./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79769f30a585389c0c487adad51d510f66c0d5e44d42ecf952985ceac89e1c25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:42,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:42,192 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:33:42,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:42,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:42,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:42,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:42,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:42,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:42,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:42,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:42,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:42,253 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:42,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:42,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:42,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:42,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:42,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:42,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:42,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:42,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:42,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:42,259 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:33:42,260 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:33:42,260 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:42,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:42,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:42,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:42,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:42,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:42,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:42,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:42,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:42,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:42,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:42,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:42,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:42,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:42,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:42,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:42,267 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:42,267 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79769f30a585389c0c487adad51d510f66c0d5e44d42ecf952985ceac89e1c25 [2023-11-19 07:33:42,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:42,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:42,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:42,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:42,602 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:42,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c [2023-11-19 07:33:45,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:45,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:45,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c [2023-11-19 07:33:45,936 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/data/e38c22c78/ecc6330805f24408b9e8f2fa82026c2f/FLAG660a6fada [2023-11-19 07:33:45,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/data/e38c22c78/ecc6330805f24408b9e8f2fa82026c2f [2023-11-19 07:33:45,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:45,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:45,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:45,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:45,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:45,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:45" (1/1) ... [2023-11-19 07:33:45,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75685aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:45, skipping insertion in model container [2023-11-19 07:33:45,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:45" (1/1) ... [2023-11-19 07:33:46,015 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:46,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:46,227 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:46,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:46,281 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:46,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46 WrapperNode [2023-11-19 07:33:46,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:46,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:46,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:46,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:46,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,325 INFO L138 Inliner]: procedures = 16, calls = 56, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-11-19 07:33:46,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:46,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:46,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:46,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:46,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:46,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:46,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:46,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:46,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (1/1) ... [2023-11-19 07:33:46,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:46,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:46,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:46,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:33:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:33:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:33:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:33:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2023-11-19 07:33:46,446 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2023-11-19 07:33:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:46,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:33:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:33:46,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:33:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:33:46,578 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:46,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:47,114 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:47,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:47,130 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:33:47,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:47 BoogieIcfgContainer [2023-11-19 07:33:47,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:47,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:47,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:47,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:47,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:45" (1/3) ... [2023-11-19 07:33:47,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c007c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:47, skipping insertion in model container [2023-11-19 07:33:47,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:46" (2/3) ... [2023-11-19 07:33:47,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c007c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:47, skipping insertion in model container [2023-11-19 07:33:47,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:47" (3/3) ... [2023-11-19 07:33:47,145 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo1-ll.c [2023-11-19 07:33:47,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:47,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-19 07:33:47,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:47,230 INFO L357 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, mHoare=true, 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;@1e31b554, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:47,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-19 07:33:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 07:33:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:33:47,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:47,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:47,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:33:47,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1438940651, now seen corresponding path program 1 times [2023-11-19 07:33:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608991580] [2023-11-19 07:33:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:47,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608991580] [2023-11-19 07:33:47,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:33:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231423599] [2023-11-19 07:33:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:47,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:47,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:47,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:47,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:33:47,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:33:47,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:47,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231423599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:47,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:47,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:47,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093907898] [2023-11-19 07:33:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:47,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:33:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:47,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:33:47,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:33:47,758 INFO L87 Difference]: Start difference. First operand has 79 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:33:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:47,789 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2023-11-19 07:33:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:33:47,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-19 07:33:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:47,799 INFO L225 Difference]: With dead ends: 154 [2023-11-19 07:33:47,799 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 07:33:47,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:33:47,807 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:47,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 07:33:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-19 07:33:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.6) internal successors, (64), 64 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:33:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2023-11-19 07:33:47,851 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 18 [2023-11-19 07:33:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:47,852 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2023-11-19 07:33:47,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:33:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2023-11-19 07:33:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:33:47,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:47,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:47,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:48,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:33:48,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:33:48,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash -381523225, now seen corresponding path program 1 times [2023-11-19 07:33:48,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:48,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991772225] [2023-11-19 07:33:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:48,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:48,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:33:48,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073709428] [2023-11-19 07:33:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:48,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:48,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:48,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:48,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 07:33:48,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:48,330 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-19 07:33:48,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2023-11-19 07:33:48,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-19 07:33:48,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:33:48,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-11-19 07:33:48,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2023-11-19 07:33:48,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-19 07:33:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:48,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:49,096 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#x~0#1.offset| Int) (v_ArrVal_89 (Array Int Int)) (v_ArrVal_87 (Array Int Int)) (|v_func_to_recursive_line_30_to_38_0_#t~mem5_21| Int) (|v_func_to_recursive_line_30_to_38_0_#t~mem4_21| Int)) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset| 1)) |c_ULTIMATE.start_main_~#y~0#1.base| v_ArrVal_89) |c_ULTIMATE.start_main_~#c~0#1.base| v_ArrVal_87))) (or (< 0 (+ (* |v_func_to_recursive_line_30_to_38_0_#t~mem4_21| |v_func_to_recursive_line_30_to_38_0_#t~mem5_21|) 9223372036854775809)) (< |v_func_to_recursive_line_30_to_38_0_#t~mem4_21| (select (select .cse0 |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|)) (< |v_func_to_recursive_line_30_to_38_0_#t~mem5_21| (select (select .cse0 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|))))) is different from false [2023-11-19 07:33:49,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991772225] [2023-11-19 07:33:49,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:33:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073709428] [2023-11-19 07:33:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073709428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:49,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:49,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 07:33:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649175026] [2023-11-19 07:33:49,138 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:33:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:33:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=176, Unknown=1, NotChecked=26, Total=240 [2023-11-19 07:33:49,141 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:33:51,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:33:53,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:33:55,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:33:57,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:00,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:02,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:02,067 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2023-11-19 07:34:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:34:02,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-19 07:34:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:02,071 INFO L225 Difference]: With dead ends: 132 [2023-11-19 07:34:02,071 INFO L226 Difference]: Without dead ends: 131 [2023-11-19 07:34:02,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=385, Unknown=1, NotChecked=40, Total=506 [2023-11-19 07:34:02,077 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 97 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:02,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 408 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 6 Unknown, 0 Unchecked, 12.5s Time] [2023-11-19 07:34:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-19 07:34:02,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 95. [2023-11-19 07:34:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 83 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 07:34:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2023-11-19 07:34:02,116 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 18 [2023-11-19 07:34:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:02,117 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2023-11-19 07:34:02,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:34:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2023-11-19 07:34:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:34:02,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:02,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:02,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:34:02,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:02,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:34:02,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1057681950, now seen corresponding path program 1 times [2023-11-19 07:34:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:02,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416899353] [2023-11-19 07:34:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:02,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:02,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280466817] [2023-11-19 07:34:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:02,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:02,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:02,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:02,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 07:34:02,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:02,625 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-19 07:34:02,641 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-19 07:34:02,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2023-11-19 07:34:02,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:02,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2023-11-19 07:34:02,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-19 07:34:02,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-19 07:34:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:03,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416899353] [2023-11-19 07:34:03,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280466817] [2023-11-19 07:34:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280466817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:03,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:03,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:34:03,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728959626] [2023-11-19 07:34:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:03,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:03,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:03,005 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:34:05,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:07,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:09,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:11,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:13,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:13,446 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2023-11-19 07:34:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-19 07:34:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:13,449 INFO L225 Difference]: With dead ends: 131 [2023-11-19 07:34:13,449 INFO L226 Difference]: Without dead ends: 130 [2023-11-19 07:34:13,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:34:13,451 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 91 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:13,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 301 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 178 Invalid, 5 Unknown, 0 Unchecked, 10.3s Time] [2023-11-19 07:34:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-19 07:34:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 95. [2023-11-19 07:34:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 83 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 07:34:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2023-11-19 07:34:13,473 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 19 [2023-11-19 07:34:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:13,474 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2023-11-19 07:34:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:34:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2023-11-19 07:34:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:34:13,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:13,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:13,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:13,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:13,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:34:13,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1571597879, now seen corresponding path program 1 times [2023-11-19 07:34:13,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:13,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974582939] [2023-11-19 07:34:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:13,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:13,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763085472] [2023-11-19 07:34:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:13,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:13,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:13,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:13,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 07:34:13,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:13,914 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2023-11-19 07:34:13,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 615 treesize of output 603 [2023-11-19 07:34:13,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-19 07:34:13,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:34:14,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-11-19 07:34:14,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-11-19 07:34:14,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-19 07:34:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:34:14,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:14,992 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#y~0#1.offset| Int) (|ULTIMATE.start_main_~#x~0#1.offset| Int) (v_ArrVal_187 Int) (v_ArrVal_189 (Array Int Int))) (let ((.cse1 (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset| 1)))) (store .cse2 |c_ULTIMATE.start_main_~#y~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#y~0#1.base|) |ULTIMATE.start_main_~#y~0#1.offset| v_ArrVal_187))) |c_ULTIMATE.start_main_~#c~0#1.base| v_ArrVal_189))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|))) (< .cse0 (+ (* (select (select .cse1 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|) .cse0) 9223372036854775809))))) is different from false [2023-11-19 07:34:15,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974582939] [2023-11-19 07:34:15,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763085472] [2023-11-19 07:34:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763085472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:15,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:15,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 07:34:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744898070] [2023-11-19 07:34:15,007 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:34:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:34:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=200, Unknown=1, NotChecked=28, Total=272 [2023-11-19 07:34:15,008 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:34:17,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:19,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:21,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:23,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:25,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:25,798 INFO L93 Difference]: Finished difference Result 130 states and 131 transitions. [2023-11-19 07:34:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:34:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-19 07:34:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:25,800 INFO L225 Difference]: With dead ends: 130 [2023-11-19 07:34:25,800 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 07:34:25,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=339, Unknown=1, NotChecked=38, Total=462 [2023-11-19 07:34:25,802 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 136 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:25,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 313 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 257 Invalid, 5 Unknown, 0 Unchecked, 10.5s Time] [2023-11-19 07:34:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 07:34:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 95. [2023-11-19 07:34:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 83 states have internal predecessors, (89), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 07:34:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2023-11-19 07:34:25,817 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 20 [2023-11-19 07:34:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:25,817 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-19 07:34:25,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:34:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2023-11-19 07:34:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:34:25,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:25,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:25,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:26,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:34:26,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1474893952, now seen corresponding path program 1 times [2023-11-19 07:34:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183828837] [2023-11-19 07:34:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:26,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795105999] [2023-11-19 07:34:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:26,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:26,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:26,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:26,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:34:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:26,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:34:26,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:26,197 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:34:26,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 427 treesize of output 415 [2023-11-19 07:34:26,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-11-19 07:34:26,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-19 07:34:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:26,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:26,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183828837] [2023-11-19 07:34:26,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795105999] [2023-11-19 07:34:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795105999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:26,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:26,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:34:26,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864418310] [2023-11-19 07:34:26,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:26,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:34:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:34:26,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:26,459 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:34:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:26,747 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2023-11-19 07:34:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-19 07:34:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:26,749 INFO L225 Difference]: With dead ends: 113 [2023-11-19 07:34:26,749 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:34:26,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:26,751 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 82 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:26,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 289 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:34:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:34:26,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2023-11-19 07:34:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 83 states have internal predecessors, (88), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 07:34:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2023-11-19 07:34:26,775 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 21 [2023-11-19 07:34:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:26,778 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2023-11-19 07:34:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:34:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2023-11-19 07:34:26,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:34:26,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:26,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:26,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:27,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:27,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:34:27,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1522927787, now seen corresponding path program 1 times [2023-11-19 07:34:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:27,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450991976] [2023-11-19 07:34:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:27,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:27,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295352684] [2023-11-19 07:34:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:27,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:27,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:27,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64aebe1-a921-4c6f-95aa-582c72cf7a5b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:34:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:27,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-19 07:34:27,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:27,230 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2023-11-19 07:34:27,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 226 treesize of output 230 [2023-11-19 07:34:27,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-19 07:34:27,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:34:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,909 INFO L349 Elim1Store]: treesize reduction 52, result has 29.7 percent of original size [2023-11-19 07:34:27,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 61 [2023-11-19 07:34:27,946 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2023-11-19 07:34:27,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 67 [2023-11-19 07:34:28,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 19 [2023-11-19 07:34:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:28,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:28,968 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#y~0#1.offset| Int) (|ULTIMATE.start_main_~#x~0#1.offset| Int) (v_ArrVal_286 (Array Int Int))) (let ((.cse0 (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset| 1)))) (store .cse2 |c_ULTIMATE.start_main_~#y~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#y~0#1.base|) |ULTIMATE.start_main_~#y~0#1.offset| (select (select .cse2 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|)))) |c_ULTIMATE.start_main_~#c~0#1.base| v_ArrVal_286))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|))) (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~#y~0#1.base|) |ULTIMATE.start_main_~#y~0#1.offset|) .cse1) (+ 9223372036854775809 (* .cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|))))))) is different from false [2023-11-19 07:34:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:28,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450991976] [2023-11-19 07:34:28,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:28,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295352684] [2023-11-19 07:34:28,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295352684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:28,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:28,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 07:34:28,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657729460] [2023-11-19 07:34:28,989 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:28,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:28,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=322, Unknown=1, NotChecked=36, Total=420 [2023-11-19 07:34:28,993 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:34:31,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:34,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:36,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:38,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:40,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:42,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:44,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:46,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:48,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:34:50,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]