 [2024-11-28 04:17:14,261 INFO L226 Difference]: Without dead ends: 349 [2024-11-28 04:17:14,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:17:14,261 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 87 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:14,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 370 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:17:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-28 04:17:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2024-11-28 04:17:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 282 states have (on average 1.25177304964539) internal successors, (353), 321 states have internal predecessors, (353), 14 states have call successors, (14), 11 states have call predecessors, (14), 16 states have return successors, (25), 16 states have call predecessors, (25), 14 states have call successors, (25) [2024-11-28 04:17:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 392 transitions. [2024-11-28 04:17:14,326 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 392 transitions. Word has length 103 [2024-11-28 04:17:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:14,326 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 392 transitions. [2024-11-28 04:17:14,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:17:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 392 transitions. [2024-11-28 04:17:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:17:14,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:14,328 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:14,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-28 04:17:14,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:14,532 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-28 04:17:14,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1468769564, now seen corresponding path program 1 times [2024-11-28 04:17:14,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:14,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548882944] [2024-11-28 04:17:14,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:14,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:17:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548882944] [2024-11-28 04:17:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548882944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130912246] [2024-11-28 04:17:15,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:15,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:15,042 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:15,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a52830-da7c-43bc-b2d0-3b5b8ce4471f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 04:17:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:15,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:17:15,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:15,435 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 [2024-11-28 04:17:16,693 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-28 04:17:16,694 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 45 treesize of output 37 [2024-11-28 04:17:22,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:17:22,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 50 [2024-11-28 04:17:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:22,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130912246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:22,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:17:22,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 19 [2024-11-28 04:17:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224659659] [2024-11-28 04:17:22,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:22,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:17:22,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:22,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:17:22,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=348, Unknown=1, NotChecked=0, Total=420 [2024-11-28 04:17:22,541 INFO L87 Difference]: Start difference. First operand 349 states and 392 transitions. Second operand has 20 states, 18 states have (on average 9.222222222222221) internal successors, (166), 20 states have internal predecessors, (166), 9 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-28 04:17:26,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:30,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:35,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:39,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:47,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:51,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:55,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:59,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]