./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll2.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_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/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_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/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_23a246e2-b4e1-4f58-acc9-9cbd2838d724/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 79769f30a585389c0c487adad51d510f66c0d5e44d42ecf952985ceac89e1c25 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:12:13,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:12:13,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:12:13,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:12:13,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:12:13,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:12:13,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:12:13,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:12:13,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:12:13,357 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:12:13,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:12:13,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:12:13,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:12:13,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:12:13,358 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:12:13,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:12:13,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:12:13,359 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:12:13,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:12:13,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:12:13,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:12:13,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:12:13,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:12:13,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:12:13,360 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:12:13,360 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:12:13,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:12:13,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:12:13,361 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:12:13,361 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:12:13,361 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:12:13,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:12:13,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:12:13,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:12:13,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:13,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:12:13,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:12:13,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:12:13,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:12:13,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:13,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:12:13,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:12:13,364 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:12:13,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:12:13,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:12:13,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:12:13,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:12:13,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:12:13,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:12:13,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:12:13,365 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_23a246e2-b4e1-4f58-acc9-9cbd2838d724/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 -> 79769f30a585389c0c487adad51d510f66c0d5e44d42ecf952985ceac89e1c25 [2024-11-28 02:12:13,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:12:13,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:12:13,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:12:13,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:12:13,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:12:13,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll2.c [2024-11-28 02:12:18,197 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/data/2e876d1fd/e52bf320c14741319ea6ede90227dc34/FLAGf2d5db0da [2024-11-28 02:12:18,663 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:12:18,664 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll2.c [2024-11-28 02:12:18,673 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/data/2e876d1fd/e52bf320c14741319ea6ede90227dc34/FLAGf2d5db0da [2024-11-28 02:12:18,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/data/2e876d1fd/e52bf320c14741319ea6ede90227dc34 [2024-11-28 02:12:18,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:12:18,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:12:18,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:12:18,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:12:18,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:12:18,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:18" (1/1) ... [2024-11-28 02:12:18,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2373734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:18, skipping insertion in model container [2024-11-28 02:12:18,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:18" (1/1) ... [2024-11-28 02:12:18,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:12:18,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:12:18,972 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:12:18,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:12:19,023 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:12:19,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19 WrapperNode [2024-11-28 02:12:19,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:12:19,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:19,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:12:19,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:12:19,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,064 INFO L138 Inliner]: procedures = 16, calls = 56, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-28 02:12:19,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:19,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:12:19,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:12:19,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:12:19,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,102 INFO L175 MemorySlicer]: Split 29 memory accesses to 6 slices as follows [2, 4, 5, 7, 3, 8]. 28 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 2, 2, 1, 1, 3]. [2024-11-28 02:12:19,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:12:19,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:12:19,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:12:19,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:12:19,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (1/1) ... [2024-11-28 02:12:19,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:19,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:12:19,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:12:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:12:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:12:19,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:12:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:12:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:12:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:12:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:12:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:12:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:12:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:12:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-11-28 02:12:19,279 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-11-28 02:12:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:12:19,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:12:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:12:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:12:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:12:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:12:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:12:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:12:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:12:19,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:12:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:12:19,387 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:12:19,389 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:12:19,913 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-28 02:12:19,913 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:12:19,940 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:12:19,941 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:12:19,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:19 BoogieIcfgContainer [2024-11-28 02:12:19,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:12:19,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:12:19,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:12:19,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:12:19,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:12:18" (1/3) ... [2024-11-28 02:12:19,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7693794f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:19, skipping insertion in model container [2024-11-28 02:12:19,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:19" (2/3) ... [2024-11-28 02:12:19,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7693794f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:19, skipping insertion in model container [2024-11-28 02:12:19,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:19" (3/3) ... [2024-11-28 02:12:19,962 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_geo1-ll2.c [2024-11-28 02:12:19,989 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:12:19,992 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_geo1-ll2.c that has 4 procedures, 79 locations, 1 initial locations, 0 loop locations, and 24 error locations. [2024-11-28 02:12:20,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:12:20,109 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;@4a573c8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:12:20,109 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-28 02:12:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:12:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 02:12:20,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:20,128 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:20,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:20,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 848014313, now seen corresponding path program 1 times [2024-11-28 02:12:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:20,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924106961] [2024-11-28 02:12:20,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:12:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:20,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924106961] [2024-11-28 02:12:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924106961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909166680] [2024-11-28 02:12:20,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:20,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:20,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:20,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:12:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:20,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:12:20,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:12:20,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:12:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909166680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:12:20,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:12:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292295745] [2024-11-28 02:12:20,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:20,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:12:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:20,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:12:20,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:20,804 INFO L87 Difference]: Start difference. First operand has 79 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:12:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:20,849 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2024-11-28 02:12:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:12:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-28 02:12:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:20,864 INFO L225 Difference]: With dead ends: 154 [2024-11-28 02:12:20,865 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 02:12:20,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:20,881 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:20,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:20,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 02:12:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-28 02:12:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.6) internal successors, (64), 64 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:12:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-11-28 02:12:20,966 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 18 [2024-11-28 02:12:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:20,967 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-11-28 02:12:20,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:12:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-11-28 02:12:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 02:12:20,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:20,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:20,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:12:21,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:21,173 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:21,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -972449563, now seen corresponding path program 1 times [2024-11-28 02:12:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837320667] [2024-11-28 02:12:21,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:12:21,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264368568] [2024-11-28 02:12:21,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:21,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:21,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:21,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:12:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:21,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:12:21,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:21,667 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 02:12:21,900 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 02:12:22,075 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 02:12:22,090 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 02:12:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:22,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:22,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:22,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837320667] [2024-11-28 02:12:22,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:12:22,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264368568] [2024-11-28 02:12:22,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264368568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:22,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:12:22,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 02:12:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107612736] [2024-11-28 02:12:22,733 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:22,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:12:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:22,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:12:22,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:12:22,736 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:12:26,758 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 02:12:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:27,498 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-28 02:12:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:12:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-28 02:12:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:27,500 INFO L225 Difference]: With dead ends: 112 [2024-11-28 02:12:27,500 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 02:12:27,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:12:27,505 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 134 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:27,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 386 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 02:12:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 02:12:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2024-11-28 02:12:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 80 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2024-11-28 02:12:27,533 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 18 [2024-11-28 02:12:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:27,533 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2024-11-28 02:12:27,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:12:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2024-11-28 02:12:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 02:12:27,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:27,537 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:27,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:12:27,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:27,742 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:27,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:27,742 INFO L85 PathProgramCache]: Analyzing trace with hash -81165336, now seen corresponding path program 1 times [2024-11-28 02:12:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:27,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733789018] [2024-11-28 02:12:27,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:27,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:12:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259835138] [2024-11-28 02:12:27,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:27,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:27,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:27,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:27,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:12:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:27,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 02:12:27,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:27,992 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 02:12:28,497 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 02:12:28,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:12:28,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 02:12:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:28,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:12:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733789018] [2024-11-28 02:12:29,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:12:29,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259835138] [2024-11-28 02:12:29,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259835138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:29,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:12:29,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2024-11-28 02:12:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218851571] [2024-11-28 02:12:29,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:29,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:12:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:29,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:12:29,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:12:29,712 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 17 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:12:33,735 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 02:12:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:35,725 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2024-11-28 02:12:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:12:35,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 17 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2024-11-28 02:12:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:35,729 INFO L225 Difference]: With dead ends: 111 [2024-11-28 02:12:35,729 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 02:12:35,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:12:35,735 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 197 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:35,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 576 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 394 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 02:12:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 02:12:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2024-11-28 02:12:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 80 states have internal predecessors, (87), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2024-11-28 02:12:35,779 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 19 [2024-11-28 02:12:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:35,779 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2024-11-28 02:12:35,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 17 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:12:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2024-11-28 02:12:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:12:35,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:35,781 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:35,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:12:35,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:35,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:35,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1778841927, now seen corresponding path program 1 times [2024-11-28 02:12:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899154180] [2024-11-28 02:12:35,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:12:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758693462] [2024-11-28 02:12:36,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:36,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:36,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:36,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:36,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:12:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:36,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:12:36,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:36,256 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 02:12:36,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:12:36,520 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 02:12:36,611 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 02:12:36,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:12:36,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:36,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899154180] [2024-11-28 02:12:36,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:12:36,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758693462] [2024-11-28 02:12:36,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758693462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:36,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:36,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:12:36,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053815088] [2024-11-28 02:12:36,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:36,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:12:36,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:36,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:12:36,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:12:36,620 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:12:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:37,012 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2024-11-28 02:12:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:12:37,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-28 02:12:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:37,017 INFO L225 Difference]: With dead ends: 110 [2024-11-28 02:12:37,017 INFO L226 Difference]: Without dead ends: 109 [2024-11-28 02:12:37,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:12:37,018 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 135 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:37,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 298 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:12:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-28 02:12:37,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2024-11-28 02:12:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 80 states have internal predecessors, (86), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2024-11-28 02:12:37,050 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 20 [2024-11-28 02:12:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:37,051 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2024-11-28 02:12:37,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:12:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2024-11-28 02:12:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 02:12:37,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:37,051 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:37,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:12:37,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:37,253 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:37,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash -690475062, now seen corresponding path program 1 times [2024-11-28 02:12:37,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:37,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036152410] [2024-11-28 02:12:37,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:37,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:37,834 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 02:12:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036152410] [2024-11-28 02:12:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036152410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:37,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:37,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:12:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111517908] [2024-11-28 02:12:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:37,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:37,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:37,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:37,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:37,837 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:12:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:38,179 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2024-11-28 02:12:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-28 02:12:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:38,182 INFO L225 Difference]: With dead ends: 117 [2024-11-28 02:12:38,182 INFO L226 Difference]: Without dead ends: 116 [2024-11-28 02:12:38,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:12:38,184 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 68 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:38,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 282 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:12:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-28 02:12:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 91. [2024-11-28 02:12:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 80 states have internal predecessors, (85), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2024-11-28 02:12:38,205 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 21 [2024-11-28 02:12:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:38,205 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2024-11-28 02:12:38,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:12:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2024-11-28 02:12:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 02:12:38,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:38,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:38,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:12:38,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:38,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 70109609, now seen corresponding path program 1 times [2024-11-28 02:12:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:38,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548317391] [2024-11-28 02:12:38,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:12:38,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809554621] [2024-11-28 02:12:38,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:38,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:38,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:12:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:38,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 02:12:38,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:38,448 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 02:12:38,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:12:38,473 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 02:12:38,564 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 19 treesize of output 11 [2024-11-28 02:12:38,672 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 02:12:38,699 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 02:12:38,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:12:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548317391] [2024-11-28 02:12:38,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:12:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809554621] [2024-11-28 02:12:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809554621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:38,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:12:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996735123] [2024-11-28 02:12:38,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:38,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:12:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:38,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:12:38,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:12:38,702 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:12:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:39,094 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2024-11-28 02:12:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:12:39,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-28 02:12:39,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:39,097 INFO L225 Difference]: With dead ends: 108 [2024-11-28 02:12:39,097 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 02:12:39,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:12:39,099 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 65 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:39,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 371 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:12:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 02:12:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2024-11-28 02:12:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 80 states have internal predecessors, (81), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2024-11-28 02:12:39,117 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 22 [2024-11-28 02:12:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:39,118 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2024-11-28 02:12:39,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:12:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2024-11-28 02:12:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 02:12:39,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:39,122 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] [2024-11-28 02:12:39,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:12:39,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:39,323 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_30_to_38_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:39,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1777123903, now seen corresponding path program 1 times [2024-11-28 02:12:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704748978] [2024-11-28 02:12:39,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:39,933 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 02:12:39,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704748978] [2024-11-28 02:12:39,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704748978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:39,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:39,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:39,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9843242] [2024-11-28 02:12:39,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:39,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:12:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:39,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:12:39,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:12:39,939 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:12:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:40,124 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2024-11-28 02:12:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:12:40,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-28 02:12:40,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:40,127 INFO L225 Difference]: With dead ends: 112 [2024-11-28 02:12:40,127 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 02:12:40,127 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 02:12:40,131 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 38 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:40,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 333 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 02:12:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 92. [2024-11-28 02:12:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 81 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-11-28 02:12:40,149 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 33 [2024-11-28 02:12:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:40,150 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-11-28 02:12:40,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:12:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-11-28 02:12:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 02:12:40,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:40,152 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] [2024-11-28 02:12:40,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:12:40,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_30_to_38_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:40,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash 743733922, now seen corresponding path program 1 times [2024-11-28 02:12:40,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:40,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919288038] [2024-11-28 02:12:40,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:40,759 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 02:12:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:40,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919288038] [2024-11-28 02:12:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919288038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:40,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:40,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697436990] [2024-11-28 02:12:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:40,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:12:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:40,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:12:40,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:12:40,762 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:12:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:40,973 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2024-11-28 02:12:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:12:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-11-28 02:12:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:40,978 INFO L225 Difference]: With dead ends: 92 [2024-11-28 02:12:40,978 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 02:12:40,979 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 02:12:40,980 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 80 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:40,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 271 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 02:12:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-28 02:12:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 80 states have internal predecessors, (81), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:12:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2024-11-28 02:12:41,037 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 34 [2024-11-28 02:12:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:41,037 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2024-11-28 02:12:41,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:12:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2024-11-28 02:12:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 02:12:41,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:41,040 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] [2024-11-28 02:12:41,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:12:41,041 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:41,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1580915171, now seen corresponding path program 1 times [2024-11-28 02:12:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:41,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439400854] [2024-11-28 02:12:41,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:41,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:12:41,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942078509] [2024-11-28 02:12:41,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:41,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:41,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:41,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:12:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:41,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:12:41,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:41,336 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 02:12:41,500 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 02:12:41,898 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 02:12:41,908 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 02:12:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:41,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:42,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439400854] [2024-11-28 02:12:42,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:12:42,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942078509] [2024-11-28 02:12:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942078509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:42,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:12:42,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 02:12:42,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463104687] [2024-11-28 02:12:42,256 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:42,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:12:42,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:42,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:12:42,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:12:42,260 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 12 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:12:46,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:12:50,280 WARN L539 Checker$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 02:12:54,660 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 02:12:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:54,821 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2024-11-28 02:12:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:12:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2024-11-28 02:12:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:54,824 INFO L225 Difference]: With dead ends: 96 [2024-11-28 02:12:54,824 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 02:12:54,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:12:54,826 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 101 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:54,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 335 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 155 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-28 02:12:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 02:12:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2024-11-28 02:12:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 79 states have internal predecessors, (80), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:12:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2024-11-28 02:12:54,852 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 35 [2024-11-28 02:12:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:54,852 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2024-11-28 02:12:54,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:12:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2024-11-28 02:12:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:12:54,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:54,854 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] [2024-11-28 02:12:54,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:12:55,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:55,056 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:12:55,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1763439701, now seen corresponding path program 1 times [2024-11-28 02:12:55,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:55,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997151858] [2024-11-28 02:12:55,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:55,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:12:55,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997151858] [2024-11-28 02:12:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997151858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688329721] [2024-11-28 02:12:55,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:55,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:55,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:55,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:12:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:55,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:12:55,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:56,004 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 02:12:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:56,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:12:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688329721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:56,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:56,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 12 [2024-11-28 02:12:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226656811] [2024-11-28 02:12:56,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:56,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:12:56,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:56,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:12:56,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:12:56,340 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 13 states, 10 states have (on average 5.5) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-28 02:13:00,355 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 02:13:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:00,710 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2024-11-28 02:13:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:13:00,712 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 5.5) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) Word has length 36 [2024-11-28 02:13:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:00,713 INFO L225 Difference]: With dead ends: 91 [2024-11-28 02:13:00,713 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 02:13:00,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:13:00,715 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 45 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:00,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 304 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 02:13:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 02:13:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-28 02:13:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 78 states have internal predecessors, (79), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-28 02:13:00,741 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 36 [2024-11-28 02:13:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:00,742 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-28 02:13:00,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 5.5) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-28 02:13:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-28 02:13:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:13:00,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:00,745 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] [2024-11-28 02:13:00,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:13:00,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:00,946 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_30_to_38_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:00,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1763730116, now seen corresponding path program 1 times [2024-11-28 02:13:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:00,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297184694] [2024-11-28 02:13:00,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:01,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728588341] [2024-11-28 02:13:01,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:01,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:01,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:01,017 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:01,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:13:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:01,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:13:01,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:01,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:13:01,934 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 21 treesize of output 13 [2024-11-28 02:13:01,942 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 02:13:05,163 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 02:13:05,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:13:05,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:05,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297184694] [2024-11-28 02:13:05,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:13:05,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728588341] [2024-11-28 02:13:05,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728588341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:05,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:13:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000156425] [2024-11-28 02:13:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:05,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:05,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:05,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:05,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:05,166 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:13:09,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:13:13,202 WARN L539 Checker$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 02:13:17,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:13:21,576 WARN L539 Checker$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 02:13:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:21,907 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-11-28 02:13:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:13:21,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-28 02:13:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:21,910 INFO L225 Difference]: With dead ends: 90 [2024-11-28 02:13:21,911 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 02:13:21,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:13:21,912 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 33 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:21,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 179 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2024-11-28 02:13:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 02:13:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 02:13:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 77 states have internal predecessors, (78), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-28 02:13:21,939 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 36 [2024-11-28 02:13:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:21,939 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-28 02:13:21,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:13:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-28 02:13:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 02:13:21,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:21,941 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] [2024-11-28 02:13:21,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:13:22,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:22,142 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:22,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1167944020, now seen corresponding path program 1 times [2024-11-28 02:13:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:22,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718875257] [2024-11-28 02:13:22,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:22,382 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 02:13:22,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:22,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718875257] [2024-11-28 02:13:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718875257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:22,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:13:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652311734] [2024-11-28 02:13:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:22,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:22,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:22,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:22,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:22,386 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:13:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:22,449 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2024-11-28 02:13:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:22,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-11-28 02:13:22,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:22,451 INFO L225 Difference]: With dead ends: 89 [2024-11-28 02:13:22,451 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 02:13:22,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:22,451 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:22,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 168 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:13:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 02:13:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-28 02:13:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 76 states have internal predecessors, (77), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-28 02:13:22,467 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 37 [2024-11-28 02:13:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:22,468 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-28 02:13:22,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:13:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-28 02:13:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:13:22,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:22,472 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] [2024-11-28 02:13:22,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:13:22,473 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:22,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1846526153, now seen corresponding path program 1 times [2024-11-28 02:13:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:22,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129200607] [2024-11-28 02:13:22,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:22,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836740066] [2024-11-28 02:13:22,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:22,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:22,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:22,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:22,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:13:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:22,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:13:22,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:22,638 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 02:13:22,721 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 02:13:22,932 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 02:13:22,971 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 02:13:22,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:13:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129200607] [2024-11-28 02:13:22,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:13:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836740066] [2024-11-28 02:13:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836740066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:22,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388252087] [2024-11-28 02:13:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:22,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:13:22,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:22,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:13:22,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:13:22,975 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:13:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:23,174 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2024-11-28 02:13:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:13:23,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-28 02:13:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:23,176 INFO L225 Difference]: With dead ends: 94 [2024-11-28 02:13:23,176 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 02:13:23,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:13:23,177 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 67 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:23,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 147 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:13:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 02:13:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-28 02:13:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 79 states have internal predecessors, (81), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-11-28 02:13:23,198 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 38 [2024-11-28 02:13:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:23,199 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-11-28 02:13:23,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:13:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-11-28 02:13:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:13:23,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:23,200 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] [2024-11-28 02:13:23,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:13:23,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:13:23,400 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:23,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1567438106, now seen corresponding path program 1 times [2024-11-28 02:13:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:23,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96102629] [2024-11-28 02:13:23,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:23,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195109121] [2024-11-28 02:13:23,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:23,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:23,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:23,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:13:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:23,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:13:23,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:23,626 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 15 treesize of output 1 [2024-11-28 02:13:23,736 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 02:13:24,126 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 02:13:24,178 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 02:13:24,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:13:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96102629] [2024-11-28 02:13:24,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:13:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195109121] [2024-11-28 02:13:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195109121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:24,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:24,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:13:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25312397] [2024-11-28 02:13:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:24,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:13:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:24,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:13:24,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:24,183 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:13:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:24,519 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2024-11-28 02:13:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:24,519 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-28 02:13:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:24,521 INFO L225 Difference]: With dead ends: 104 [2024-11-28 02:13:24,521 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:13:24,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:13:24,522 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:24,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 316 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:13:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:13:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-11-28 02:13:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 87 states have internal predecessors, (89), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2024-11-28 02:13:24,538 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 38 [2024-11-28 02:13:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:24,538 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2024-11-28 02:13:24,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:13:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2024-11-28 02:13:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 02:13:24,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:24,540 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] [2024-11-28 02:13:24,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:13:24,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:13:24,744 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:24,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1407735794, now seen corresponding path program 1 times [2024-11-28 02:13:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:24,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123113210] [2024-11-28 02:13:24,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:24,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789988486] [2024-11-28 02:13:24,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:24,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:24,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:24,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:13:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:24,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:13:24,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:24,946 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 02:13:25,062 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 02:13:25,290 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 02:13:25,334 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 02:13:25,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:13:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123113210] [2024-11-28 02:13:25,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:13:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789988486] [2024-11-28 02:13:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789988486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:25,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:25,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:25,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45345246] [2024-11-28 02:13:25,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:25,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:13:25,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:25,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:13:25,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:13:25,337 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:13:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:25,613 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2024-11-28 02:13:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:13:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-28 02:13:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:25,616 INFO L225 Difference]: With dead ends: 103 [2024-11-28 02:13:25,616 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 02:13:25,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:13:25,617 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 48 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:25,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 191 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:13:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 02:13:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-28 02:13:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.267605633802817) internal successors, (90), 88 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-11-28 02:13:25,638 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 39 [2024-11-28 02:13:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:25,638 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-11-28 02:13:25,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:13:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-11-28 02:13:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 02:13:25,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:25,640 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] [2024-11-28 02:13:25,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:13:25,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:13:25,841 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_38_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:25,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:25,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1345940953, now seen corresponding path program 1 times [2024-11-28 02:13:25,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:25,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571984344] [2024-11-28 02:13:25,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:25,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:25,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045627339] [2024-11-28 02:13:25,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:25,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:25,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:25,903 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:25,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:13:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:26,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 02:13:26,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:26,106 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 02:13:26,240 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 15 treesize of output 11 [2024-11-28 02:13:27,120 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 19 treesize of output 11 [2024-11-28 02:13:27,127 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 02:13:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:27,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:27,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:27,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571984344] [2024-11-28 02:13:27,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:13:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045627339] [2024-11-28 02:13:27,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045627339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:27,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:13:27,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 02:13:27,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206031688] [2024-11-28 02:13:27,514 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:13:27,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:13:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:27,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:13:27,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:13:27,516 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 12 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:13:31,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:13:37,396 WARN L539 Checker$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 02:13:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:37,847 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2024-11-28 02:13:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:13:37,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-28 02:13:37,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:37,851 INFO L225 Difference]: With dead ends: 114 [2024-11-28 02:13:37,851 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 02:13:37,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:13:37,855 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:37,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 464 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 184 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2024-11-28 02:13:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 02:13:37,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-28 02:13:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 89 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2024-11-28 02:13:37,881 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 39 [2024-11-28 02:13:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:37,881 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2024-11-28 02:13:37,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:13:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2024-11-28 02:13:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 02:13:37,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:37,884 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] [2024-11-28 02:13:37,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:13:38,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:13:38,085 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:38,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -690136551, now seen corresponding path program 1 times [2024-11-28 02:13:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193505198] [2024-11-28 02:13:38,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:38,303 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 02:13:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:38,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193505198] [2024-11-28 02:13:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193505198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:38,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:13:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341220040] [2024-11-28 02:13:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:38,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:38,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:38,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:38,306 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:13:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:38,403 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2024-11-28 02:13:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:38,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-11-28 02:13:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:38,405 INFO L225 Difference]: With dead ends: 103 [2024-11-28 02:13:38,405 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 02:13:38,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:38,407 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 3 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:38,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 170 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:13:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 02:13:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-28 02:13:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 72 states have (on average 1.25) internal successors, (90), 88 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-11-28 02:13:38,434 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 40 [2024-11-28 02:13:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:38,434 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-11-28 02:13:38,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:13:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-11-28 02:13:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 02:13:38,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:38,436 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] [2024-11-28 02:13:38,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:13:38,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_30_to_38_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:38,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1225503496, now seen corresponding path program 1 times [2024-11-28 02:13:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9500942] [2024-11-28 02:13:38,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:38,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448165701] [2024-11-28 02:13:38,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:38,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:38,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:38,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:13:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:38,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 02:13:38,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:38,725 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 02:13:39,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:13:39,125 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 02:13:41,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:13:41,011 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 65 treesize of output 69 [2024-11-28 02:13:41,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:13:41,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 72 [2024-11-28 02:13:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:41,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:45,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9500942] [2024-11-28 02:13:45,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:13:45,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448165701] [2024-11-28 02:13:45,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448165701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:45,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:13:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-28 02:13:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731020738] [2024-11-28 02:13:45,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:13:45,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:13:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:45,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:13:45,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=333, Unknown=1, NotChecked=0, Total=420 [2024-11-28 02:13:45,958 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:13:49,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:13:53,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:13:58,567 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 02:13:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:59,214 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2024-11-28 02:13:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:13:59,217 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2024-11-28 02:13:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:59,218 INFO L225 Difference]: With dead ends: 111 [2024-11-28 02:13:59,219 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 02:13:59,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=148, Invalid=607, Unknown=1, NotChecked=0, Total=756 [2024-11-28 02:13:59,220 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 174 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:59,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 427 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 317 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2024-11-28 02:13:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 02:13:59,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2024-11-28 02:13:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 89 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:13:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2024-11-28 02:13:59,243 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 40 [2024-11-28 02:13:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:59,244 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2024-11-28 02:13:59,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:13:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2024-11-28 02:13:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 02:13:59,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:59,245 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] [2024-11-28 02:13:59,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:13:59,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:13:59,447 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:13:59,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 80603504, now seen corresponding path program 1 times [2024-11-28 02:13:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512713631] [2024-11-28 02:13:59,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:13:59,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141964377] [2024-11-28 02:13:59,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:59,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:59,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:59,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:13:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:59,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:13:59,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:59,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:13:59,842 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 02:14:00,095 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 02:14:00,207 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 02:14:00,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512713631] [2024-11-28 02:14:00,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:14:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141964377] [2024-11-28 02:14:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141964377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:00,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:14:00,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805482425] [2024-11-28 02:14:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:00,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:14:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:00,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:14:00,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:14:00,211 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:00,692 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2024-11-28 02:14:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:14:00,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2024-11-28 02:14:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:00,694 INFO L225 Difference]: With dead ends: 108 [2024-11-28 02:14:00,694 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 02:14:00,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:14:00,695 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 54 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:00,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 198 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:14:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 02:14:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-11-28 02:14:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.24) internal successors, (93), 91 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:14:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-11-28 02:14:00,721 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 41 [2024-11-28 02:14:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:00,721 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-11-28 02:14:00,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-11-28 02:14:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 02:14:00,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:00,722 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] [2024-11-28 02:14:00,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:14:00,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:00,923 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:00,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1796258565, now seen corresponding path program 1 times [2024-11-28 02:14:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258675595] [2024-11-28 02:14:00,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:14:00,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820332896] [2024-11-28 02:14:00,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:00,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:00,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:00,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:00,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:14:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:01,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:14:01,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:01,206 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 15 treesize of output 1 [2024-11-28 02:14:01,213 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 02:14:01,224 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 15 treesize of output 11 [2024-11-28 02:14:01,262 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 02:14:01,432 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 19 treesize of output 11 [2024-11-28 02:14:01,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 02:14:01,589 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 02:14:01,589 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:01,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:01,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258675595] [2024-11-28 02:14:01,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:14:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820332896] [2024-11-28 02:14:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820332896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:01,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:14:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831081100] [2024-11-28 02:14:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:01,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:14:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:01,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:14:01,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:14:01,592 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:01,922 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2024-11-28 02:14:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:14:01,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-11-28 02:14:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:01,924 INFO L225 Difference]: With dead ends: 108 [2024-11-28 02:14:01,924 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 02:14:01,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:14:01,925 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:01,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 203 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:14:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 02:14:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2024-11-28 02:14:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.236842105263158) internal successors, (94), 92 states have internal predecessors, (94), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:14:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2024-11-28 02:14:01,950 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 42 [2024-11-28 02:14:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:01,951 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2024-11-28 02:14:01,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2024-11-28 02:14:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 02:14:01,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:01,952 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] [2024-11-28 02:14:01,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:02,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:02,157 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:02,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash 150559442, now seen corresponding path program 1 times [2024-11-28 02:14:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:02,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339182369] [2024-11-28 02:14:02,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:02,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:14:02,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339182369] [2024-11-28 02:14:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339182369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244268220] [2024-11-28 02:14:02,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:02,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:02,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:02,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:14:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:02,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:14:02,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:02,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-28 02:14:02,936 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 02:14:03,012 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 02:14:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:14:03,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244268220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:03,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:14:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2024-11-28 02:14:03,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050797959] [2024-11-28 02:14:03,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:03,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:14:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:03,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:14:03,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:14:03,275 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:14:07,288 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 02:14:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:07,862 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2024-11-28 02:14:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:14:07,863 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-11-28 02:14:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:07,864 INFO L225 Difference]: With dead ends: 108 [2024-11-28 02:14:07,864 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 02:14:07,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:14:07,866 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 88 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:07,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 321 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:14:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 02:14:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 02:14:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 83 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:14:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-28 02:14:07,885 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 43 [2024-11-28 02:14:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:07,885 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-28 02:14:07,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:14:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-28 02:14:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 02:14:07,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:07,886 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] [2024-11-28 02:14:07,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:14:08,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:14:08,087 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:08,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1499060561, now seen corresponding path program 1 times [2024-11-28 02:14:08,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:08,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456054472] [2024-11-28 02:14:08,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:08,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:14:08,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117462963] [2024-11-28 02:14:08,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:08,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:08,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:08,123 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:08,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:14:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:08,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 02:14:08,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:08,339 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 02:14:08,495 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 02:14:09,062 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 17 [2024-11-28 02:14:09,190 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 28 treesize of output 16 [2024-11-28 02:14:09,198 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 24 treesize of output 12 [2024-11-28 02:14:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:14:09,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456054472] [2024-11-28 02:14:13,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:14:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117462963] [2024-11-28 02:14:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117462963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:13,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:13,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-28 02:14:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75782673] [2024-11-28 02:14:13,939 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:13,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:14:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:13,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:14:13,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=318, Unknown=1, NotChecked=0, Total=380 [2024-11-28 02:14:13,941 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:14:17,954 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 02:14:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:19,288 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2024-11-28 02:14:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:14:19,290 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-28 02:14:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:19,291 INFO L225 Difference]: With dead ends: 130 [2024-11-28 02:14:19,292 INFO L226 Difference]: Without dead ends: 129 [2024-11-28 02:14:19,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=114, Invalid=587, Unknown=1, NotChecked=0, Total=702 [2024-11-28 02:14:19,295 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 166 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:19,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 461 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 02:14:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-28 02:14:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2024-11-28 02:14:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 81 states have (on average 1.308641975308642) internal successors, (106), 98 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-28 02:14:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2024-11-28 02:14:19,329 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 44 [2024-11-28 02:14:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:19,330 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2024-11-28 02:14:19,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:14:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2024-11-28 02:14:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 02:14:19,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:19,331 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] [2024-11-28 02:14:19,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:19,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:14:19,536 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:19,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash 773762910, now seen corresponding path program 1 times [2024-11-28 02:14:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716586005] [2024-11-28 02:14:19,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:14:19,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572028824] [2024-11-28 02:14:19,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:19,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:19,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:19,580 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:19,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:14:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:19,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 02:14:19,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:19,857 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 02:14:20,241 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 02:14:20,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:14:21,926 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 17 [2024-11-28 02:14:21,941 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 19 treesize of output 11 [2024-11-28 02:14:22,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:14:22,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 40 [2024-11-28 02:14:22,589 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 67 treesize of output 39 [2024-11-28 02:14:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:14:22,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:28,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:28,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716586005] [2024-11-28 02:14:28,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:14:28,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572028824] [2024-11-28 02:14:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572028824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:28,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:28,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-28 02:14:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199372647] [2024-11-28 02:14:28,692 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:28,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:14:28,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:28,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:14:28,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=632, Unknown=1, NotChecked=0, Total=756 [2024-11-28 02:14:28,693 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:14:32,738 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 02:14:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:36,124 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2024-11-28 02:14:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:14:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-28 02:14:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:36,126 INFO L225 Difference]: With dead ends: 129 [2024-11-28 02:14:36,126 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 02:14:36,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=217, Invalid=1114, Unknown=1, NotChecked=0, Total=1332 [2024-11-28 02:14:36,128 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 211 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:36,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 544 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 712 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 02:14:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 02:14:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2024-11-28 02:14:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 98 states have internal predecessors, (105), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-28 02:14:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2024-11-28 02:14:36,159 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 45 [2024-11-28 02:14:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:36,160 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2024-11-28 02:14:36,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:14:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2024-11-28 02:14:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 02:14:36,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:36,162 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] [2024-11-28 02:14:36,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:14:36,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:14:36,366 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_30_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:36,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1783153519, now seen corresponding path program 1 times [2024-11-28 02:14:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:36,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486999325] [2024-11-28 02:14:36,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:14:36,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384971778] [2024-11-28 02:14:36,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:36,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:36,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:36,415 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:36,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:14:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:36,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 02:14:36,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:36,648 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 02:14:36,819 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 02:14:37,260 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 17 [2024-11-28 02:14:37,345 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 37 treesize of output 21 [2024-11-28 02:14:37,387 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 40 treesize of output 20 [2024-11-28 02:14:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:14:37,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:14:37,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486999325] [2024-11-28 02:14:37,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:14:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384971778] [2024-11-28 02:14:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384971778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:14:37,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:14:37,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2024-11-28 02:14:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800915641] [2024-11-28 02:14:37,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:37,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:14:37,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:37,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:14:37,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:14:37,945 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 21 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 8 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:14:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:40,728 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2024-11-28 02:14:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:14:40,729 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 8 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2024-11-28 02:14:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:40,730 INFO L225 Difference]: With dead ends: 128 [2024-11-28 02:14:40,730 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 02:14:40,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:14:40,732 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 204 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:40,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 598 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 02:14:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 02:14:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2024-11-28 02:14:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 81 states have (on average 1.271604938271605) internal successors, (103), 98 states have internal predecessors, (103), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-28 02:14:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2024-11-28 02:14:40,767 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 46 [2024-11-28 02:14:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:40,768 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2024-11-28 02:14:40,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 8 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:14:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2024-11-28 02:14:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:14:40,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:40,769 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] [2024-11-28 02:14:40,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:40,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:40,974 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:40,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 81420915, now seen corresponding path program 1 times [2024-11-28 02:14:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060374831] [2024-11-28 02:14:40,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:14:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865505390] [2024-11-28 02:14:41,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:41,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:41,045 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:41,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:14:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:41,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-28 02:14:41,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:41,316 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 15 treesize of output 1 [2024-11-28 02:14:41,323 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 02:14:41,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:14:41,814 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 25 treesize of output 17 [2024-11-28 02:14:41,891 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 33 treesize of output 21 [2024-11-28 02:14:42,018 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 22 [2024-11-28 02:14:42,124 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 27 [2024-11-28 02:14:42,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-28 02:14:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:14:42,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:14:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060374831] [2024-11-28 02:14:43,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:14:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865505390] [2024-11-28 02:14:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865505390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:14:43,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:14:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-28 02:14:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038004035] [2024-11-28 02:14:43,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:43,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:14:43,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:43,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:14:43,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:14:43,886 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 23 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:52,001 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 02:14:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:53,665 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2024-11-28 02:14:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:14:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-11-28 02:14:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:53,667 INFO L225 Difference]: With dead ends: 159 [2024-11-28 02:14:53,667 INFO L226 Difference]: Without dead ends: 155 [2024-11-28 02:14:53,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 02:14:53,669 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 205 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:53,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 487 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 601 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 02:14:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-28 02:14:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 139. [2024-11-28 02:14:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 103 states have (on average 1.2718446601941749) internal successors, (131), 120 states have internal predecessors, (131), 10 states have call successors, (10), 8 states have call predecessors, (10), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-28 02:14:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2024-11-28 02:14:53,709 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 48 [2024-11-28 02:14:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:53,709 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2024-11-28 02:14:53,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2024-11-28 02:14:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 02:14:53,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:53,711 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] [2024-11-28 02:14:53,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:14:53,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:53,912 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_30_to_38_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:53,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1044652727, now seen corresponding path program 1 times [2024-11-28 02:14:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:53,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067292887] [2024-11-28 02:14:53,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:53,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:14:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067292887] [2024-11-28 02:14:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067292887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702493515] [2024-11-28 02:14:54,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:54,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:54,785 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:54,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:14:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:55,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:14:55,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:55,064 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 02:14:55,452 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 02:14:55,662 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 02:14:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:14:55,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:14:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702493515] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:14:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 23 [2024-11-28 02:14:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212002442] [2024-11-28 02:14:56,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:56,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:14:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:56,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:14:56,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:14:56,163 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:56,720 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2024-11-28 02:14:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:14:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2024-11-28 02:14:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:56,724 INFO L225 Difference]: With dead ends: 141 [2024-11-28 02:14:56,724 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 02:14:56,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:14:56,725 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 67 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:56,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 426 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:14:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 02:14:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-28 02:14:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 104 states have (on average 1.25) internal successors, (130), 120 states have internal predecessors, (130), 10 states have call successors, (10), 8 states have call predecessors, (10), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 02:14:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 157 transitions. [2024-11-28 02:14:56,781 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 157 transitions. Word has length 59 [2024-11-28 02:14:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:56,782 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 157 transitions. [2024-11-28 02:14:56,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:14:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 157 transitions. [2024-11-28 02:14:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:14:56,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:56,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:56,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:14:56,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:14:56,984 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:14:56,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1293455280, now seen corresponding path program 1 times [2024-11-28 02:14:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617332162] [2024-11-28 02:14:56,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:14:57,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313478899] [2024-11-28 02:14:57,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:57,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:57,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:57,039 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:57,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:14:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:57,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 02:14:57,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:57,342 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 02:14:57,600 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 02:14:58,189 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 17 [2024-11-28 02:14:58,657 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 37 treesize of output 21 [2024-11-28 02:14:58,661 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 33 treesize of output 17 [2024-11-28 02:14:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:14:58,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:15:07,384 WARN L873 $PredicateComparison]: unable to prove that (not (= 9223372036854775807 (let ((.cse0 (select (select |c_#memory_int#3| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|))) (+ .cse0 (* (select (select |c_#memory_int#5| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|) .cse0 .cse0))))) is different from true [2024-11-28 02:15:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 1 not checked. [2024-11-28 02:15:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617332162] [2024-11-28 02:15:11,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:15:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313478899] [2024-11-28 02:15:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313478899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:15:11,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:15:11,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2024-11-28 02:15:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419565406] [2024-11-28 02:15:11,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:15:11,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:15:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:11,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:15:11,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=311, Unknown=2, NotChecked=36, Total=420 [2024-11-28 02:15:11,618 INFO L87 Difference]: Start difference. First operand 140 states and 157 transitions. Second operand has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:15:15,655 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 02:15:19,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 02:15:23,902 WARN L539 Checker$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 02:15:27,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 02:15:32,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 02:15:36,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-28 02:15:53,108 WARN L286 SmtUtils]: Spent 16.51s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:15:57,651 WARN L539 Checker$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 02:15:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:59,328 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2024-11-28 02:15:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:15:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 64 [2024-11-28 02:15:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:59,331 INFO L225 Difference]: With dead ends: 166 [2024-11-28 02:15:59,331 INFO L226 Difference]: Without dead ends: 165 [2024-11-28 02:15:59,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=191, Invalid=741, Unknown=2, NotChecked=58, Total=992 [2024-11-28 02:15:59,333 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 238 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 19 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:59,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 558 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 271 Invalid, 7 Unknown, 163 Unchecked, 29.7s Time] [2024-11-28 02:15:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-28 02:15:59,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 150. [2024-11-28 02:15:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 129 states have internal predecessors, (138), 10 states have call successors, (10), 9 states have call predecessors, (10), 12 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 02:15:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-11-28 02:15:59,387 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 64 [2024-11-28 02:15:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:59,388 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-11-28 02:15:59,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 02:15:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-11-28 02:15:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:15:59,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:59,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:15:59,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 02:15:59,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 02:15:59,592 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_30_to_38_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:15:59,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1442408093, now seen corresponding path program 1 times [2024-11-28 02:15:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327249996] [2024-11-28 02:15:59,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:15:59,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808639694] [2024-11-28 02:15:59,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:59,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:59,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:59,650 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:59,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:15:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:59,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 02:15:59,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:59,982 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 02:16:00,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:16:01,208 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 33 treesize of output 21 [2024-11-28 02:16:06,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-28 02:16:06,093 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 28 treesize of output 12 [2024-11-28 02:16:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:16:06,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:16:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:16:07,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:16:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327249996] [2024-11-28 02:16:07,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:16:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808639694] [2024-11-28 02:16:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808639694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:16:07,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:16:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 26 [2024-11-28 02:16:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816478249] [2024-11-28 02:16:07,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:16:07,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:16:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:16:07,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:16:07,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:16:07,341 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 27 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 10 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:16:11,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:16:21,769 WARN L539 Checker$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 02:16:30,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:16:31,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:16:36,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:16:40,177 WARN L539 Checker$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 02:16:44,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:16:48,209 WARN L539 Checker$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 02:16:52,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 02:16:56,371 WARN L539 Checker$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 02:17:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:05,147 INFO L93 Difference]: Finished difference Result 210 states and 221 transitions. [2024-11-28 02:17:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 02:17:05,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 10 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2024-11-28 02:17:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:05,151 INFO L225 Difference]: With dead ends: 210 [2024-11-28 02:17:05,151 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 02:17:05,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=293, Invalid=1685, Unknown=2, NotChecked=0, Total=1980 [2024-11-28 02:17:05,153 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 411 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 36 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:05,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 880 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 441 Invalid, 9 Unknown, 0 Unchecked, 40.2s Time] [2024-11-28 02:17:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 02:17:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 177. [2024-11-28 02:17:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 136 states have (on average 1.25) internal successors, (170), 153 states have internal predecessors, (170), 12 states have call successors, (12), 10 states have call predecessors, (12), 14 states have return successors, (21), 13 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 02:17:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 203 transitions. [2024-11-28 02:17:05,205 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 203 transitions. Word has length 65 [2024-11-28 02:17:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:05,205 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 203 transitions. [2024-11-28 02:17:05,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 10 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:17:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 203 transitions. [2024-11-28 02:17:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:17:05,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:05,207 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 02:17:05,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:05,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:17:05,408 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:17:05,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1400637969, now seen corresponding path program 1 times [2024-11-28 02:17:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970601401] [2024-11-28 02:17:05,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:17:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336485598] [2024-11-28 02:17:05,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:05,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:05,475 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:05,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:17:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:05,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 02:17:05,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:05,735 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 02:17:05,743 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 02:17:10,762 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_3| Int) (|v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_3| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_3| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_3| Int)) (let ((.cse0 (select (select |c_#memory_int#5| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_3|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_3|))) (<= .cse0 (+ (* (select (select |c_#memory_int#3| |v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_3|) |v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_3|) .cse0) 9223372036854775808)))) is different from true [2024-11-28 02:17:11,009 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 17 [2024-11-28 02:17:11,073 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 21 treesize of output 13 [2024-11-28 02:17:11,079 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 02:17:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:17:11,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:12,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970601401] [2024-11-28 02:17:12,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:17:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336485598] [2024-11-28 02:17:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336485598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:17:12,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:17:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 02:17:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843049003] [2024-11-28 02:17:12,651 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:17:12,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:17:12,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:12,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:17:12,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-28 02:17:12,654 INFO L87 Difference]: Start difference. First operand 177 states and 203 transitions. Second operand has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 02:17:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:42,684 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2024-11-28 02:17:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:17:42,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 66 [2024-11-28 02:17:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:42,688 INFO L225 Difference]: With dead ends: 183 [2024-11-28 02:17:42,688 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 02:17:42,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=112, Invalid=484, Unknown=8, NotChecked=46, Total=650 [2024-11-28 02:17:42,690 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:42,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 200 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 72 Unchecked, 1.3s Time] [2024-11-28 02:17:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 02:17:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2024-11-28 02:17:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 140 states have (on average 1.2428571428571429) internal successors, (174), 156 states have internal predecessors, (174), 12 states have call successors, (12), 10 states have call predecessors, (12), 14 states have return successors, (21), 14 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 02:17:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions. [2024-11-28 02:17:42,773 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 66 [2024-11-28 02:17:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:42,773 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 207 transitions. [2024-11-28 02:17:42,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 02:17:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions. [2024-11-28 02:17:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:17:42,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:42,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:42,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:42,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:17:42,975 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_30_to_38_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-28 02:17:42,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1764978002, now seen corresponding path program 1 times [2024-11-28 02:17:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:42,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222637730] [2024-11-28 02:17:42,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:42,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:17:43,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594630285] [2024-11-28 02:17:43,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:43,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:43,026 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:43,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:17:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:44,081 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:44,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:17:44,385 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:17:44,386 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location func_to_recursive_line_30_to_38_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-28 02:17:44,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-28 02:17:44,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-28 02:17:44,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-28 02:17:44,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-28 02:17:44,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-28 02:17:44,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-28 02:17:44,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-28 02:17:44,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_30_to_38_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-28 02:17:44,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-28 02:17:44,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 02:17:44,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:44,597 INFO L422 BasicCegarLoop]: Path program 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] [2024-11-28 02:17:44,694 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:17:44,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:17:44 BoogieIcfgContainer [2024-11-28 02:17:44,698 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:17:44,699 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:17:44,699 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:17:44,700 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:17:44,701 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:19" (3/4) ... [2024-11-28 02:17:44,702 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 02:17:44,804 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 17. [2024-11-28 02:17:44,915 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:17:44,915 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:17:44,915 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:17:44,919 INFO L158 Benchmark]: Toolchain (without parser) took 326217.65ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 131.2MB in the beginning and 319.9MB in the end (delta: -188.6MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2024-11-28 02:17:44,919 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:17:44,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.97ms. Allocated memory is still 167.8MB. Free memory was 131.2MB in the beginning and 120.1MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:17:44,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.93ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 118.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:17:44,920 INFO L158 Benchmark]: Boogie Preprocessor took 76.69ms. Allocated memory is still 167.8MB. Free memory was 118.7MB in the beginning and 117.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:17:44,920 INFO L158 Benchmark]: RCFGBuilder took 798.96ms. Allocated memory is still 167.8MB. Free memory was 116.8MB in the beginning and 99.0MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:17:44,920 INFO L158 Benchmark]: TraceAbstraction took 324751.94ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 98.4MB in the beginning and 328.2MB in the end (delta: -229.8MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2024-11-28 02:17:44,920 INFO L158 Benchmark]: Witness Printer took 216.23ms. Allocated memory is still 411.0MB. Free memory was 328.2MB in the beginning and 319.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:17:44,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.97ms. Allocated memory is still 167.8MB. Free memory was 131.2MB in the beginning and 120.1MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.93ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 118.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 76.69ms. Allocated memory is still 167.8MB. Free memory was 118.7MB in the beginning and 117.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 798.96ms. Allocated memory is still 167.8MB. Free memory was 116.8MB in the beginning and 99.0MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 324751.94ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 98.4MB in the beginning and 328.2MB in the end (delta: -229.8MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 216.23ms. Allocated memory is still 411.0MB. Free memory was 328.2MB in the beginning and 319.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 67]: integer overflow possible integer overflow possible We found a FailurePath: [L78] int z; [L79] int k; [L80] long long x; [L81] long long y; [L82] long long c; [L83] z = __VERIFIER_nondet_int() [L84] k = __VERIFIER_nondet_int() [L85] EXPR \read(z) [L85] CALL assume_abort_if_not(z >= 1) VAL [\old(cond)=1] [L27] COND FALSE !(!cond) VAL [\old(cond)=1] [L85] RET assume_abort_if_not(z >= 1) VAL [c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L86] EXPR \read(k) [L86] CALL assume_abort_if_not(k >= 1) VAL [\old(cond)=1] [L27] COND FALSE !(!cond) VAL [\old(cond)=1] [L86] RET assume_abort_if_not(k >= 1) VAL [c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L87] x = 1 [L88] EXPR \read(z) [L88] y = z [L89] c = 1 [L90] CALL func_to_recursive_line_30_to_38_0(&z, &y, &k, &x, &c) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}] [L57] EXPR \read(*x) [L57] EXPR \read(*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR (*x) * (*z) [L57] EXPR \read(*x) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR ((*x) * (*z)) - (*x) [L57] EXPR \read(*y) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR (((*x) * (*z)) - (*x)) - (*y) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR ((((*x) * (*z)) - (*x)) - (*y)) + 1 VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] CALL __VERIFIER_assert((((((*x) * (*z)) - (*x)) - (*y)) + 1) == 0) VAL [\old(cond)=1] [L38] COND FALSE !(!cond) VAL [\old(cond)=1] [L57] RET __VERIFIER_assert((((((*x) * (*z)) - (*x)) - (*y)) + 1) == 0) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L58] EXPR \read(*c) [L58] EXPR \read(*k) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L58] COND FALSE !(!((*c) < (*k))) [L65] EXPR \read(*c) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L65] EXPR (*c) + 1 [L65] *c = (*c) + 1 [L66] EXPR \read(*x) [L66] EXPR \read(*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L66] EXPR (*x) * (*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L66] EXPR ((*x) * (*z)) + 1 [L66] *x = ((*x) * (*z)) + 1 [L67] EXPR \read(*y) [L67] EXPR \read(*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L67] EXPR (*y) * (*z) [L67] *y = (*y) * (*z) [L69] CALL func_to_recursive_line_30_to_38_0(z, y, k, x, c) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}] [L57] EXPR \read(*x) [L57] EXPR \read(*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR (*x) * (*z) [L57] EXPR \read(*x) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR ((*x) * (*z)) - (*x) [L57] EXPR \read(*y) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR (((*x) * (*z)) - (*x)) - (*y) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] EXPR ((((*x) * (*z)) - (*x)) - (*y)) + 1 VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L57] CALL __VERIFIER_assert((((((*x) * (*z)) - (*x)) - (*y)) + 1) == 0) VAL [\old(cond)=1] [L38] COND FALSE !(!cond) VAL [\old(cond)=1] [L57] RET __VERIFIER_assert((((((*x) * (*z)) - (*x)) - (*y)) + 1) == 0) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L58] EXPR \read(*c) [L58] EXPR \read(*k) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L58] COND FALSE !(!((*c) < (*k))) [L65] EXPR \read(*c) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L65] EXPR (*c) + 1 [L65] *c = (*c) + 1 [L66] EXPR \read(*x) [L66] EXPR \read(*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L66] EXPR (*x) * (*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L66] EXPR ((*x) * (*z)) + 1 [L66] *x = ((*x) * (*z)) + 1 [L67] EXPR \read(*y) [L67] EXPR \read(*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] [L67] (*y) * (*z) VAL [\old(c)={7:0}, \old(k)={5:0}, \old(x)={6:0}, \old(y)={8:0}, \old(z)={4:0}, c={7:0}, k={5:0}, x={6:0}, y={8:0}, z={4:0}] - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 67]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 79 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 324.5s, OverallIterations: 30, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 237.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 mSolverCounterUnknown, 3124 SdHoareTripleChecker+Valid, 163.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3108 mSDsluCounter, 10175 SdHoareTripleChecker+Invalid, 161.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 235 IncrementalHoareTripleChecker+Unchecked, 8617 mSDsCounter, 256 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6356 IncrementalHoareTripleChecker+Invalid, 6881 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 256 mSolverCounterUnsat, 1558 mSDtfsCounter, 6356 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1558 GetRequests, 1026 SyntacticMatches, 58 SemanticMatches, 474 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 120.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=29, InterpolantAutomatonStates: 367, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 29 MinimizatonAttempts, 245 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 72.4s InterpolantComputationTime, 2219 NumberOfCodeBlocks, 2219 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 1579 ConstructedInterpolants, 321 QuantifiedInterpolants, 19262 SizeOfPredicates, 294 NumberOfNonLiveVariables, 5565 ConjunctsInSsa, 912 ConjunctsInUnsatCore, 40 InterpolantComputations, 15 PerfectInterpolantSequences, 167/358 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 02:17:45,157 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-28 02:17:45,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a246e2-b4e1-4f58-acc9-9cbd2838d724/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)