./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.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_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1 --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 ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 22:59:37,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 22:59:37,371 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-01 22:59:37,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 22:59:37,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 22:59:37,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 22:59:37,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 22:59:37,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 22:59:37,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 22:59:37,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 22:59:37,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 22:59:37,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 22:59:37,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 22:59:37,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 22:59:37,396 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 22:59:37,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 22:59:37,397 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 22:59:37,398 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:59:37,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:59:37,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 22:59:37,398 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 22:59:37,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 22:59:37,399 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_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1 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 -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2024-12-01 22:59:37,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 22:59:37,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 22:59:37,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 22:59:37,625 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 22:59:37,625 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 22:59:37,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-12-01 22:59:40,259 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/data/410f1b8d6/526045e9a0834f06920187a3fded571e/FLAGc4b3e10c4 [2024-12-01 22:59:40,448 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 22:59:40,449 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-12-01 22:59:40,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/data/410f1b8d6/526045e9a0834f06920187a3fded571e/FLAGc4b3e10c4 [2024-12-01 22:59:40,845 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/data/410f1b8d6/526045e9a0834f06920187a3fded571e [2024-12-01 22:59:40,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 22:59:40,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 22:59:40,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 22:59:40,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 22:59:40,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 22:59:40,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:59:40" (1/1) ... [2024-12-01 22:59:40,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe5375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:40, skipping insertion in model container [2024-12-01 22:59:40,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:59:40" (1/1) ... [2024-12-01 22:59:40,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 22:59:40,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 22:59:40,980 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 22:59:40,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 22:59:41,009 INFO L204 MainTranslator]: Completed translation [2024-12-01 22:59:41,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41 WrapperNode [2024-12-01 22:59:41,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 22:59:41,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 22:59:41,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 22:59:41,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 22:59:41,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,038 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-12-01 22:59:41,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 22:59:41,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 22:59:41,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 22:59:41,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 22:59:41,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,061 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 2, 9, 12, 8]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-12-01 22:59:41,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,067 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 22:59:41,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 22:59:41,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 22:59:41,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 22:59:41,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (1/1) ... [2024-12-01 22:59:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:59:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:41,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 22:59:41,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 22:59:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 22:59:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 22:59:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-12-01 22:59:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-12-01 22:59:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 22:59:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-01 22:59:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-01 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 22:59:41,197 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 22:59:41,198 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 22:59:41,514 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-12-01 22:59:41,514 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 22:59:41,523 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 22:59:41,523 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-01 22:59:41,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:59:41 BoogieIcfgContainer [2024-12-01 22:59:41,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 22:59:41,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 22:59:41,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 22:59:41,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 22:59:41,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:59:40" (1/3) ... [2024-12-01 22:59:41,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe93c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:59:41, skipping insertion in model container [2024-12-01 22:59:41,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:59:41" (2/3) ... [2024-12-01 22:59:41,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe93c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:59:41, skipping insertion in model container [2024-12-01 22:59:41,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:59:41" (3/3) ... [2024-12-01 22:59:41,529 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-12-01 22:59:41,541 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 22:59:41,542 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_sqrt1-ll.c that has 3 procedures, 131 locations, 1 initial locations, 0 loop locations, and 50 error locations. [2024-12-01 22:59:41,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 22:59:41,603 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;@4a33170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 22:59:41,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-12-01 22:59:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-01 22:59:41,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-01 22:59:41,612 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:41,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-01 22:59:41,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:41,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608053, now seen corresponding path program 1 times [2024-12-01 22:59:41,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:41,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792700428] [2024-12-01 22:59:41,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 22:59:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792700428] [2024-12-01 22:59:41,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792700428] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:41,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:41,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547574402] [2024-12-01 22:59:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:41,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:41,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:42,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:42,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:42,013 INFO L87 Difference]: Start difference. First operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 22:59:42,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:42,208 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-12-01 22:59:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:42,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-01 22:59:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:42,216 INFO L225 Difference]: With dead ends: 328 [2024-12-01 22:59:42,216 INFO L226 Difference]: Without dead ends: 194 [2024-12-01 22:59:42,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:42,222 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 118 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:42,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 588 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-01 22:59:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2024-12-01 22:59:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 144 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-12-01 22:59:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-12-01 22:59:42,263 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 6 [2024-12-01 22:59:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:42,263 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-12-01 22:59:42,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 22:59:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-12-01 22:59:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-01 22:59:42,264 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:42,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:42,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 22:59:42,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:42,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1492751008, now seen corresponding path program 1 times [2024-12-01 22:59:42,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187620269] [2024-12-01 22:59:42,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:42,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 22:59:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187620269] [2024-12-01 22:59:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187620269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:42,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:42,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:42,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48336548] [2024-12-01 22:59:42,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:42,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:42,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:42,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:42,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:42,463 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 22:59:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:42,610 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-12-01 22:59:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-12-01 22:59:42,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:42,612 INFO L225 Difference]: With dead ends: 194 [2024-12-01 22:59:42,612 INFO L226 Difference]: Without dead ends: 192 [2024-12-01 22:59:42,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:42,613 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 113 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:42,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 553 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-12-01 22:59:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157. [2024-12-01 22:59:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 144 states have internal predecessors, (161), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-12-01 22:59:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-12-01 22:59:42,627 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 16 [2024-12-01 22:59:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:42,627 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-12-01 22:59:42,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 22:59:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-12-01 22:59:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-01 22:59:42,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:42,628 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:42,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 22:59:42,628 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:42,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash -14640318, now seen corresponding path program 1 times [2024-12-01 22:59:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760270567] [2024-12-01 22:59:42,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 22:59:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760270567] [2024-12-01 22:59:42,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760270567] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:42,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:42,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:42,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898991321] [2024-12-01 22:59:42,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:42,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:42,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:42,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:42,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:42,754 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 22:59:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:42,886 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2024-12-01 22:59:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-12-01 22:59:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:42,888 INFO L225 Difference]: With dead ends: 192 [2024-12-01 22:59:42,888 INFO L226 Difference]: Without dead ends: 190 [2024-12-01 22:59:42,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:42,889 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:42,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 550 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-12-01 22:59:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2024-12-01 22:59:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 144 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-12-01 22:59:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2024-12-01 22:59:42,900 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 18 [2024-12-01 22:59:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:42,900 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2024-12-01 22:59:42,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 22:59:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2024-12-01 22:59:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-01 22:59:42,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:42,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:42,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 22:59:42,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:42,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1184442076, now seen corresponding path program 1 times [2024-12-01 22:59:42,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:42,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118740564] [2024-12-01 22:59:42,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:42,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 22:59:42,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337236024] [2024-12-01 22:59:42,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:42,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:42,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:42,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:42,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 22:59:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:43,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-01 22:59:43,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:43,046 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 [2024-12-01 22:59:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 22:59:43,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:43,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:43,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118740564] [2024-12-01 22:59:43,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 22:59:43,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337236024] [2024-12-01 22:59:43,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337236024] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:43,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:43,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-01 22:59:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416180534] [2024-12-01 22:59:43,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:43,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-01 22:59:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:43,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-01 22:59:43,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-01 22:59:43,222 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 22:59:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:43,641 INFO L93 Difference]: Finished difference Result 216 states and 227 transitions. [2024-12-01 22:59:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 22:59:43,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-12-01 22:59:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:43,643 INFO L225 Difference]: With dead ends: 216 [2024-12-01 22:59:43,643 INFO L226 Difference]: Without dead ends: 214 [2024-12-01 22:59:43,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-01 22:59:43,645 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:43,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 976 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 22:59:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-12-01 22:59:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 157. [2024-12-01 22:59:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 144 states have internal predecessors, (157), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-12-01 22:59:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2024-12-01 22:59:43,657 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 20 [2024-12-01 22:59:43,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:43,658 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2024-12-01 22:59:43,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 22:59:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2024-12-01 22:59:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-01 22:59:43,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:43,658 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] [2024-12-01 22:59:43,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 22:59:43,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:43,859 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:43,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash -744717107, now seen corresponding path program 1 times [2024-12-01 22:59:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:43,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19200570] [2024-12-01 22:59:43,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 22:59:43,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47920046] [2024-12-01 22:59:43,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:43,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:43,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:43,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 22:59:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:43,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-01 22:59:43,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:43,972 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 [2024-12-01 22:59:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:44,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19200570] [2024-12-01 22:59:44,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 22:59:44,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47920046] [2024-12-01 22:59:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47920046] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:44,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311910375] [2024-12-01 22:59:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:44,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:44,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:44,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:44,122 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-12-01 22:59:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:44,283 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-12-01 22:59:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 28 [2024-12-01 22:59:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:44,285 INFO L225 Difference]: With dead ends: 230 [2024-12-01 22:59:44,285 INFO L226 Difference]: Without dead ends: 229 [2024-12-01 22:59:44,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-01 22:59:44,286 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 181 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:44,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 516 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-12-01 22:59:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 175. [2024-12-01 22:59:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6605504587155964) internal successors, (181), 159 states have internal predecessors, (181), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2024-12-01 22:59:44,299 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 28 [2024-12-01 22:59:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:44,299 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2024-12-01 22:59:44,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-12-01 22:59:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2024-12-01 22:59:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-01 22:59:44,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:44,300 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] [2024-12-01 22:59:44,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 22:59:44,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:44,500 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:44,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1611393776, now seen corresponding path program 1 times [2024-12-01 22:59:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880959707] [2024-12-01 22:59:44,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 22:59:44,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114999794] [2024-12-01 22:59:44,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:44,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:44,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:44,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 22:59:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:44,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-01 22:59:44,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:44,606 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 [2024-12-01 22:59:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:44,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880959707] [2024-12-01 22:59:44,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 22:59:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114999794] [2024-12-01 22:59:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114999794] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:44,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093081376] [2024-12-01 22:59:44,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:44,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:44,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:44,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:44,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:44,744 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-12-01 22:59:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:44,911 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-12-01 22:59:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:44,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 29 [2024-12-01 22:59:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:44,912 INFO L225 Difference]: With dead ends: 229 [2024-12-01 22:59:44,913 INFO L226 Difference]: Without dead ends: 228 [2024-12-01 22:59:44,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-01 22:59:44,913 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 142 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:44,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 570 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-12-01 22:59:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-12-01 22:59:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.651376146788991) internal successors, (180), 159 states have internal predecessors, (180), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-12-01 22:59:44,923 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 29 [2024-12-01 22:59:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:44,923 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-12-01 22:59:44,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-12-01 22:59:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-12-01 22:59:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-01 22:59:44,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:44,924 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] [2024-12-01 22:59:44,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 22:59:45,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:45,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:45,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1586400559, now seen corresponding path program 1 times [2024-12-01 22:59:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677173399] [2024-12-01 22:59:45,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:45,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:45,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677173399] [2024-12-01 22:59:45,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677173399] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:45,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:45,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:45,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294682674] [2024-12-01 22:59:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:45,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:45,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:45,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:45,245 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:45,377 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-12-01 22:59:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-12-01 22:59:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:45,378 INFO L225 Difference]: With dead ends: 212 [2024-12-01 22:59:45,379 INFO L226 Difference]: Without dead ends: 210 [2024-12-01 22:59:45,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:45,379 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 121 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:45,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 527 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-12-01 22:59:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-12-01 22:59:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6330275229357798) internal successors, (178), 159 states have internal predecessors, (178), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-12-01 22:59:45,389 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 30 [2024-12-01 22:59:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:45,390 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-12-01 22:59:45,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-12-01 22:59:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-01 22:59:45,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:45,390 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] [2024-12-01 22:59:45,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 22:59:45,391 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:45,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash -182450799, now seen corresponding path program 1 times [2024-12-01 22:59:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:45,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579061939] [2024-12-01 22:59:45,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:45,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 22:59:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191256900] [2024-12-01 22:59:45,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:45,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:45,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:45,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:45,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 22:59:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:45,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-01 22:59:45,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:45,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 22:59:45,500 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 11 treesize of output 7 [2024-12-01 22:59:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:45,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579061939] [2024-12-01 22:59:45,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 22:59:45,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191256900] [2024-12-01 22:59:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191256900] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 22:59:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284033385] [2024-12-01 22:59:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:45,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 22:59:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:45,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 22:59:45,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:45,758 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-12-01 22:59:46,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:46,002 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2024-12-01 22:59:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:59:46,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 32 [2024-12-01 22:59:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:46,004 INFO L225 Difference]: With dead ends: 226 [2024-12-01 22:59:46,004 INFO L226 Difference]: Without dead ends: 224 [2024-12-01 22:59:46,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-12-01 22:59:46,005 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 201 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:46,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 522 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 22:59:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-12-01 22:59:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 175. [2024-12-01 22:59:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.614678899082569) internal successors, (176), 159 states have internal predecessors, (176), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-12-01 22:59:46,014 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 32 [2024-12-01 22:59:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:46,014 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-12-01 22:59:46,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-12-01 22:59:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-12-01 22:59:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 22:59:46,014 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:46,015 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] [2024-12-01 22:59:46,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 22:59:46,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:46,215 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:46,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash 758443507, now seen corresponding path program 1 times [2024-12-01 22:59:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:46,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818589102] [2024-12-01 22:59:46,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:46,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:46,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:46,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818589102] [2024-12-01 22:59:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818589102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:46,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:46,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511590039] [2024-12-01 22:59:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:46,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:46,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:46,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:46,359 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:46,470 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-12-01 22:59:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-12-01 22:59:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:46,472 INFO L225 Difference]: With dead ends: 212 [2024-12-01 22:59:46,472 INFO L226 Difference]: Without dead ends: 210 [2024-12-01 22:59:46,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:46,473 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 103 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:46,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 533 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-12-01 22:59:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-12-01 22:59:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5963302752293578) internal successors, (174), 159 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-12-01 22:59:46,481 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 34 [2024-12-01 22:59:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:46,481 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-12-01 22:59:46,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-12-01 22:59:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-01 22:59:46,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:46,482 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] [2024-12-01 22:59:46,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 22:59:46,482 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_40_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:46,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:46,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1280227755, now seen corresponding path program 1 times [2024-12-01 22:59:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111413971] [2024-12-01 22:59:46,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111413971] [2024-12-01 22:59:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111413971] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:46,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:46,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799240199] [2024-12-01 22:59:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:46,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:46,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:46,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:46,615 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:46,786 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2024-12-01 22:59:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-12-01 22:59:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:46,788 INFO L225 Difference]: With dead ends: 210 [2024-12-01 22:59:46,788 INFO L226 Difference]: Without dead ends: 208 [2024-12-01 22:59:46,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-01 22:59:46,788 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 104 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:46,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 546 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-12-01 22:59:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-12-01 22:59:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5779816513761469) internal successors, (172), 159 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2024-12-01 22:59:46,796 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 36 [2024-12-01 22:59:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:46,796 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2024-12-01 22:59:46,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2024-12-01 22:59:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 22:59:46,797 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:46,797 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] [2024-12-01 22:59:46,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 22:59:46,797 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_40_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:46,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1032354664, now seen corresponding path program 1 times [2024-12-01 22:59:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850402096] [2024-12-01 22:59:46,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 22:59:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:47,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850402096] [2024-12-01 22:59:47,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850402096] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:47,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:47,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042836709] [2024-12-01 22:59:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:47,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:47,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:47,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:47,044 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:47,414 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2024-12-01 22:59:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-12-01 22:59:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:47,416 INFO L225 Difference]: With dead ends: 200 [2024-12-01 22:59:47,416 INFO L226 Difference]: Without dead ends: 198 [2024-12-01 22:59:47,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-12-01 22:59:47,417 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 95 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:47,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 585 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 22:59:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-01 22:59:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-12-01 22:59:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 159 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-12-01 22:59:47,425 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 37 [2024-12-01 22:59:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:47,425 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-12-01 22:59:47,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 22:59:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-12-01 22:59:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-01 22:59:47,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:47,426 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:47,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 22:59:47,426 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_40_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:47,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2054185613, now seen corresponding path program 1 times [2024-12-01 22:59:47,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:47,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869971444] [2024-12-01 22:59:47,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:47,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:47,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869971444] [2024-12-01 22:59:47,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869971444] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:47,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:47,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:47,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647920886] [2024-12-01 22:59:47,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:47,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:47,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:47,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:47,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:47,582 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:47,668 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2024-12-01 22:59:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:47,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-12-01 22:59:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:47,670 INFO L225 Difference]: With dead ends: 185 [2024-12-01 22:59:47,670 INFO L226 Difference]: Without dead ends: 183 [2024-12-01 22:59:47,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:47,671 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:47,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 566 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-01 22:59:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-12-01 22:59:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 161 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2024-12-01 22:59:47,679 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 47 [2024-12-01 22:59:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:47,679 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2024-12-01 22:59:47,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2024-12-01 22:59:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 22:59:47,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:47,680 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:47,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 22:59:47,680 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_40_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:47,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1612579153, now seen corresponding path program 1 times [2024-12-01 22:59:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:47,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893700010] [2024-12-01 22:59:47,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:47,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:47,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893700010] [2024-12-01 22:59:47,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893700010] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:47,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:47,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551635652] [2024-12-01 22:59:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:47,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:47,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:47,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:47,830 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:47,922 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2024-12-01 22:59:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:47,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-12-01 22:59:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:47,923 INFO L225 Difference]: With dead ends: 204 [2024-12-01 22:59:47,923 INFO L226 Difference]: Without dead ends: 202 [2024-12-01 22:59:47,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:59:47,924 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 72 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:47,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 561 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-12-01 22:59:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2024-12-01 22:59:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 163 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-12-01 22:59:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-12-01 22:59:47,932 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 49 [2024-12-01 22:59:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:47,932 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-12-01 22:59:47,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-12-01 22:59:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-01 22:59:47,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:47,933 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:47,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 22:59:47,933 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:47,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:47,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1549267133, now seen corresponding path program 1 times [2024-12-01 22:59:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:47,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358057622] [2024-12-01 22:59:47,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358057622] [2024-12-01 22:59:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358057622] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:59:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044822024] [2024-12-01 22:59:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 22:59:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:48,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 22:59:48,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 22:59:48,044 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:48,134 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2024-12-01 22:59:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:59:48,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-12-01 22:59:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:48,135 INFO L225 Difference]: With dead ends: 187 [2024-12-01 22:59:48,135 INFO L226 Difference]: Without dead ends: 183 [2024-12-01 22:59:48,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:48,136 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 42 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:48,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 366 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-01 22:59:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-12-01 22:59:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-12-01 22:59:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-12-01 22:59:48,144 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-12-01 22:59:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:48,144 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-12-01 22:59:48,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-12-01 22:59:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-01 22:59:48,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:48,146 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:48,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 22:59:48,146 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_40_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:48,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 794630865, now seen corresponding path program 1 times [2024-12-01 22:59:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:48,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735964634] [2024-12-01 22:59:48,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:48,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:48,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735964634] [2024-12-01 22:59:48,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735964634] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:48,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:48,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759251087] [2024-12-01 22:59:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:48,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:48,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:48,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:48,467 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:48,620 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2024-12-01 22:59:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:48,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-12-01 22:59:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:48,622 INFO L225 Difference]: With dead ends: 195 [2024-12-01 22:59:48,622 INFO L226 Difference]: Without dead ends: 194 [2024-12-01 22:59:48,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 22:59:48,623 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 60 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:48,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 621 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-01 22:59:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2024-12-01 22:59:48,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-12-01 22:59:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-12-01 22:59:48,631 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-12-01 22:59:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:48,631 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-12-01 22:59:48,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-12-01 22:59:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-01 22:59:48,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:48,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:48,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 22:59:48,633 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_40_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:48,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1136246862, now seen corresponding path program 1 times [2024-12-01 22:59:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634213865] [2024-12-01 22:59:48,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:48,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634213865] [2024-12-01 22:59:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634213865] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584276906] [2024-12-01 22:59:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:48,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:48,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:48,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:48,937 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:49,090 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2024-12-01 22:59:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-12-01 22:59:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:49,092 INFO L225 Difference]: With dead ends: 195 [2024-12-01 22:59:49,092 INFO L226 Difference]: Without dead ends: 194 [2024-12-01 22:59:49,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 22:59:49,092 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 59 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:49,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 626 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-01 22:59:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2024-12-01 22:59:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 166 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-12-01 22:59:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2024-12-01 22:59:49,101 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 52 [2024-12-01 22:59:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:49,101 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2024-12-01 22:59:49,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-01 22:59:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2024-12-01 22:59:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-01 22:59:49,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:49,102 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:49,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-01 22:59:49,102 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:49,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060323, now seen corresponding path program 1 times [2024-12-01 22:59:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:49,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55673194] [2024-12-01 22:59:49,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:49,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55673194] [2024-12-01 22:59:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55673194] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:59:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769387357] [2024-12-01 22:59:49,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:49,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:49,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:49,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 22:59:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:49,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-01 22:59:49,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:49,718 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 38 treesize of output 15 [2024-12-01 22:59:49,762 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 [2024-12-01 22:59:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:49,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 22:59:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:49,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769387357] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 22:59:49,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 22:59:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-12-01 22:59:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190903045] [2024-12-01 22:59:49,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 22:59:49,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-01 22:59:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:49,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-01 22:59:49,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-12-01 22:59:49,967 INFO L87 Difference]: Start difference. First operand 183 states and 199 transitions. Second operand has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 17 states have internal predecessors, (119), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 22:59:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:50,323 INFO L93 Difference]: Finished difference Result 188 states and 206 transitions. [2024-12-01 22:59:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 22:59:50,323 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 17 states have internal predecessors, (119), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2024-12-01 22:59:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:50,325 INFO L225 Difference]: With dead ends: 188 [2024-12-01 22:59:50,325 INFO L226 Difference]: Without dead ends: 185 [2024-12-01 22:59:50,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-12-01 22:59:50,325 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 400 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:50,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1149 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 22:59:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-12-01 22:59:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2024-12-01 22:59:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-12-01 22:59:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-12-01 22:59:50,333 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 56 [2024-12-01 22:59:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:50,333 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-12-01 22:59:50,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 17 states have internal predecessors, (119), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 22:59:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-12-01 22:59:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-01 22:59:50,334 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:50,334 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:50,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 22:59:50,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 22:59:50,535 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:50,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1165197016, now seen corresponding path program 1 times [2024-12-01 22:59:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:50,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219015342] [2024-12-01 22:59:50,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:50,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219015342] [2024-12-01 22:59:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219015342] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:59:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472306884] [2024-12-01 22:59:50,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:50,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:50,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:50,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 22:59:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:50,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-01 22:59:50,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:50,843 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 [2024-12-01 22:59:51,054 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 [2024-12-01 22:59:51,075 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 [2024-12-01 22:59:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:51,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 22:59:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472306884] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 22:59:51,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 22:59:51,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-12-01 22:59:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326465064] [2024-12-01 22:59:51,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 22:59:51,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-01 22:59:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:51,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-01 22:59:51,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-12-01 22:59:51,230 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 21 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 states have internal predecessors, (116), 8 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 22:59:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:51,584 INFO L93 Difference]: Finished difference Result 334 states and 356 transitions. [2024-12-01 22:59:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-01 22:59:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 states have internal predecessors, (116), 8 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2024-12-01 22:59:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:51,586 INFO L225 Difference]: With dead ends: 334 [2024-12-01 22:59:51,586 INFO L226 Difference]: Without dead ends: 331 [2024-12-01 22:59:51,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2024-12-01 22:59:51,587 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 421 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:51,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1283 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 22:59:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-12-01 22:59:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 257. [2024-12-01 22:59:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.521978021978022) internal successors, (277), 230 states have internal predecessors, (277), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 323 transitions. [2024-12-01 22:59:51,599 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 323 transitions. Word has length 57 [2024-12-01 22:59:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:51,599 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 323 transitions. [2024-12-01 22:59:51,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 states have internal predecessors, (116), 8 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 22:59:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 323 transitions. [2024-12-01 22:59:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-01 22:59:51,600 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:51,600 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:51,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 22:59:51,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-01 22:59:51,800 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:51,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1285119462, now seen corresponding path program 1 times [2024-12-01 22:59:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194093069] [2024-12-01 22:59:51,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 22:59:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194093069] [2024-12-01 22:59:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194093069] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:51,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:51,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:59:51,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885855699] [2024-12-01 22:59:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:51,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 22:59:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:51,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 22:59:51,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 22:59:51,875 INFO L87 Difference]: Start difference. First operand 257 states and 323 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 22:59:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:51,972 INFO L93 Difference]: Finished difference Result 262 states and 324 transitions. [2024-12-01 22:59:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-12-01 22:59:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:51,974 INFO L225 Difference]: With dead ends: 262 [2024-12-01 22:59:51,974 INFO L226 Difference]: Without dead ends: 260 [2024-12-01 22:59:51,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:51,975 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:51,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 348 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-12-01 22:59:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2024-12-01 22:59:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.510989010989011) internal successors, (275), 230 states have internal predecessors, (275), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2024-12-01 22:59:51,988 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 60 [2024-12-01 22:59:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:51,988 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2024-12-01 22:59:51,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 22:59:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2024-12-01 22:59:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-01 22:59:51,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:51,989 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:51,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 22:59:51,989 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:51,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1950782204, now seen corresponding path program 1 times [2024-12-01 22:59:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:51,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647483868] [2024-12-01 22:59:51,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:51,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 22:59:52,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:52,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647483868] [2024-12-01 22:59:52,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647483868] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:52,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:52,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:59:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109509272] [2024-12-01 22:59:52,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:52,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 22:59:52,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:52,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 22:59:52,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 22:59:52,123 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 22:59:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:52,219 INFO L93 Difference]: Finished difference Result 260 states and 322 transitions. [2024-12-01 22:59:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:59:52,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-12-01 22:59:52,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:52,221 INFO L225 Difference]: With dead ends: 260 [2024-12-01 22:59:52,221 INFO L226 Difference]: Without dead ends: 258 [2024-12-01 22:59:52,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 22:59:52,222 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 29 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:52,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 343 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-12-01 22:59:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-12-01 22:59:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.5) internal successors, (273), 230 states have internal predecessors, (273), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 319 transitions. [2024-12-01 22:59:52,237 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 319 transitions. Word has length 62 [2024-12-01 22:59:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:52,238 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 319 transitions. [2024-12-01 22:59:52,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 22:59:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 319 transitions. [2024-12-01 22:59:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 22:59:52,238 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:52,238 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:52,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 22:59:52,239 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:52,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2095961054, now seen corresponding path program 1 times [2024-12-01 22:59:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:52,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873136570] [2024-12-01 22:59:52,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 22:59:52,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7388188] [2024-12-01 22:59:52,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:52,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:52,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 22:59:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:52,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-01 22:59:52,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:52,361 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 [2024-12-01 22:59:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:52,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:52,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873136570] [2024-12-01 22:59:52,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 22:59:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7388188] [2024-12-01 22:59:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7388188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:52,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096295789] [2024-12-01 22:59:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:52,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:59:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:52,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:59:52,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:52,465 INFO L87 Difference]: Start difference. First operand 257 states and 319 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 22:59:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:52,625 INFO L93 Difference]: Finished difference Result 284 states and 343 transitions. [2024-12-01 22:59:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:59:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-12-01 22:59:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:52,627 INFO L225 Difference]: With dead ends: 284 [2024-12-01 22:59:52,627 INFO L226 Difference]: Without dead ends: 282 [2024-12-01 22:59:52,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-01 22:59:52,628 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 92 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:52,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 535 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 145 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-12-01 22:59:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-12-01 22:59:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.489010989010989) internal successors, (271), 230 states have internal predecessors, (271), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 317 transitions. [2024-12-01 22:59:52,642 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 317 transitions. Word has length 64 [2024-12-01 22:59:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:52,642 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 317 transitions. [2024-12-01 22:59:52,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 22:59:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 317 transitions. [2024-12-01 22:59:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 22:59:52,643 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:52,643 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:52,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 22:59:52,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:52,844 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:52,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 322785458, now seen corresponding path program 1 times [2024-12-01 22:59:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:52,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866360879] [2024-12-01 22:59:52,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-01 22:59:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866360879] [2024-12-01 22:59:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866360879] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728624845] [2024-12-01 22:59:52,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:52,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:52,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:52,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:52,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:52,934 INFO L87 Difference]: Start difference. First operand 257 states and 317 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:53,006 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2024-12-01 22:59:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-12-01 22:59:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:53,008 INFO L225 Difference]: With dead ends: 257 [2024-12-01 22:59:53,008 INFO L226 Difference]: Without dead ends: 256 [2024-12-01 22:59:53,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:53,010 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:53,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 369 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-12-01 22:59:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-12-01 22:59:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 182 states have (on average 1.4725274725274726) internal successors, (268), 229 states have internal predecessors, (268), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 314 transitions. [2024-12-01 22:59:53,024 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 314 transitions. Word has length 66 [2024-12-01 22:59:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:53,024 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 314 transitions. [2024-12-01 22:59:53,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 314 transitions. [2024-12-01 22:59:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 22:59:53,025 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:53,025 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:53,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-01 22:59:53,025 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_29_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:53,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1416414653, now seen corresponding path program 1 times [2024-12-01 22:59:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:53,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720306974] [2024-12-01 22:59:53,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:53,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-01 22:59:53,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:53,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720306974] [2024-12-01 22:59:53,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720306974] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:53,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:53,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245902453] [2024-12-01 22:59:53,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:53,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:53,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:53,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:53,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:53,104 INFO L87 Difference]: Start difference. First operand 256 states and 314 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:53,171 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2024-12-01 22:59:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-12-01 22:59:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:53,173 INFO L225 Difference]: With dead ends: 256 [2024-12-01 22:59:53,173 INFO L226 Difference]: Without dead ends: 255 [2024-12-01 22:59:53,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:53,174 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 49 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:53,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 369 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:59:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-12-01 22:59:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-12-01 22:59:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 182 states have (on average 1.456043956043956) internal successors, (265), 228 states have internal predecessors, (265), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 311 transitions. [2024-12-01 22:59:53,188 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 311 transitions. Word has length 67 [2024-12-01 22:59:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:53,188 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 311 transitions. [2024-12-01 22:59:53,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 311 transitions. [2024-12-01 22:59:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-01 22:59:53,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:53,189 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:53,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-01 22:59:53,189 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:53,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:53,189 INFO L85 PathProgramCache]: Analyzing trace with hash 959181332, now seen corresponding path program 1 times [2024-12-01 22:59:53,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:53,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725986114] [2024-12-01 22:59:53,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:53,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-01 22:59:53,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:53,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725986114] [2024-12-01 22:59:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725986114] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:53,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865916783] [2024-12-01 22:59:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:53,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:53,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:53,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:53,271 INFO L87 Difference]: Start difference. First operand 255 states and 311 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:53,348 INFO L93 Difference]: Finished difference Result 255 states and 311 transitions. [2024-12-01 22:59:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-12-01 22:59:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:53,350 INFO L225 Difference]: With dead ends: 255 [2024-12-01 22:59:53,350 INFO L226 Difference]: Without dead ends: 254 [2024-12-01 22:59:53,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:53,350 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 44 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:53,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 395 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-12-01 22:59:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-12-01 22:59:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 227 states have internal predecessors, (262), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2024-12-01 22:59:53,364 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 68 [2024-12-01 22:59:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:53,364 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2024-12-01 22:59:53,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2024-12-01 22:59:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-01 22:59:53,365 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:53,365 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:53,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-01 22:59:53,365 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_29_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:53,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -330149729, now seen corresponding path program 1 times [2024-12-01 22:59:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752984087] [2024-12-01 22:59:53,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-01 22:59:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752984087] [2024-12-01 22:59:53,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752984087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:53,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:53,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 22:59:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560379781] [2024-12-01 22:59:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:53,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:53,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:53,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:53,445 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:53,515 INFO L93 Difference]: Finished difference Result 254 states and 308 transitions. [2024-12-01 22:59:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 22:59:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-12-01 22:59:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:53,517 INFO L225 Difference]: With dead ends: 254 [2024-12-01 22:59:53,517 INFO L226 Difference]: Without dead ends: 253 [2024-12-01 22:59:53,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:59:53,518 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:53,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 364 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:59:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-12-01 22:59:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-12-01 22:59:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 226 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-12-01 22:59:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-12-01 22:59:53,534 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 69 [2024-12-01 22:59:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:53,534 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-12-01 22:59:53,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-12-01 22:59:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-01 22:59:53,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:53,535 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:53,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-01 22:59:53,536 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 22:59:53,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1644706954, now seen corresponding path program 1 times [2024-12-01 22:59:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:53,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140190700] [2024-12-01 22:59:53,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 22:59:53,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278700062] [2024-12-01 22:59:53,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:53,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:53,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:53,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:53,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 22:59:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:53,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-01 22:59:53,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:53,685 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 [2024-12-01 22:59:53,689 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 [2024-12-01 22:59:53,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-12-01 22:59:53,937 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 [2024-12-01 22:59:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:59:53,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 22:59:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140190700] [2024-12-01 22:59:54,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 22:59:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278700062] [2024-12-01 22:59:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278700062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:59:54,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:59:54,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-12-01 22:59:54,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500400477] [2024-12-01 22:59:54,100 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-01 22:59:54,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-01 22:59:54,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:54,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-01 22:59:54,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-12-01 22:59:54,102 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 13 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 22:59:58,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:02,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:06,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:06,412 INFO L93 Difference]: Finished difference Result 345 states and 382 transitions. [2024-12-01 23:00:06,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 23:00:06,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2024-12-01 23:00:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:06,416 INFO L225 Difference]: With dead ends: 345 [2024-12-01 23:00:06,416 INFO L226 Difference]: Without dead ends: 344 [2024-12-01 23:00:06,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-12-01 23:00:06,416 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 283 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:06,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 875 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 247 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-12-01 23:00:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-12-01 23:00:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 271. [2024-12-01 23:00:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 197 states have (on average 1.4365482233502538) internal successors, (283), 241 states have internal predecessors, (283), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-01 23:00:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 333 transitions. [2024-12-01 23:00:06,430 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 333 transitions. Word has length 70 [2024-12-01 23:00:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:06,430 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 333 transitions. [2024-12-01 23:00:06,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:00:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 333 transitions. [2024-12-01 23:00:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-01 23:00:06,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:06,431 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:06,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 23:00:06,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-01 23:00:06,631 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_29_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:06,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash 553692033, now seen corresponding path program 1 times [2024-12-01 23:00:06,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:06,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661504474] [2024-12-01 23:00:06,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:00:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354302535] [2024-12-01 23:00:06,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:06,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:06,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:06,657 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:06,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 23:00:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:06,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-01 23:00:06,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:06,783 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 [2024-12-01 23:00:06,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 23:00:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 23:00:07,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:00:07,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:07,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661504474] [2024-12-01 23:00:07,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:00:07,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354302535] [2024-12-01 23:00:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354302535] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:00:07,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:00:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-12-01 23:00:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141766564] [2024-12-01 23:00:07,242 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-01 23:00:07,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-01 23:00:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:07,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-01 23:00:07,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-12-01 23:00:07,243 INFO L87 Difference]: Start difference. First operand 271 states and 333 transitions. Second operand has 16 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-01 23:00:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:07,877 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2024-12-01 23:00:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-01 23:00:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2024-12-01 23:00:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:07,878 INFO L225 Difference]: With dead ends: 344 [2024-12-01 23:00:07,878 INFO L226 Difference]: Without dead ends: 343 [2024-12-01 23:00:07,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-12-01 23:00:07,879 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 262 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:07,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1727 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:00:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-12-01 23:00:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 271. [2024-12-01 23:00:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 197 states have (on average 1.4314720812182742) internal successors, (282), 241 states have internal predecessors, (282), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-01 23:00:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 332 transitions. [2024-12-01 23:00:07,889 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 332 transitions. Word has length 71 [2024-12-01 23:00:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:07,889 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 332 transitions. [2024-12-01 23:00:07,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-01 23:00:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 332 transitions. [2024-12-01 23:00:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 23:00:07,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:07,890 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:07,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 23:00:08,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:08,090 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:08,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash 656013135, now seen corresponding path program 1 times [2024-12-01 23:00:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577138974] [2024-12-01 23:00:08,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:00:08,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199908692] [2024-12-01 23:00:08,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:08,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:08,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:08,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:08,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:00:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:08,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 23:00:08,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:08,218 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 [2024-12-01 23:00:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:00:08,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:00:08,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:08,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577138974] [2024-12-01 23:00:08,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:00:08,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199908692] [2024-12-01 23:00:08,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199908692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:08,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:08,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:00:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134942457] [2024-12-01 23:00:08,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:08,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:00:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:08,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:00:08,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:00:08,310 INFO L87 Difference]: Start difference. First operand 271 states and 332 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:08,459 INFO L93 Difference]: Finished difference Result 296 states and 356 transitions. [2024-12-01 23:00:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:00:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-12-01 23:00:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:08,461 INFO L225 Difference]: With dead ends: 296 [2024-12-01 23:00:08,462 INFO L226 Difference]: Without dead ends: 295 [2024-12-01 23:00:08,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:00:08,462 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 103 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:08,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 404 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:00:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-12-01 23:00:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 273. [2024-12-01 23:00:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 199 states have (on average 1.4271356783919598) internal successors, (284), 242 states have internal predecessors, (284), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-01 23:00:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 334 transitions. [2024-12-01 23:00:08,477 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 334 transitions. Word has length 72 [2024-12-01 23:00:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:08,478 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 334 transitions. [2024-12-01 23:00:08,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 334 transitions. [2024-12-01 23:00:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-01 23:00:08,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:08,478 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:08,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 23:00:08,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-01 23:00:08,679 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:08,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1138429158, now seen corresponding path program 1 times [2024-12-01 23:00:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:08,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469083115] [2024-12-01 23:00:08,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:08,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:00:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053451182] [2024-12-01 23:00:08,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:08,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:08,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:08,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:08,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 23:00:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:08,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:00:08,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:08,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 23:00:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:00:08,922 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:00:08,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469083115] [2024-12-01 23:00:08,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:00:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053451182] [2024-12-01 23:00:08,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053451182] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:08,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:08,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:00:08,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848591152] [2024-12-01 23:00:08,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:08,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:00:08,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:08,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:00:08,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:00:08,924 INFO L87 Difference]: Start difference. First operand 273 states and 334 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:09,093 INFO L93 Difference]: Finished difference Result 295 states and 355 transitions. [2024-12-01 23:00:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:00:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-12-01 23:00:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:09,094 INFO L225 Difference]: With dead ends: 295 [2024-12-01 23:00:09,094 INFO L226 Difference]: Without dead ends: 294 [2024-12-01 23:00:09,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:00:09,095 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 101 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:09,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 406 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:00:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-12-01 23:00:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2024-12-01 23:00:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 200 states have (on average 1.425) internal successors, (285), 243 states have internal predecessors, (285), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-01 23:00:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 335 transitions. [2024-12-01 23:00:09,109 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 335 transitions. Word has length 73 [2024-12-01 23:00:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:09,110 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 335 transitions. [2024-12-01 23:00:09,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 335 transitions. [2024-12-01 23:00:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-01 23:00:09,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:09,110 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:09,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 23:00:09,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-01 23:00:09,311 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -931565391, now seen corresponding path program 1 times [2024-12-01 23:00:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492259832] [2024-12-01 23:00:09,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:00:09,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:09,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492259832] [2024-12-01 23:00:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492259832] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:09,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:09,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:00:09,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708218169] [2024-12-01 23:00:09,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:09,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:00:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:09,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:00:09,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:00:09,419 INFO L87 Difference]: Start difference. First operand 274 states and 335 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:09,538 INFO L93 Difference]: Finished difference Result 288 states and 354 transitions. [2024-12-01 23:00:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:00:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-12-01 23:00:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:09,540 INFO L225 Difference]: With dead ends: 288 [2024-12-01 23:00:09,540 INFO L226 Difference]: Without dead ends: 286 [2024-12-01 23:00:09,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:00:09,541 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 40 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:09,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 298 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:00:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-12-01 23:00:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 276. [2024-12-01 23:00:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 202 states have (on average 1.4207920792079207) internal successors, (287), 245 states have internal predecessors, (287), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-01 23:00:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 337 transitions. [2024-12-01 23:00:09,555 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 337 transitions. Word has length 74 [2024-12-01 23:00:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:09,555 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 337 transitions. [2024-12-01 23:00:09,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 337 transitions. [2024-12-01 23:00:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-01 23:00:09,556 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:09,556 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:09,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-01 23:00:09,556 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:09,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1881138669, now seen corresponding path program 1 times [2024-12-01 23:00:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039807512] [2024-12-01 23:00:09,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:00:09,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899125532] [2024-12-01 23:00:09,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:09,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:09,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:09,588 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 23:00:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:09,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-01 23:00:09,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:09,691 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 [2024-12-01 23:00:09,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 23:00:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:00:09,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:00:09,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039807512] [2024-12-01 23:00:09,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:00:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899125532] [2024-12-01 23:00:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899125532] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:09,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:09,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:00:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692798577] [2024-12-01 23:00:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:09,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:00:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:09,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:00:09,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:00:09,935 INFO L87 Difference]: Start difference. First operand 276 states and 337 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:10,182 INFO L93 Difference]: Finished difference Result 292 states and 352 transitions. [2024-12-01 23:00:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:00:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-12-01 23:00:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:10,183 INFO L225 Difference]: With dead ends: 292 [2024-12-01 23:00:10,183 INFO L226 Difference]: Without dead ends: 290 [2024-12-01 23:00:10,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:00:10,183 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 94 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:10,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 402 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 196 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:00:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-12-01 23:00:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2024-12-01 23:00:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 204 states have (on average 1.4166666666666667) internal successors, (289), 247 states have internal predecessors, (289), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-12-01 23:00:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 339 transitions. [2024-12-01 23:00:10,194 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 339 transitions. Word has length 76 [2024-12-01 23:00:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:10,194 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 339 transitions. [2024-12-01 23:00:10,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 339 transitions. [2024-12-01 23:00:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-01 23:00:10,195 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:10,195 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:10,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-01 23:00:10,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:10,395 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:10,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash 865008927, now seen corresponding path program 1 times [2024-12-01 23:00:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010821238] [2024-12-01 23:00:10,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:00:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964524782] [2024-12-01 23:00:10,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:10,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:10,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 23:00:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:10,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-12-01 23:00:10,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:10,542 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 [2024-12-01 23:00:10,545 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 [2024-12-01 23:00:10,712 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 [2024-12-01 23:00:10,741 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 [2024-12-01 23:00:10,871 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 [2024-12-01 23:00:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:00:10,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:00:10,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010821238] [2024-12-01 23:00:10,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:00:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964524782] [2024-12-01 23:00:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964524782] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:00:10,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:00:10,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-12-01 23:00:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589500482] [2024-12-01 23:00:10,982 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-01 23:00:10,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-01 23:00:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:10,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-01 23:00:10,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-12-01 23:00:10,983 INFO L87 Difference]: Start difference. First operand 278 states and 339 transitions. Second operand has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-01 23:00:14,994 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] [2024-12-01 23:00:19,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:23,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:27,621 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] [2024-12-01 23:00:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:27,746 INFO L93 Difference]: Finished difference Result 300 states and 359 transitions. [2024-12-01 23:00:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-01 23:00:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2024-12-01 23:00:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:27,747 INFO L225 Difference]: With dead ends: 300 [2024-12-01 23:00:27,748 INFO L226 Difference]: Without dead ends: 299 [2024-12-01 23:00:27,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2024-12-01 23:00:27,748 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 389 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 41 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:27,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1438 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 805 Invalid, 4 Unknown, 0 Unchecked, 16.5s Time] [2024-12-01 23:00:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-12-01 23:00:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 287. [2024-12-01 23:00:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 211 states have (on average 1.3886255924170616) internal successors, (293), 253 states have internal predecessors, (293), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-01 23:00:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 345 transitions. [2024-12-01 23:00:27,761 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 345 transitions. Word has length 78 [2024-12-01 23:00:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:27,761 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 345 transitions. [2024-12-01 23:00:27,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-01 23:00:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 345 transitions. [2024-12-01 23:00:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-01 23:00:27,762 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:27,762 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:27,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-01 23:00:27,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:27,963 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:27,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 406975349, now seen corresponding path program 1 times [2024-12-01 23:00:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:27,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829858783] [2024-12-01 23:00:27,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:00:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829858783] [2024-12-01 23:00:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829858783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:00:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:00:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289108871] [2024-12-01 23:00:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:28,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:00:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:28,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:00:28,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:00:28,083 INFO L87 Difference]: Start difference. First operand 287 states and 345 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:28,176 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2024-12-01 23:00:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:00:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-12-01 23:00:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:28,177 INFO L225 Difference]: With dead ends: 295 [2024-12-01 23:00:28,177 INFO L226 Difference]: Without dead ends: 293 [2024-12-01 23:00:28,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:00:28,178 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 29 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:28,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 311 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:00:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-12-01 23:00:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2024-12-01 23:00:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 213 states have (on average 1.3849765258215962) internal successors, (295), 255 states have internal predecessors, (295), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-01 23:00:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 347 transitions. [2024-12-01 23:00:28,194 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 347 transitions. Word has length 78 [2024-12-01 23:00:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:28,195 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 347 transitions. [2024-12-01 23:00:28,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:00:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 347 transitions. [2024-12-01 23:00:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-01 23:00:28,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:28,196 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:28,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-01 23:00:28,196 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:28,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1045473022, now seen corresponding path program 1 times [2024-12-01 23:00:28,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:28,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547508202] [2024-12-01 23:00:28,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:28,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:00:28,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009414316] [2024-12-01 23:00:28,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:28,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:28,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:28,221 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:28,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 23:00:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:28,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-12-01 23:00:28,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:28,354 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 [2024-12-01 23:00:28,358 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 [2024-12-01 23:00:28,362 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 [2024-12-01 23:00:28,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-12-01 23:00:28,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-12-01 23:00:29,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:00:29,047 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 22 treesize of output 22 [2024-12-01 23:00:29,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:00:29,109 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 44 treesize of output 36 [2024-12-01 23:00:29,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:00:29,529 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 81 treesize of output 61 [2024-12-01 23:00:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:00:29,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:00:30,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547508202] [2024-12-01 23:00:30,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:00:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009414316] [2024-12-01 23:00:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009414316] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:00:30,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:00:30,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-12-01 23:00:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987414784] [2024-12-01 23:00:30,114 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-01 23:00:30,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-01 23:00:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:30,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-01 23:00:30,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-12-01 23:00:30,114 INFO L87 Difference]: Start difference. First operand 289 states and 347 transitions. Second operand has 23 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-01 23:00:34,127 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] [2024-12-01 23:00:38,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:42,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:46,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:00:52,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-12-01 23:00:57,069 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] [2024-12-01 23:00:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:57,164 INFO L93 Difference]: Finished difference Result 345 states and 378 transitions. [2024-12-01 23:00:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-01 23:00:57,165 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 79 [2024-12-01 23:00:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:57,166 INFO L225 Difference]: With dead ends: 345 [2024-12-01 23:00:57,166 INFO L226 Difference]: Without dead ends: 344 [2024-12-01 23:00:57,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2024-12-01 23:00:57,167 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 325 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 33 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:57,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1873 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1355 Invalid, 6 Unknown, 0 Unchecked, 25.9s Time] [2024-12-01 23:00:57,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-12-01 23:00:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 289. [2024-12-01 23:00:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 213 states have (on average 1.380281690140845) internal successors, (294), 255 states have internal predecessors, (294), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-01 23:00:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2024-12-01 23:00:57,186 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 79 [2024-12-01 23:00:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:57,186 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2024-12-01 23:00:57,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 17 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-01 23:00:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2024-12-01 23:00:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-01 23:00:57,187 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:57,187 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:00:57,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-01 23:00:57,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:57,388 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:00:57,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1950074623, now seen corresponding path program 1 times [2024-12-01 23:00:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:57,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579387019] [2024-12-01 23:00:57,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:57,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:00:57,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579387019] [2024-12-01 23:00:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579387019] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:00:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636487934] [2024-12-01 23:00:57,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:57,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:57,859 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:57,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 23:00:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:57,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-01 23:00:57,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:57,980 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 [2024-12-01 23:00:57,984 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 [2024-12-01 23:00:59,014 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 [2024-12-01 23:00:59,133 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 [2024-12-01 23:00:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:00:59,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:01:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636487934] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:01:00,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:01:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 21 [2024-12-01 23:01:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858550694] [2024-12-01 23:01:00,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:01:00,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-01 23:01:00,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:00,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-01 23:01:00,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2024-12-01 23:01:00,185 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand has 22 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-01 23:01:04,205 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] [2024-12-01 23:01:08,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:12,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:17,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:21,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:01:21,526 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-12-01 23:01:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-01 23:01:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 80 [2024-12-01 23:01:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:01:21,527 INFO L225 Difference]: With dead ends: 346 [2024-12-01 23:01:21,527 INFO L226 Difference]: Without dead ends: 345 [2024-12-01 23:01:21,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2024-12-01 23:01:21,528 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 209 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:01:21,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1846 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1109 Invalid, 5 Unknown, 0 Unchecked, 21.0s Time] [2024-12-01 23:01:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-12-01 23:01:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 289. [2024-12-01 23:01:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 213 states have (on average 1.375586854460094) internal successors, (293), 255 states have internal predecessors, (293), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-01 23:01:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 345 transitions. [2024-12-01 23:01:21,546 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 345 transitions. Word has length 80 [2024-12-01 23:01:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:01:21,546 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 345 transitions. [2024-12-01 23:01:21,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-01 23:01:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 345 transitions. [2024-12-01 23:01:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-01 23:01:21,547 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:01:21,547 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:21,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 23:01:21,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:21,747 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:01:21,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash 261291223, now seen corresponding path program 1 times [2024-12-01 23:01:21,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:21,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709413893] [2024-12-01 23:01:21,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:01:21,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:21,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709413893] [2024-12-01 23:01:21,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709413893] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:01:21,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:01:21,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:01:21,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32463247] [2024-12-01 23:01:21,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:01:21,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:01:21,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:21,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:01:21,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:01:21,884 INFO L87 Difference]: Start difference. First operand 289 states and 345 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:01:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:01:22,081 INFO L93 Difference]: Finished difference Result 295 states and 352 transitions. [2024-12-01 23:01:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:01:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2024-12-01 23:01:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:01:22,082 INFO L225 Difference]: With dead ends: 295 [2024-12-01 23:01:22,082 INFO L226 Difference]: Without dead ends: 293 [2024-12-01 23:01:22,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:01:22,083 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 27 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:01:22,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 381 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:01:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-12-01 23:01:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2024-12-01 23:01:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 216 states have (on average 1.375) internal successors, (297), 258 states have internal predecessors, (297), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-01 23:01:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 349 transitions. [2024-12-01 23:01:22,095 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 349 transitions. Word has length 80 [2024-12-01 23:01:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:01:22,096 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 349 transitions. [2024-12-01 23:01:22,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:01:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 349 transitions. [2024-12-01 23:01:22,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-01 23:01:22,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:01:22,096 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:22,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-01 23:01:22,097 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_29_to_40_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:01:22,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:22,097 INFO L85 PathProgramCache]: Analyzing trace with hash -322771104, now seen corresponding path program 1 times [2024-12-01 23:01:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:22,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563004390] [2024-12-01 23:01:22,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:01:22,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563004390] [2024-12-01 23:01:22,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563004390] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:01:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039480932] [2024-12-01 23:01:22,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:22,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:01:22,478 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:01:22,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-01 23:01:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:22,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-01 23:01:22,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:01:22,612 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 [2024-12-01 23:01:22,616 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 [2024-12-01 23:01:22,627 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 [2024-12-01 23:01:23,171 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 [2024-12-01 23:01:23,300 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 [2024-12-01 23:01:23,395 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 [2024-12-01 23:01:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:01:23,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:01:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:01:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039480932] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:01:23,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:01:23,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 11] total 28 [2024-12-01 23:01:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510175694] [2024-12-01 23:01:23,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:01:23,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-01 23:01:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:23,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-01 23:01:23,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-12-01 23:01:23,835 INFO L87 Difference]: Start difference. First operand 292 states and 349 transitions. Second operand has 29 states, 25 states have (on average 6.04) internal successors, (151), 24 states have internal predecessors, (151), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-12-01 23:01:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:01:24,739 INFO L93 Difference]: Finished difference Result 343 states and 374 transitions. [2024-12-01 23:01:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 23:01:24,739 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.04) internal successors, (151), 24 states have internal predecessors, (151), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 81 [2024-12-01 23:01:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:01:24,740 INFO L225 Difference]: With dead ends: 343 [2024-12-01 23:01:24,740 INFO L226 Difference]: Without dead ends: 342 [2024-12-01 23:01:24,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2024-12-01 23:01:24,741 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 331 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:01:24,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1375 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 23:01:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-12-01 23:01:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 292. [2024-12-01 23:01:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 216 states have (on average 1.3703703703703705) internal successors, (296), 258 states have internal predecessors, (296), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-12-01 23:01:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 348 transitions. [2024-12-01 23:01:24,752 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 348 transitions. Word has length 81 [2024-12-01 23:01:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:01:24,752 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 348 transitions. [2024-12-01 23:01:24,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.04) internal successors, (151), 24 states have internal predecessors, (151), 8 states have call successors, (20), 8 states have call predecessors, (20), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-12-01 23:01:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 348 transitions. [2024-12-01 23:01:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-01 23:01:24,753 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:01:24,754 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:24,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-01 23:01:24,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:24,954 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:01:24,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash -489906526, now seen corresponding path program 1 times [2024-12-01 23:01:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455480327] [2024-12-01 23:01:24,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:24,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:01:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455480327] [2024-12-01 23:01:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455480327] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:01:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:01:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:01:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094830443] [2024-12-01 23:01:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:01:25,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:01:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:25,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:01:25,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:01:25,156 INFO L87 Difference]: Start difference. First operand 292 states and 348 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:01:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:01:25,498 INFO L93 Difference]: Finished difference Result 295 states and 349 transitions. [2024-12-01 23:01:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:01:25,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-12-01 23:01:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:01:25,500 INFO L225 Difference]: With dead ends: 295 [2024-12-01 23:01:25,500 INFO L226 Difference]: Without dead ends: 264 [2024-12-01 23:01:25,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:01:25,500 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 26 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:01:25,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 356 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:01:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-12-01 23:01:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-12-01 23:01:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 191 states have (on average 1.4083769633507854) internal successors, (269), 233 states have internal predecessors, (269), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-01 23:01:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 316 transitions. [2024-12-01 23:01:25,518 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 316 transitions. Word has length 81 [2024-12-01 23:01:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:01:25,518 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 316 transitions. [2024-12-01 23:01:25,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-01 23:01:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 316 transitions. [2024-12-01 23:01:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-01 23:01:25,519 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:01:25,519 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:25,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-01 23:01:25,519 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:01:25,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1415969565, now seen corresponding path program 1 times [2024-12-01 23:01:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814827052] [2024-12-01 23:01:25,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-01 23:01:25,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408954462] [2024-12-01 23:01:25,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:25,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:25,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:01:25,538 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:01:25,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-01 23:01:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:25,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-12-01 23:01:25,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:01:25,660 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 [2024-12-01 23:01:25,662 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 [2024-12-01 23:01:25,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 23:01:26,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 23:01:26,214 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 [2024-12-01 23:01:26,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:01:26,707 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 22 treesize of output 22 [2024-12-01 23:01:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:01:26,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:01:26,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814827052] [2024-12-01 23:01:26,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-01 23:01:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408954462] [2024-12-01 23:01:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408954462] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:01:26,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:01:26,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-12-01 23:01:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887798392] [2024-12-01 23:01:26,918 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-01 23:01:26,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-01 23:01:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:26,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-01 23:01:26,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-12-01 23:01:26,919 INFO L87 Difference]: Start difference. First operand 264 states and 316 transitions. Second operand has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-01 23:01:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:01:28,398 INFO L93 Difference]: Finished difference Result 311 states and 340 transitions. [2024-12-01 23:01:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-01 23:01:28,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 82 [2024-12-01 23:01:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:01:28,400 INFO L225 Difference]: With dead ends: 311 [2024-12-01 23:01:28,400 INFO L226 Difference]: Without dead ends: 310 [2024-12-01 23:01:28,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2024-12-01 23:01:28,400 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 239 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:01:28,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1204 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-01 23:01:28,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-12-01 23:01:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 264. [2024-12-01 23:01:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 191 states have (on average 1.4031413612565444) internal successors, (268), 233 states have internal predecessors, (268), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-01 23:01:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 315 transitions. [2024-12-01 23:01:28,414 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 315 transitions. Word has length 82 [2024-12-01 23:01:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:01:28,415 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 315 transitions. [2024-12-01 23:01:28,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-01 23:01:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 315 transitions. [2024-12-01 23:01:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-01 23:01:28,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:01:28,415 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:28,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-01 23:01:28,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:28,616 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_29_to_40_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:01:28,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -945383486, now seen corresponding path program 1 times [2024-12-01 23:01:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394601091] [2024-12-01 23:01:28,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:01:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394601091] [2024-12-01 23:01:28,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394601091] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:01:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311927846] [2024-12-01 23:01:28,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:28,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:28,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:01:28,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:01:28,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-01 23:01:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:29,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-01 23:01:29,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:01:29,111 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 [2024-12-01 23:01:29,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 23:01:29,752 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 [2024-12-01 23:01:29,916 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 [2024-12-01 23:01:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:01:30,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:01:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311927846] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:01:30,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:01:30,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2024-12-01 23:01:30,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665000974] [2024-12-01 23:01:30,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:01:30,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-01 23:01:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:30,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-01 23:01:30,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-12-01 23:01:30,152 INFO L87 Difference]: Start difference. First operand 264 states and 315 transitions. Second operand has 18 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 5 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 23:01:34,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:38,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:42,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:46,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:50,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:51,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:01:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:01:51,771 INFO L93 Difference]: Finished difference Result 310 states and 339 transitions. [2024-12-01 23:01:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 23:01:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 5 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 83 [2024-12-01 23:01:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:01:51,772 INFO L225 Difference]: With dead ends: 310 [2024-12-01 23:01:51,772 INFO L226 Difference]: Without dead ends: 309 [2024-12-01 23:01:51,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-12-01 23:01:51,773 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 209 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 13 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:01:51,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1293 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 577 Invalid, 6 Unknown, 0 Unchecked, 21.5s Time] [2024-12-01 23:01:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-12-01 23:01:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 264. [2024-12-01 23:01:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 191 states have (on average 1.3979057591623036) internal successors, (267), 233 states have internal predecessors, (267), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-01 23:01:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 314 transitions. [2024-12-01 23:01:51,783 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 314 transitions. Word has length 83 [2024-12-01 23:01:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:01:51,783 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 314 transitions. [2024-12-01 23:01:51,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 5 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 23:01:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 314 transitions. [2024-12-01 23:01:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-01 23:01:51,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:01:51,784 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:01:51,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-01 23:01:51,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:51,984 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:01:51,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:01:51,985 INFO L85 PathProgramCache]: Analyzing trace with hash 757883077, now seen corresponding path program 1 times [2024-12-01 23:01:51,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:01:51,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409368026] [2024-12-01 23:01:51,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:51,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:01:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:01:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:01:52,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409368026] [2024-12-01 23:01:52,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409368026] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:01:52,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14842665] [2024-12-01 23:01:52,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:01:52,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:01:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:01:52,194 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:01:52,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-01 23:01:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:01:52,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-01 23:01:52,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:01:52,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 23:01:52,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-12-01 23:01:52,704 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 [2024-12-01 23:01:52,908 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 [2024-12-01 23:01:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:01:52,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:01:53,177 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 [2024-12-01 23:01:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-01 23:01:53,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14842665] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:01:53,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:01:53,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 12] total 30 [2024-12-01 23:01:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972381874] [2024-12-01 23:01:53,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:01:53,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-01 23:01:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:01:53,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-01 23:01:53,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2024-12-01 23:01:53,452 INFO L87 Difference]: Start difference. First operand 264 states and 314 transitions. Second operand has 31 states, 27 states have (on average 6.2592592592592595) internal successors, (169), 25 states have internal predecessors, (169), 12 states have call successors, (21), 9 states have call predecessors, (21), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-12-01 23:01:57,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:02:01,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:02:06,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:02:10,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 23:02:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:02:10,975 INFO L93 Difference]: Finished difference Result 271 states and 314 transitions. [2024-12-01 23:02:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-01 23:02:10,975 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 6.2592592592592595) internal successors, (169), 25 states have internal predecessors, (169), 12 states have call successors, (21), 9 states have call predecessors, (21), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 84 [2024-12-01 23:02:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:02:10,976 INFO L225 Difference]: With dead ends: 271 [2024-12-01 23:02:10,976 INFO L226 Difference]: Without dead ends: 270 [2024-12-01 23:02:10,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=471, Invalid=2609, Unknown=0, NotChecked=0, Total=3080 [2024-12-01 23:02:10,977 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 736 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 80 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2024-12-01 23:02:10,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1544 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1098 Invalid, 4 Unknown, 0 Unchecked, 16.9s Time] [2024-12-01 23:02:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-12-01 23:02:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 263. [2024-12-01 23:02:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 191 states have (on average 1.382198952879581) internal successors, (264), 232 states have internal predecessors, (264), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-01 23:02:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 311 transitions. [2024-12-01 23:02:10,989 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 311 transitions. Word has length 84 [2024-12-01 23:02:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:02:10,989 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 311 transitions. [2024-12-01 23:02:10,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 6.2592592592592595) internal successors, (169), 25 states have internal predecessors, (169), 12 states have call successors, (21), 9 states have call predecessors, (21), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-12-01 23:02:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 311 transitions. [2024-12-01 23:02:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-01 23:02:10,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:02:10,989 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:02:10,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-01 23:02:11,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-01 23:02:11,190 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_29_to_40_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:02:11,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:02:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2019538980, now seen corresponding path program 1 times [2024-12-01 23:02:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:02:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697743998] [2024-12-01 23:02:11,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:02:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:02:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:02:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:02:11,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:02:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697743998] [2024-12-01 23:02:11,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697743998] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:02:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681010410] [2024-12-01 23:02:11,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:02:11,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:02:11,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:02:11,389 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:02:11,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-01 23:02:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:02:11,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-01 23:02:11,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:02:11,502 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 [2024-12-01 23:02:11,710 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 [2024-12-01 23:02:11,745 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 [2024-12-01 23:02:11,871 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 [2024-12-01 23:02:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:02:11,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:02:12,085 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 23 treesize of output 15 [2024-12-01 23:02:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-01 23:02:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681010410] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:02:12,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:02:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 12] total 30 [2024-12-01 23:02:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157606730] [2024-12-01 23:02:12,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:02:12,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-01 23:02:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:02:12,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-01 23:02:12,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-12-01 23:02:12,302 INFO L87 Difference]: Start difference. First operand 263 states and 311 transitions. Second operand has 31 states, 27 states have (on average 6.333333333333333) internal successors, (171), 25 states have internal predecessors, (171), 12 states have call successors, (21), 9 states have call predecessors, (21), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-12-01 23:02:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:02:13,583 INFO L93 Difference]: Finished difference Result 325 states and 342 transitions. [2024-12-01 23:02:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-01 23:02:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 6.333333333333333) internal successors, (171), 25 states have internal predecessors, (171), 12 states have call successors, (21), 9 states have call predecessors, (21), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 85 [2024-12-01 23:02:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:02:13,585 INFO L225 Difference]: With dead ends: 325 [2024-12-01 23:02:13,585 INFO L226 Difference]: Without dead ends: 324 [2024-12-01 23:02:13,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 142 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=434, Invalid=2428, Unknown=0, NotChecked=0, Total=2862 [2024-12-01 23:02:13,586 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 548 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 23:02:13,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1548 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 23:02:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-12-01 23:02:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 263. [2024-12-01 23:02:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 191 states have (on average 1.3717277486910995) internal successors, (262), 232 states have internal predecessors, (262), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-01 23:02:13,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 309 transitions. [2024-12-01 23:02:13,598 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 309 transitions. Word has length 85 [2024-12-01 23:02:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:02:13,598 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 309 transitions. [2024-12-01 23:02:13,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 6.333333333333333) internal successors, (171), 25 states have internal predecessors, (171), 12 states have call successors, (21), 9 states have call predecessors, (21), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-12-01 23:02:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 309 transitions. [2024-12-01 23:02:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-01 23:02:13,599 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:02:13,599 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:02:13,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-01 23:02:13,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36cc82b0-f881-4b25-b894-77f1de3813db/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-01 23:02:13,799 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_29_to_40_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-12-01 23:02:13,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:02:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1818800985, now seen corresponding path program 1 times [2024-12-01 23:02:13,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:02:13,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818440166] [2024-12-01 23:02:13,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:02:13,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:02:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat