./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-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_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:26:36,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:26:36,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:26:36,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:26:36,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:26:36,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:26:36,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:26:36,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:26:36,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:26:36,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:26:36,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:26:36,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:26:36,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:26:36,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:26:36,259 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:26:36,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:26:36,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:26:36,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:26:36,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:26:36,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:26:36,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:26:36,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:26:36,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:26:36,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:26:36,261 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:26:36,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:26:36,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:26:36,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:26:36,262 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:26:36,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:26:36,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:26:36,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:36,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:36,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:36,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:36,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:26:36,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:36,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:26:36,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:26:36,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:26:36,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:26:36,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:26:36,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:26:36,265 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_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 [2024-11-28 04:26:36,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:26:36,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:26:36,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:26:36,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:26:36,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:26:36,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-11-28 04:26:40,088 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/data/4f487d5ba/0477f18dceec445085fbf3bec0f5b122/FLAG601df8325 [2024-11-28 04:26:40,504 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:26:40,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-11-28 04:26:40,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/data/4f487d5ba/0477f18dceec445085fbf3bec0f5b122/FLAG601df8325 [2024-11-28 04:26:40,542 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/data/4f487d5ba/0477f18dceec445085fbf3bec0f5b122 [2024-11-28 04:26:40,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:26:40,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:26:40,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:40,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:26:40,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:26:40,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:40,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdb7a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40, skipping insertion in model container [2024-11-28 04:26:40,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:40,585 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:26:40,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:40,885 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:26:40,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:40,982 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:26:40,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40 WrapperNode [2024-11-28 04:26:40,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:40,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:40,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:26:40,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:26:40,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,028 INFO L138 Inliner]: procedures = 17, calls = 142, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2024-11-28 04:26:41,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:41,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:26:41,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:26:41,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:26:41,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,091 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 9, 3, 12, 5, 8, 8, 5, 7, 7, 7, 3, 10]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 2, 1, 2]. [2024-11-28 04:26:41,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,114 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:26:41,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:26:41,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:26:41,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:26:41,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (1/1) ... [2024-11-28 04:26:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:41,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:41,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:26:41,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:26:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:26:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:26:41,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:26:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:26:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:26:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:26:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:26:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:26:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:26:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:26:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:26:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:26:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:26:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:26:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:26:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:26:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:26:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:26:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:26:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:26:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 04:26:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 04:26:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 04:26:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2024-11-28 04:26:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2024-11-28 04:26:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2024-11-28 04:26:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2024-11-28 04:26:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:26:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 04:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:26:41,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:26:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:26:41,445 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:26:41,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:26:42,684 INFO L? ?]: Removed 217 outVars from TransFormulas that were not future-live. [2024-11-28 04:26:42,684 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:26:42,707 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:26:42,708 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:26:42,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:42 BoogieIcfgContainer [2024-11-28 04:26:42,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:26:42,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:26:42,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:26:42,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:26:42,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:26:40" (1/3) ... [2024-11-28 04:26:42,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7f78eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:42, skipping insertion in model container [2024-11-28 04:26:42,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:40" (2/3) ... [2024-11-28 04:26:42,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7f78eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:42, skipping insertion in model container [2024-11-28 04:26:42,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:42" (3/3) ... [2024-11-28 04:26:42,722 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2024-11-28 04:26:42,737 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:26:42,739 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd2-ll.c that has 5 procedures, 179 locations, 1 initial locations, 0 loop locations, and 64 error locations. [2024-11-28 04:26:42,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:26:42,853 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;@2c68993d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:26:42,855 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-11-28 04:26:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 96 states have (on average 1.7291666666666667) internal successors, (166), 162 states have internal predecessors, (166), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:26:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:26:42,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:42,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:42,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:26:42,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:42,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1406924726, now seen corresponding path program 1 times [2024-11-28 04:26:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898333732] [2024-11-28 04:26:42,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:42,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:26:43,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898333732] [2024-11-28 04:26:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898333732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203600913] [2024-11-28 04:26:43,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:43,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:43,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:26:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:43,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:26:43,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:26:43,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203600913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:26:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:26:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946829221] [2024-11-28 04:26:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:43,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:26:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:43,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:26:43,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:26:43,525 INFO L87 Difference]: Start difference. First operand has 179 states, 96 states have (on average 1.7291666666666667) internal successors, (166), 162 states have internal predecessors, (166), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:43,591 INFO L93 Difference]: Finished difference Result 354 states and 397 transitions. [2024-11-28 04:26:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:26:43,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-11-28 04:26:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:43,609 INFO L225 Difference]: With dead ends: 354 [2024-11-28 04:26:43,609 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 04:26:43,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:26:43,623 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:43,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 04:26:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-28 04:26:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 91 states have (on average 1.7142857142857142) internal successors, (156), 156 states have internal predecessors, (156), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:26:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2024-11-28 04:26:43,683 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 15 [2024-11-28 04:26:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:43,683 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2024-11-28 04:26:43,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2024-11-28 04:26:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:26:43,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:43,686 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:43,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:43,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:26:43,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:26:43,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2109836346, now seen corresponding path program 1 times [2024-11-28 04:26:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688305812] [2024-11-28 04:26:43,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:26:44,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144171154] [2024-11-28 04:26:44,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:44,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:44,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:44,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:44,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:26:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:44,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:26:44,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:44,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:44,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:26:44,821 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 [2024-11-28 04:26:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:44,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:44,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688305812] [2024-11-28 04:26:44,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:26:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144171154] [2024-11-28 04:26:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144171154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:44,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:26:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289531781] [2024-11-28 04:26:44,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:44,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:26:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:44,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:26:44,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:26:44,882 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:48,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:26:49,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:49,603 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2024-11-28 04:26:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:26:49,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-11-28 04:26:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:49,605 INFO L225 Difference]: With dead ends: 176 [2024-11-28 04:26:49,606 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 04:26:49,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:26:49,611 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 187 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:49,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1203 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 04:26:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 04:26:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-28 04:26:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 158 states have internal predecessors, (158), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:26:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2024-11-28 04:26:49,645 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 15 [2024-11-28 04:26:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:49,646 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 184 transitions. [2024-11-28 04:26:49,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 184 transitions. [2024-11-28 04:26:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:26:49,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:49,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:49,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:49,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:49,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:26:49,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash 980417466, now seen corresponding path program 1 times [2024-11-28 04:26:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544854727] [2024-11-28 04:26:49,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:26:49,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14791404] [2024-11-28 04:26:49,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:49,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:49,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:49,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:26:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:50,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:26:50,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:50,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:26:50,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:26:51,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:26:51,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 55 [2024-11-28 04:26:51,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:26:51,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 52 [2024-11-28 04:26:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:51,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544854727] [2024-11-28 04:26:51,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:26:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14791404] [2024-11-28 04:26:51,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14791404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:51,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:51,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 04:26:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000317870] [2024-11-28 04:26:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:51,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:26:51,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:51,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:26:51,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:26:51,307 INFO L87 Difference]: Start difference. First operand 175 states and 184 transitions. Second operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:55,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:26:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:56,288 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2024-11-28 04:26:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:26:56,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-28 04:26:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:56,292 INFO L225 Difference]: With dead ends: 175 [2024-11-28 04:26:56,292 INFO L226 Difference]: Without dead ends: 174 [2024-11-28 04:26:56,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:26:56,294 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 208 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:56,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 870 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 04:26:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-28 04:26:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-28 04:26:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 157 states have internal predecessors, (157), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:26:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2024-11-28 04:26:56,351 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 16 [2024-11-28 04:26:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:56,352 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2024-11-28 04:26:56,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2024-11-28 04:26:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:26:56,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:56,353 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:56,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:56,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:56,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:26:56,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash 328170556, now seen corresponding path program 1 times [2024-11-28 04:26:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440850215] [2024-11-28 04:26:56,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:26:56,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779797298] [2024-11-28 04:26:56,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:56,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:56,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:56,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:56,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:26:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:56,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:26:56,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:56,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:26:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:26:56,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:56,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:56,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440850215] [2024-11-28 04:26:56,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:26:56,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779797298] [2024-11-28 04:26:56,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779797298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:56,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306449276] [2024-11-28 04:26:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:56,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:56,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:56,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:56,964 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:57,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:57,223 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2024-11-28 04:26:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:26:57,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-28 04:26:57,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:57,226 INFO L225 Difference]: With dead ends: 174 [2024-11-28 04:26:57,227 INFO L226 Difference]: Without dead ends: 173 [2024-11-28 04:26:57,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:26:57,230 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 24 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:57,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 945 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:26:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-28 04:26:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-28 04:26:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 94 states have (on average 1.6595744680851063) internal successors, (156), 156 states have internal predecessors, (156), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:26:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2024-11-28 04:26:57,264 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 17 [2024-11-28 04:26:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:57,264 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2024-11-28 04:26:57,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2024-11-28 04:26:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 04:26:57,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:57,265 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:57,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:57,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:57,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:26:57,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1583352828, now seen corresponding path program 1 times [2024-11-28 04:26:57,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:57,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249160583] [2024-11-28 04:26:57,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:26:57,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857274191] [2024-11-28 04:26:57,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:57,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:57,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:57,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:57,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:26:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:57,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:26:57,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:57,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:26:58,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:26:58,078 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 36 treesize of output 28 [2024-11-28 04:26:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:26:58,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249160583] [2024-11-28 04:26:58,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:26:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857274191] [2024-11-28 04:26:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857274191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:26:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073394031] [2024-11-28 04:26:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:58,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:26:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:58,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:26:58,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:26:58,123 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:58,653 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2024-11-28 04:26:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:26:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-28 04:26:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:58,656 INFO L225 Difference]: With dead ends: 173 [2024-11-28 04:26:58,657 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 04:26:58,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:26:58,659 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 204 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:58,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 731 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:26:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 04:26:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-28 04:26:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 94 states have (on average 1.648936170212766) internal successors, (155), 155 states have internal predecessors, (155), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:26:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2024-11-28 04:26:58,682 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 18 [2024-11-28 04:26:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:58,682 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2024-11-28 04:26:58,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:26:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2024-11-28 04:26:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:26:58,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:58,684 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] [2024-11-28 04:26:58,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:58,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:58,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_45_to_53_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:26:58,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1143096871, now seen corresponding path program 1 times [2024-11-28 04:26:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775524359] [2024-11-28 04:26:58,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:26:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020326616] [2024-11-28 04:26:59,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:59,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:59,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:59,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:26:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:59,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:26:59,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:59,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-28 04:26:59,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:26:59,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:26:59,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:59,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:26:59,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775524359] [2024-11-28 04:27:00,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:27:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020326616] [2024-11-28 04:27:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020326616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:00,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:27:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:27:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545745230] [2024-11-28 04:27:00,286 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:00,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:27:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:00,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:27:00,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:27:00,288 INFO L87 Difference]: Start difference. First operand 172 states and 181 transitions. Second operand has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:27:05,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:09,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:13,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:13,409 INFO L93 Difference]: Finished difference Result 402 states and 421 transitions. [2024-11-28 04:27:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:27:13,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-28 04:27:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:13,417 INFO L225 Difference]: With dead ends: 402 [2024-11-28 04:27:13,417 INFO L226 Difference]: Without dead ends: 401 [2024-11-28 04:27:13,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:27:13,420 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 443 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:13,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1570 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 454 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2024-11-28 04:27:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-28 04:27:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 297. [2024-11-28 04:27:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 203 states have (on average 1.7142857142857142) internal successors, (348), 266 states have internal predecessors, (348), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (26), 23 states have call predecessors, (26), 24 states have call successors, (26) [2024-11-28 04:27:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 398 transitions. [2024-11-28 04:27:13,468 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 398 transitions. Word has length 38 [2024-11-28 04:27:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:13,470 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 398 transitions. [2024-11-28 04:27:13,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:27:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 398 transitions. [2024-11-28 04:27:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:27:13,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:13,472 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] [2024-11-28 04:27:13,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:27:13,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:27:13,673 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:27:13,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1149019582, now seen corresponding path program 1 times [2024-11-28 04:27:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926889092] [2024-11-28 04:27:13,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:27:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926889092] [2024-11-28 04:27:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926889092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595523385] [2024-11-28 04:27:14,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:14,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:14,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:14,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:27:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:14,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:27:14,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:14,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:27:14,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:27:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:27:15,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:27:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595523385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:15,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 24 [2024-11-28 04:27:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17578657] [2024-11-28 04:27:15,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:15,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:27:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:15,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:27:15,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:27:15,907 INFO L87 Difference]: Start difference. First operand 297 states and 398 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 04:27:22,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:26,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:31,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:35,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:39,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:39,051 INFO L93 Difference]: Finished difference Result 363 states and 416 transitions. [2024-11-28 04:27:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:27:39,052 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 38 [2024-11-28 04:27:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:39,055 INFO L225 Difference]: With dead ends: 363 [2024-11-28 04:27:39,055 INFO L226 Difference]: Without dead ends: 330 [2024-11-28 04:27:39,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:27:39,057 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 351 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 45 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:39,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 628 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1408 Invalid, 11 Unknown, 0 Unchecked, 22.6s Time] [2024-11-28 04:27:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-28 04:27:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 289. [2024-11-28 04:27:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 196 states have (on average 1.7040816326530612) internal successors, (334), 258 states have internal predecessors, (334), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-28 04:27:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2024-11-28 04:27:39,110 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 38 [2024-11-28 04:27:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:39,111 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2024-11-28 04:27:39,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 04:27:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2024-11-28 04:27:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:27:39,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:39,112 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] [2024-11-28 04:27:39,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:27:39,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:27:39,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_45_to_53_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:27:39,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1076264557, now seen corresponding path program 1 times [2024-11-28 04:27:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055804047] [2024-11-28 04:27:39,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:27:39,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938058180] [2024-11-28 04:27:39,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:39,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:39,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:39,402 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:39,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:27:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:39,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 04:27:39,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:39,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-28 04:27:39,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:27:39,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:27:39,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:27:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:27:39,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:40,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055804047] [2024-11-28 04:27:40,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:27:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938058180] [2024-11-28 04:27:40,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938058180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:40,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:27:40,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-28 04:27:40,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14914290] [2024-11-28 04:27:40,540 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:40,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:27:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:40,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:27:40,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:27:40,542 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:27:45,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:49,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:53,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:27:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:53,549 INFO L93 Difference]: Finished difference Result 374 states and 392 transitions. [2024-11-28 04:27:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:27:53,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-28 04:27:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:53,554 INFO L225 Difference]: With dead ends: 374 [2024-11-28 04:27:53,555 INFO L226 Difference]: Without dead ends: 373 [2024-11-28 04:27:53,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:27:53,556 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 305 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:53,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1621 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 453 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2024-11-28 04:27:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-28 04:27:53,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 289. [2024-11-28 04:27:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 196 states have (on average 1.6989795918367347) internal successors, (333), 258 states have internal predecessors, (333), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-28 04:27:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 381 transitions. [2024-11-28 04:27:53,583 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 381 transitions. Word has length 39 [2024-11-28 04:27:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:53,584 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 381 transitions. [2024-11-28 04:27:53,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:27:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 381 transitions. [2024-11-28 04:27:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:27:53,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:53,585 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] [2024-11-28 04:27:53,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:27:53,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75cf5ce-74b2-462e-869c-f33c6e9caada/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:53,786 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_45_to_53_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-11-28 04:27:53,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash 995537179, now seen corresponding path program 1 times [2024-11-28 04:27:53,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537892868] [2024-11-28 04:27:53,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat